Validating what's sent

[larrywal]

So I've got my Mega sending out just fireplace.on as a test. I encapsulated a box with tin foil; and I put my receiver in it (it's driven from an Uno).

I'm trying to figure out a good way to validate that it's working. The Mega sending out fireplace.on is not starting the fireplace. I even soldered an antennae on, so it's not that - my basic RF transmit programs using RadioHead are working fine.

So either my fireplace's RF codes are different, or I'm doing something wrong.

If I run your test RF programs and have the receiver on an Uno in the foil box, what should I see? If I run your test receiver on the Uno and fireplace.on from the mega and have both in the foil box, what would you expect to see?

Tomorrow I'm ordering an SDF and will try to use audacity to reverse engineer things better.

[milksteakmatt]

The mega should be on the receiving end. Reason being, the message is so big, you'll run out of memory before you record it all. What's the model number of your remote?

[milksteakmatt]

I'll send you an example of what the message looks like.

[milksteakmatt]

Here's what the values from a single message should look like. These are repeated 10 times for each button press. An explanation of the values is in the header file.

875 425 375 425 875 425 375 1250 375 700 875 700 875 700 375 700 375 700 375 700 375 700 875 1525 375 700 875 700 375 700 375 700 875 700 875 700 875 700 375 1525 375 700 375 700 875 700 875 700 375 700 375 700 875 700 875 1525 375 700 875 700 375 700 375 700 375 700 375 700 375 700 875 1525 375 700 875 700 875 700 875 700 875 700 375 700 375 700 375 1525 875 700 375 700 375 700 375 700 375 700 875 700 875 700 875 92350

[milksteakmatt]

This explains how the signal works to transmit the data: https://en.m.wikipedia.org/wiki/Frequency-shift_keying

[larrywal]

Thanks so much Matt - really appreciate the help. Your message makes sense from what I read of the code.

I put the Mega on the receiving end and changed MAX to 800. Mega has pin 2 as receiving data pin. Uno has pin 3 as sending data pin.

Below is a snapshot of the output of RF_tester, with the transmitter just running fireplace.on(); in the loop. I also ran with the transmitter unplugged and the receiver in my 3-sided tinfoil box. Those results are below as well (not what I would've expected). Note - I also tried commenting out the if(printed + 1 < changes) just to make a constant receiver....I think that didn't work though because variables probably overflow....

Receiver 433MHz setup 0 1 40 1 0 37260 2 1 280 3 0 1520 4 1 444 5 0 640 6 1 180 7 0 108 8 1 60 9 0 384 10 1 20 11 0 184 12 1 80 13 0 9104 14 1 48 15 0 984 16 1 52 17 0 1044 18 1 56 19 0 364 20 1 184 21 0 1488 22 1 36 23 0 768 24 1 40 25 0 9924 26 1 20 27 0 324 28 1 172 29 0 404 30 1 256 31 0 248 32 1 196 33 0 84 34 1 56 35 0 116 36 1 376 37 0 1588 38 1 240 39 0 92 40 1 460 41 0 252 42 1 48 43 0 484 44 1 788 45 0 384 46 1 96 47 0 84 48 1 432 49 0 736 50 1 320 51 0 204 52 1 40 53 0 1536 54 1 16 55 0 2060 56 1 28 57 0 2844 58 1 140 59 0 472 60 1 44 61 0 132 62 1 72 63 0 220 64 1 108 65 0 300 66 1 64 67 0 1088 68 1 256 69 0 132 70 1 3160 71 0 140 72 1 320 73 0 300 74 1 280 75 0 204 76 1 500 77 0 96 78 1 132 79 0 560 80 1 56 81 0 184 82 1 180 83 0 2408 84 1 256 85 0 1052 86 1 300 87 0 476 88 1 52 89 0 2324 90 1 128 91 0 840 92 1 120 93 0 2352 94 1 720 95 0 872 96 1 84 97 0 748 98 1 40 99 0 144 100 1 144 101 0 644 102 1 3292 103 0 568 104 1 160 105 0 564 106 1 2516 107 0 108 108 1 96 109 0 420 110 1 80 111 0 200 112 1 172 113 0 1276 114 1 240 115 0 112 116 1 284 117 0 44 118 1 200 119 0 812 120 1 156 121 0 400 122 1 28 123 0 632 124 1 28 125 0 340 126 1 6584 127 0 404 128 1 1320 129 0 136 130 1 212 131 0 80 132 1 856 133 0 156 134 1 1940 135 0 88 136 1 284 137 0 1328 138 1 160 139 0 188 140 1 804 141 0 248 142 1 744 143 0 300 144 1 128 145 0 128 146 1 140 147 0 1288 148 1 3064 149 0 460 150 1 48 151 0 904 152 1 1592 153 0 1364 154 1 60 155 0 184 156 1 16 157 0 52 158 1 3440 159 0 1404 160 1 76 161 0 108 162 1 244 163 0 240 164 1 740 165 0 940 166 1 32 167 0 264 168 1 784 169 0 184 170 1 1840 171 0 168 172 1 4784 173 0 384 174 1 2364 175 0 28 176 1 376 177 0 104 178 1 768 179 0 40 180 1 20 181 0 56 182 1 716 183 1 16 184 1 32 185 0 1500 186 1 72 187 0 244 188 1 40 189 0 96 190 1 68 191 0 24 192 1 816 193 0 20 194 1 284 195 0 108 196 1 1824 197 0 328 198 1 316 199 0 1032 200 1 5388 201 0 1272 202 1 1636 203 0 252 204 1 1388 205 0 876 206 1 4972 207 0 804 208 1 6740 209 0 64 210 1 1332 211 0 376 212 1 1540 213 0 832 214 1 796 215 0 184 216 1 2896 217 0 36 218 1 2488 219 0 1020 220 1 3408 221 0 276 222 1 4660 223 0 972 224 1 36 225 0 116 226 1 1888 227 0 292 228 1 56 229 0 980 230 1 664 231 0 152 232 1 6904 233 0 1352 234 1 768 235 0 20 236 1 84 237 0 16 238 1 164 239 0 24 240 1 512 241 0 176 242 1 984 243 0 1668 244 1 1192 245 0 16 246 1 20 247 0 88 248 1 824 249 0 256 250 1 824 251 0 100 252 1 4168 253 0 52 254 1 212 255 0 1928 256 1 568 257 0 1416 258 1 472 259 0 704 260 1 1460 261 0 340 262 1 60 263 0 32 264 1 52 265 0 244 266 1 500 267 0 944 268 1 664 269 0 632 270 1 4384 271 0 164 272 1 4852 273 0 1624 274 1 1488 275 0 332 276 1 220 277 0 184 278 1 120 279 0 52 280 1 960 281 0 1304 282 1 668 283 0 76 284 1 7204 285 0 100 286 1 296 287 0 1232 288 1 1072 289 0 1604 290 1 572 291 0 416 292 1 36 293 0 232 294 1 136 295 0 96 296 1 1648 297 0 1152 298 1 228 299 0 144 300 1 712 301 0 580 302 1 5460 303 0 796 304 1 464 305 0 232 306 1 80 307 0 876 308 1 60 309 0 864 310 1 388 311 0 10108 312 1 5064 313 0 280 314 1 388 315 0 2076 316 1 24 317 0 168 318 1 3204 319 0 1512 320 1 2676 321 0 112 322 1 3132 323 0 728 324 1 3736 325 0 340 326 1 3596 327 0 176 328 1 676 329 0 888 330 1 232 331 0 536 332 1 2492 333 0 124 334 1 2472 335 0 428 336 1 124 337 0 116 338 1 3728 339 0 172 340 1 120 341 0 300 342 1 308 343 0 1812 344 1 2796 345 0 1236 346 1 208 347 0 164 348 1 856 349 0 116 350 1 112 351 0 332 352 1 312 353 0 392 354 1 7196 355 0 18424 356 1 100 357 0 1712 358 1 244 359 0 152 360 1 708 361 0 92 362 1 988 363 0 1252 364 1 64 365 0 216 366 1 480 367 0 400 368 1 1388 369 0 392 370 1 96 371 0 96 372 1 3732 373 0 204 374 1 544 375 1 16 376 1 444 377 0 356 378 1 64 379 0 92 380 1 136 381 0 400 382 1 1084 383 0 176 384 1 28 385 0 116 386 1 236 387 0 564 388 1 28 389 0 104 390 1 80 391 0 192 392 1 48 393 0 688 394 1 1196 395 0 584 396 1 560 397 0 176 398 1 60 399 0 172 400 1 156 401 0 2644 402 1 44 403 0 224 404 1 472 405 0 168 406 1 812 407 0 972 408 1 44 409 0 1940 410 1 1368 411 0 324 412 1 364 413 0 364 414 1 1688 415 0 684 416 1 688 417 0 64 418 1 92 419 0 196 420 1 108 421 0 2064 422 1 28 423 0 168 424 1 240 425 0 84 426 1 28 427 0 332 428 1 44 429 0 3408 430 1 240 431 0 96 432 1 3872 433 0 108 434 1 112 435 0 808 436 1 100 437 0 228 438 1 304 439 0 376 440 1 192 441 0 364 442 1 1964 443 0 300 444 1 440 445 0 344 446 1 2892 447 0 2472 448 1 656 449 0 116 450 1 1732 451 0 144 452 1 820 453 0 176 454 1 6896 455 0 236 456 1 2400 457 0 3052 458 1 244 459 0 636 460 1 9504 461 0 120 462 1 5104 463 0 2456 464 1 128 465 0 408 466 1 3016 467 0 120 468 1 5696 469 0 1256 470 1 3224 471 0 2100 472 1 312 473 0 120 474 1 140 475 0 484 476 1 9196 477 0 552 478 1 60 479 0 1524 480 1 2516 481 0 1168 482 1 3096 483 0 104 484 1 7924 485 0 1952 486 1 2048 487 0 88 488 1 260 489 0 2256 490 1 312 491 0 56 492 1 1300 493 0 232 494 1 576 495 0 620 496 1 5216 497 0 160 498 1 152 499 0 412 500 1 92 501 0 108 502 1 36 503 0 272 504 1 4864 505 0 1188 506 1 7260 507 0 996 508 1 2456 509 0 304 510 1 4460 511 0 836 512 1 356 513 0 152 514 1 92 515 0 136 516 1 252 517 0 1016 518 1 60 519 0 812 520 1 348 521 0 24 522 1 68 523 0 204 524 1 2828 525 0 148 526 1 2828 527 0 180 528 1 848 529 0 2256 530 1 724 531 0 20 532 1 2280 533 0 52 534 1 140 535 0 1228 536 1 268 537 0 104 538 1 5396 539 0 532 540 1 104 541 0 92 542 1 2792 543 0 116 544 1 900 545 0 304 546 1 4880 547 0 1028 548 1 1048 549 0 76 550 1 288 551 0 988 552 1 112 553 0 680 554 1 412 555 0 164 556 1 156 557 0 496 558 1 6284 559 0 1668 560 1 356 561 0 116 562 1 1956 563 0 108 564 1 676 565 0 900 566 1 256 567 0 68 568 1 2892 569 0 132 570 1 2368 571 0 236 572 1 248 573 0 160 574 1 3912 575 0 240 576 1 4660 577 0 160 578 1 464 579 0 864 580 1 520 581 0 152 582 1 860 583 0 132 584 1 1000 585 0 1968 586 1 56 587 0 736 588 1 56 589 0 180 590 1 552 591 0 112 592 1 232 593 0 92 594 1 56 595 0 92 596 1 1728 597 0 108 598 1 1888 599 0 456 600 1 2508 601 0 356 602 1 704 603 0 44 604 1 1136 605 0 1240 606 1 156 607 0 148 608 1 1224 609 0 144 610 1 856 611 0 276 612 1 1772 613 0 92 614 1 1864 615 0 264 616 1 836 617 0 1192 618 1 1692 619 0 1352 620 1 1636 621 0 164 622 1 116 623 0 116 624 1 16 625 0 3156 626 1 812 627 0 124 628 1 516 629 0 132 630 1 2524 631 0 2072 632 1 3232 633 0 192 634 1 808 635 0 540 636 1 1904 637 0 748 638 1 820 639 0 212 640 1 404 641 0 1888 642 1 256 643 0 116 644 1 3564 645 0 224 646 1 196 647 0 184 648 1 3928 649 0 336 650 1 708 651 0 1324 652 1 72 653 0 40 654 1 504 655 0 184 656 1 268 657 0 368 658 1 52 659 0 388 660 1 748 661 0 188 662 1 492 663 0 180 664 1 452 665 0 2244 666 1 432 667 0 300 668 1 112 669 0 108 670 1 520 671 0 172 672 1 1224 673 0 324 674 1 208 675 0 268 676 1 164 677 0 172 678 1 224 679 0 920 680 1 140 681 0 1268 682 1 1240 683 0 124 684 1 1504 685 0 544 686 1 456 687 0 172 688 1 252 689 0 1388 690 1 188 691 0 1388 692 1 32 693 0 96 694 1 196 695 0 164 696 1 76 697 0 1340 698 1 392 699 0 88 700 1 180 701 0 260 702 1 1784 703 0 188 704 1 256 705 0 256 706 1 332 707 0 112 708 1 3852 709 0 156 710 1 2852 711 0 728 712 1 108 713 0 324 714 1 764 715 0 204 716 1 156 717 0 168 718 1 112 719 0 292 720 1 924 721 0 116 722 1 44 723 0 504 724 1 40 725 0 180 726 1 60 727 0 2036 728 1 176 729 0 196 730 1 492 731 0 20 732 1 804 733 0 712 734 1 2824 735 0 368 736 1 264 737 0 960 738 1 128 739 0 756 740 1 316 741 0 88 742 1 1072 743 0 1500 744 1 24 745 0 64 746 1 428 747 0 160 748 1 112 749 0 240 750 1 464 751 0 192 752 1 852 753 0 108 754 1 368 755 0 16 756 1 444 757 0 2900 758 1 88 759 0 236 760 1 268 761 0 496 762 1 24 763 0 356 764 1 6920 765 0 2040 766 1 344 767 0 192 768 1 2512 769 0 48 770 1 228 771 0 64 772 1 224 773 0 1308 774 1 212 775 0 212 776 1 316 777 0 104 778 1 60 779 0 100 780 1 76 781 0 972 782 1 1692 783 0 224 784 1 3772 785 0 10724 786 1 260 787 0 2572 788 1 528 789 0 104 790 1 928 791 0 684 792 1 160 793 0 528 794 1 232 795 0 140 796 1 52 797 0 264 798 1 36

PARTIAL RESULTS WITH TRANSMITTER UNPLUGGED AND RECEIVER IN BOX eceiver 433MHz setup 0 1 72 1 0 1420 2 1 364 3 0 112 4 1 300 5 0 176 6 1 760 7 0 156 8 1 692 9 0 2492 10 1 116 11 0 1932 12 1 280 13 0 220 14 1 84 15 0 440 16 1 336 17 0 5612 18 1 100 19 0 148 20 1 148 21 0 128 22 1 80 23 0 1460 24 1 44 25 0 152 26 1 84 27 0 60 28 1 196 29 0 240 30 1 812 31 0 164 32 1 2932 33 0 176 34 1 1768 35 0 408 36 1 116 37 0 72 38 1 380 39 0 72 40 1 968 41 0 100 42 1 16 43 0 80 44 1 680 45 0 1664 46 1 32 47 0 208 48 1 36 49 0 428 50 1 72 51 0 1116 52 1 228 53 0 184 54 1 56 55 0 616 56 1 44 57 0 864 58 1 60 59 0 72 60 1 252 61 0 312 62 1 520 63 0 92 64 1 176 65 0 60 66 1 3944 67 0 292 68 1 2796 69 0 1236 70 1 348 71 0 104 72 1 84 73 0 188 74 1 240 75 0 92 76 1 388 77 0 1772 78 1 72 79 0 192 80 1 68 81 0 408 82 1 24 83 0 256 84 1 40 85 0 4672 86 1 428 87 0 48 88 1 80 89 0 448 90 1 676 91 0 232 92 1 1744 93 0 3984 94 1 48 95 0 204 96 1 1240 97 0 1264 98 1 24 99 0 156 100 1 64 101 0 224 102 1 108 103 0 96 104 1 180 105 0 152 106 1 148 107 0 1328 108 1 300 109 0 132 110 1 64 111 0 236 112 1 32 113 0 288 114 1 116 115 0 48 116 1 408 117 0 296 118 1 92 119 0 48 120 1 564 121 0 68 122 1 7248 123 0 168 124 1 2720 125 0 140 126 1 52 127 0 1260 128 1 40 129 0 272 130 1 112 131 0 504 132 1 160 133 0 172 134 1 208 135 0 328 136 1 208 137 0 140 138 1 28 139 0 216 140 1 120 141 0 164 142 1 180 143 0 52 144 1 56 145 0 100 146 1 280 147 0 88 148 1 44 149 0 1780 150 1 208 151 0 452 152 1 232 153 0 500 154 1 72 155 0 160 156 1 5660 157 0 1392 158 1 1460 159 0 980 160 1 72 161 0 1216 162 1 796 163 0 192 164 1 732 165 0 120 166 1 456 167 0 100 168 1 476 169 0 76 170 1 152 171 0 236 172 1 2520 173 0 136 174 1 5884 175 0 208 176 1 760 177 0 72 178 1 412 179 0 76 180 1 136 181 0 300 182 1 508 183 0 1340 184 1 44 185 0 568 186 1 44 187 0 216 188 1 32 189 0 512 190 1 60 191 0 212 192 1 92 193 0 136 194 1 44 195 0 224 196 1 48 197 0 144 198 1 48 199 0 240 200 1 268 201 0 420 202 1 64 203 0 140 204 1 284 205 0 80 206 1 96 207 0 652 208 1 172 209 0 1008 210 1 1304 211 0 80 212 1 4888 213 0 700 214 1 148 215 0 708 216 1 1708 217 0 960 218 1 260 219 0 60 220 1 108 221 0 152 222 1 660 223 0 140 224 1 144 225 0 16 226 1 176 227 0 124 228 1 80 229 0 84 230 1 244 231 0 84 232 1 360 233 0 1452 234 1 156 235 0 128 236 1 164 237 0 212 238 1 172 239 0 64 240 1 1740 241 0 92 242 1 848 243 0 236 244 1 232 245 0 180 246 1 4396 247 0 240 248 1 428 249 0 68 250 1 264 251 0 244 252 1 556 253 0 40 254 1 24 255 0 452 256 1 356 257 0 1940 258 1 52 259 0 116 260 1 56 261 0 508 262 1 56 263 0 84 264 1 48 265 0 180 266 1 104 267 0 284 268 1 244 269 0 108 270 1 48 271 0 64 272 1 28 273 0 68 274 1 60 275 0 76 276 1 20 277 0 240 278 1 908 279 0 148 280 1 800 281 0 560 282 1 108 283 0 1048 284 1 324 285 0 160 286 1 4448 287 0 280 288 1 44 289 0 216 290 1 820 291 0 340 292 1 2336 293 0 1532 294 1 32 295 0 116 296 1 268 297 0 56 298 1 116 299 0 36 300 1 180 301 0 32 302 1 36 303 0 108 304 1 452 305 0 172 306 1 72 307 0 160 308 1 84 309 0 324 310 1 56 311 0 356 312 1 76 313 0 268 314 1 604 315 0 80 316 1 416 317 0 44 318 1 5652 319 0 132 320 1 2932 321 0 1108 322 1 1156 323 0 1436 324 1 88 325 0 44 326 1 32 327 0 296 328 1 88 329 0 88 330 1 292 331 0 136 332 1 88 333 0 180 334 1 1028 335 0 96 336 1 736 337 0 272 338 1 716 339 0 252 340 1 1764 341 0 2644 342 1 1384 343 0 84 344 1 1876 345 0 432 346 1 604 347 0 128 348 1 1884

[larrywal]

Also - the fireplace is model RC300. FCC ID: ULE-RC300

[larrywal]

It's so weird that with your RF_Tester file I seem to get the same values whether or not the first board is transmitting. Maybe I have an older version of your files, since I needed to rename the const start (in the .h file) to make it compile, and because you have constants defined as XX = 880 and OO = 380 (vs. 875 and 375 you have in your example values listed on what I should be receiving).

[milksteakmatt]

The values are timings and since a lot can happen to an RF signal between TX and RX, they won't be exact but should be within an acceptable range. If transmitting 880, you might see it received as 892 or 876, for example. Timing can also be affected by your code. Try using the receiver test code and press a button on your remote to see what you get.

[milksteakmatt]

I also wouldn't put either transmitter or receiver in a foil box. You could be getting signal scattering or multipathing. RF interference should be minimal in your house. Minimal enough to see it happen.

[larrywal]

Thanks Matt - the first group of numbers I sent above was from me pushing the reset button on both transmitter and receiver at the same time, not in the box....

[larrywal]

Oh I get it. You mean the actual remote. OK will do that later today and tomorrow. Thanks again, appreciate the support.

Only weird thing I can't explain is when I put just the receiver in the foil box it still returns a bunch of data. On Thu, Sep 27, 2018 at 6:12 AM milksteakmatt notifications@github.com wrote:

I also wouldn't put either transmitter or receiver in a foil box. You could be getting signal scattering or multipathing. RF interference should be minimal in your house. Minimal enough to see it happen.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/milksteakmatt/Ardufuego/issues/3#issuecomment-425085373, or mute the thread https://github.com/notifications/unsubscribe-auth/ApcV8bw_YZ2SGkgKGFjTijvmHPbLbhQpks5ufM6rgaJpZM4W7fBk .

[larrywal]

Ok - did a test with the fireplace's remote - pressed reset and then turned the fireplace on. Got this:

Receiver 433MHz setup 0 1 876 1 0 700 2 1 876 3 0 796 4 1 624 5 0 952 6 1 52 7 0 468 8 1 248 9 0 84564 10 1 196 11 0 76 12 1 168 13 0 336 14 1 36 15 0 5600 16 1 148 17 0 888 18 1 888 19 0 404 20 1 372 21 0 448 22 1 856 23 0 444 24 1 360 25 0 1260 26 1 868 27 0 712 28 1 348 29 0 732 30 1 348 31 0 700 32 1 372 33 0 696 34 1 852 35 0 760 36 1 40 37 0 160 38 1 240 39 0 100 40 1 276 41 0 776 42 1 324 43 0 684 44 1 960 45 0 1300 46 1 24 47 0 76 48 1 744 49 0 332 50 1 1436 51 0 136 52 1 1064 53 0 516 54 1 1032 55 0 540 56 1 928 57 0 684 58 1 408 59 0 640 60 1 1136 61 0 416 62 1 428 63 0 1468 64 1 820 65 0 188 66 1 716 67 0 264 68 1 1076 69 0 648 70 1 956 71 0 644 72 1 364 73 0 696 74 1 400 75 0 700 76 1 880 77 0 648 78 1 912 79 0 1516 80 1 388 81 0 648 82 1 416 83 0 636 84 1 436 85 0 636 86 1 472 87 0 624 88 1 388 89 0 680 90 1 388 91 0 712 92 1 328 93 0 788 94 1 832 95 0 1468 96 1 952 97 0 612 98 1 440 99 0 624 100 1 444 101 0 620 102 1 928 103 0 664 104 1 392 105 0 692 106 1 388 107 0 680 108 1 412 109 0 632 110 1 440 111 0 1432 112 1 392 113 0 692 114 1 948 115 0 608 116 1 992 117 0 600 118 1 396 119 0 684 120 1 896 121 0 660 122 1 920 123 0 692 124 1 888 125 0 656 126 1 932 127 0 38416 128 1 632 129 0 2292 130 1 52 131 0 1440 132 1 364 133 0 236 134 1 688 135 0 508 136 1 52 137 0 4008 138 1 160 139 0 180 140 1 32 141 0 288 142 1 220 143 0 152 144 1 1424 145 0 412 146 1 1528 147 0 164 148 1 2652 149 0 928 150 1 1616 151 0 420 152 1 248 153 0 412 154 1 84 155 0 420 156 1 1116 157 0 140 158 1 1020 159 0 432 160 1 872 161 0 164 162 1 1328 163 0 112 164 1 876 165 0 156 166 1 1896 167 0 880 168 1 60 169 0 708 170 1 1360 171 0 204 172 1 104 173 0 812 174 1 296 175 0 932 176 1 1804 177 0 376 178 1 268 179 0 192 180 1 1856 181 0 396 182 1 696 183 0 2540 184 1 1468 185 0 100 186 1 884 187 0 400 188 1 604 189 0 112 190 1 852 191 0 196 192 1 2984 193 0 852 194 1 1096 195 0 228 196 1 1436 197 0 396 198 1 1796 199 0 276 200 1 536 201 0 320 202 1 188 203 0 200 204 1 216 205 0 160 206 1 1124 207 0 480 208 1 500 209 0 232 210 1 160 211 0 160 212 1 456 213 0 620 214 1 448 215 0 644 216 1 896 217 0 668 218 1 924 219 0 700 220 1 488 221 0 176 222 1 16 223 0 144 224 1 72 225 0 132 226 1 888 227 0 1096 228 1 40 229 0 344 230 1 480 231 0 280 232 1 44 233 0 68 234 1 72 235 0 132 236 1 944 237 0 632 238 1 916 239 0 664 240 1 924 241 0 656 242 1 664 243 0 188 244 1 32 245 0 968 246 1 104 247 0 708 248 1 892 249 0 700 250 1 356 251 0 1520 252 1 368 253 0 688 254 1 396 255 0 660 256 1 896 257 0 676 258 1 972 259 0 592 260 1 436 261 0 632 262 1 468 263 0 604 264 1 908 265 0 704 266 1 868 267 0 1492 268 1 408 269 0 656 270 1 436 271 0 632 272 1 400 273 0 712 274 1 348 275 0 708 276 1 392 277 0 644 278 1 420 279 0 652 280 1 440 281 0 636 282 1 888 283 0 1488 284 1 956 285 0 628 286 1 452 287 0 608 288 1 452 289 0 616 290 1 908 291 0 676 292 1 408 293 0 664 294 1 412 295 0 656 296 1 384 297 0 896 298 1 104 299 0 1608 300 1 340 301 0 672 302 1 924 303 0 656 304 1 956 305 0 660 306 1 344 307 0 680 308 1 936 309 0 640 310 1 944 311 0 636 312 1 924 313 0 668 314 1 912 315 0 28720 316 1 104 317 0 13328 318 1 20 319 0 188 320 1 332 321 0 3660 322 1 216 323 0 20 324 1 28 325 0 116 326 1 104 327 0 532 328 1 104 329 0 416 330 1 40 331 0 888 332 1 84 333 0 628 334 1 40 335 0 11200 336 1 220 337 0 168 338 1 560 339 0 152 340 1 1152 341 0 932 342 1 20 343 0 308 344 1 184 345 0 320 346 1 336 347 0 32 348 1 36 349 0 140 350 1 216 351 0 10088 352 1 116 353 0 252 354 1 292 355 0 1676 356 1 132 357 0 1124 358 1 704 359 0 324 360 1 612 361 0 168 362 1 624 363 0 180 364 1 444 365 0 196 366 1 184 367 0 172 368 1 120 369 0 1344 370 1 188 371 0 220 372 1 240 373 0 1348 374 1 68 375 0 236 376 1 28 377 0 232 378 1 92 379 0 168 380 1 288 381 0 124 382 1 164 383 0 928 384 1 100 385 0 1072 386 1 84 387 0 292 388 1 28 389 0 80 390 1 668 391 0 632 392 1 92 393 0 2664 394 1 3008 395 0 372 396 1 520 397 0 200 398 1 124 399 0 136 400 1 108 401 0 120 402 1 48 403 0 376 404 1 988 405 0 584 406 1 412 407 0 664 408 1 488 409 0 580 410 1 512 411 0 552 412 1 924 413 0 660 414 1 912 415 0 652 416 1 532 417 0 540 418 1 1180 419 0 1228 420 1 432 421 0 608 422 1 988 423 0 600 424 1 928 425 0 644 426 1 948 427 0 628 428 1 948 429 0 640 430 1 444 431 0 632 432 1 916 433 0 648 434 1 412 435 0 1496 436 1 356 437 0 716 438 1 396 439 0 636 440 1 956 441 0 632 442 1 484 443 0 252 444 1 144 445 0 824 446 1 276 447 0 692 448 1 436 449 0 632 450 1 892 451 0 648 452 1 924 453 0 1472 454 1 388 455 0 704 456 1 364 457 0 712 458 1 360 459 0 700 460 1 384 461 0 672 462 1 392 463 0 684 464 1 384 465 0 692 466 1 360 467 0 680 468 1 916 469 0 1500 470 1 896 471 0 648 472 1 416 473 0 652 474 1 432 475 0 628 476 1 936 477 0 692 478 1 328 479 0 728 480 1 368 481 0 700 482 1 376 483 0 672 484 1 400 485 0 1476 486 1 384 487 0 696 488 1 884 489 0 688 490 1 872 491 0 712 492 1 368 493 0 708 494 1 860 495 0 760 496 1 588 497 0 136 498 1 88 499 0 912 500 1 676 501 0 704 502 1 868 503 0 26876 504 1 56 505 0 19372 506 1 124 507 0 1676 508 1 204 509 0 468 510 1 352 511 0 84 512 1 360 513 0 2564 514 1 100 515 0 5652 516 1 132 517 0 16 518 1 16 519 0 196 520 1 164 521 0 328 522 1 168 523 0 416 524 1 1180 525 0 2428 526 1 64 527 0 944 528 1 40 529 0 220 530 1 80 531 0 604 532 1 28 533 0 192 534 1 452 535 0 3456 536 1 224 537 0 580 538 1 312 539 0 5020 540 1 120 541 0 360 542 1 2172 543 0 1008 544 1 532 545 0 140 546 1 2072 547 0 196 548 1 548 549 0 432 550 1 796 551 0 340 552 1 664 553 0 152 554 1 256 555 0 116 556 1 28 557 0 208 558 1 208 559 0 6508 560 1 1012 561 0 244 562 1 440 563 0 364 564 1 936 565 0 384 566 1 428 567 0 196 568 1 116 569 0 188 570 1 200 571 0 120 572 1 188 573 0 172 574 1 924 575 0 672 576 1 428 577 0 624 578 1 556 579 0 528 580 1 396 581 0 708 582 1 868 583 0 688 584 1 884 585 0 704 586 1 380 587 0 656 588 1 908 589 0 1520 590 1 372 591 0 644 592 1 1072 593 0 184 594 1 264 595 0 56 596 1 936 597 0 644 598 1 944 599 0 512 600 1 1128 601 0 572 602 1 452 603 0 612 604 1 944 605 0 640 606 1 448 607 0 1476 608 1 364 609 0 668 610 1 432 611 0 624 612 1 936 613 0 656 614 1 896 615 0 676 616 1 408 617 0 672 618 1 420 619 0 624 620 1 900 621 0 676 622 1 964 623 0 1432 624 1 420 625 0 648 626 1 436 627 0 628 628 1 448 629 0 632 630 1 384 631 0 708 632 1 336 633 0 716 634 1 292 635 0 788 636 1 368 637 0 672 638 1 908 639 0 1504 640 1 892 641 0 656 642 1 416 643 0 652 644 1 396 645 0 696 646 1 944 647 0 608 648 1 404 649 0 668 650 1 436 651 0 632 652 1 432 653 0 640 654 1 412 655 0 1484 656 1 396 657 0 652 658 1 908 659 0 672 660 1 912 661 0 660 662 1 400 663 0 704 664 1 852 665 0 704 666 1 884 667 0 692 668 1 872 669 0 728 670 1 868 671 0 47212 672 1 92 673 0 2160 674 1 76 675 0 172 676 1 100 677 0 288 678 1 368 679 0 100 680 1 300 681 0 120 682 1 184 683 0 1416 684 1 52 685 0 11540 686 1 52 687 0 4644 688 1 584 689 0 76 690 1 456 691 0 816 692 1 204 693 0 280 694 1 48 695 0 8716 696 1 172 697 0 460 698 1 824 699 0 1564 700 1 1396 701 0 2092 702 1 696 703 0 464 704 1 60 705 0 444 706 1 68 707 0 3684 708 1 1696 709 0 328 710 1 2168 711 0 808 712 1 924 713 0 696 714 1 376 715 0 664 716 1 416 717 0 648 718 1 680 719 0 372 720 1 1104 721 0 480 722 1 1028 723 0 556 724 1 464 725 0 600 726 1 944 727 0 1448 728 1 432 729 0 660 730 1 904 731 0 652 732 1 896 733 0 776 734 1 812 735 0 676 736 1 888 737 0 708 738 1 496 739 0 532 740 1 1096 741 0 232 742 1 740 743 0 1396 744 1 432 745 0 644 746 1 392 747 0 676 748 1 940 749 0 628 750 1 952 751 0 632 752 1 444 753 0 652 754 1 380 755 0 684 756 1 904 757 0 644 758 1 924 759 0 1484 760 1 392 761 0 700 762 1 356 763 0 712 764 1 360 765 0 672 766 1 412 767 0 668 768 1 404 769 0 656 770 1 384 771 0 712 772 1 360 773 0 704 774 1 880 775 0 1488 776 1 908 777 0 664 778 1 384 779 0 708 780 1 380 781 0 660 782 1 916 783 0 684 784 1 280 785 0 808 786 1 104 787 0 132 788 1 100 789 0 724 790 1 368 791 0 676 792 1 404 793 0 1464 794 1 420 795 0 644 796 1 916 797 0 668 798 1 892

[larrywal]

Matt - if it helps, I got a radio hooked up to my computer and grabbed the wave form from the remote. Here is the "On" signal.

I tried using a library called RC Switch to simulate the wave form but I can't make it work. Any suggestions to modifying your code to maybe do it?

[milksteakmatt]

The signal after you hit reset on the remote looks correct. I see similar values. My guess is that there's both something wrong with your transmitter and you have a lot of RF from somewhere else being picked up. It helps to put the signals in spreadsheet columns and compare them. You'll see the values from your remote align with those in the code but from your TX test, they aren't even close. Maybe set up a test with a very distinct transmission signal to ensure your chip is working.

[milksteakmatt]

If you want to try and get rid of the RF noise, you'll need things that absorb RF rather than reflect it. Or, you can drive out to a remote location.

[larrywal]

Thanks Matt - the reason I thought my transmitter was working properly (and also able to deal with the noise) is I ran the below two programs - one as transmitter, one as receiver. And the message was picked up fine (per screenshot). I'm using a cheap 433 mhz transmitter from amazon, and I soldered on this antennae. If/since the below works, do you still think something could be wrong with the transmitter?

Send code (from Arduino Uno):

Receive Code (Mega)

Also - here is a pic of my transmitter setup

[larrywal]

Also, I'm confident it's not interference because when I use the radio on the PC to listen and record what's coming through on the frequency, I only get hits from the arduino transmitter. When that's not running it's just solid static.

[larrywal]

Ha! Major breakthrough! I got the fireplace to turn on. Looks like the protocol your device was following is just different. I took your constant definitions and functions defined in the cpp file and put them into my file, then screwed around with the XX and OO to make the pattern match up. That did it! Now to investigate further....though I guess my library doesn't need to be as robust. Just on off initially.

[milksteakmatt]

Excellent. I wonder if they vary the pattern so you can control multiple fireplaces. Send me your code when you can.

[larrywal]

Sure - the code isn't at all cleaned up yet (I just dropped it into one file since I'm still not sure how libraries really work with the IDE -- any pointers?).

Code is below - IIRC the only differences with your code are in the startBlock, onOff, and the value block for on (the second block of three rows). Off looks the same so far. Note: When I did my test, I didn't play around with different values of thermostat, fan speed, or flame height. Not sure if those will adjust anything or not.

PS - did you ever try to get this running on a nodeMCU? For some reason this works fine on my Mega, but when I move the transmitter and code to a nodeMCU, the signal strength is super low and not working really.

` /* 433 MHz RF Module Transmitter Demonstration 1 RF-Xmit-Demo-1.ino Demonstrates 433 MHz RF Transmitter Module Use with Receiver Demonstration 1

DroneBot Workshop 2018 https://dronebotworkshop.com

//Assumes data PIN 12 */

// High/Low microsecond timings, first value is high timing, the rest alternate low/high

 // High and Low delay values.  Represented by XX and OO for visibility 
  const unsigned int XX = 880;
  const unsigned int OO = 380;

  // Fixed bit delay as the second value in each header pair
  const unsigned int HEAD_BYTE = 420;

  // Combined with the HEAD_BYTE, the delay after each header segment
  const unsigned int HEAD_BREAK = 830;

  // Number of 2 bit pairs in the header segment
  const unsigned int HEAD_SIZE = 4;

  // Fixed bit delay for the second value in each body pair
  const unsigned int BODY_BYTE = 700;

  // Combined with the BODY_BYTE, the delay after each body segment
  const unsigned int BODY_BREAK = 820;

  // Number of 2 bit pairs in the function segment of the body
  const unsigned int FUNC_SIZE = 5;

  // Number of 2 bit pairs in the value segment of the body used to represent values 0 to 5
  const unsigned int VAL_SIZE = 3;

  // Combined with the BODY_BYTE, the delay after each message
  const unsigned long MSG_BREAK = 90900;

  // Message is repeated multiple times
  const unsigned int MSG_REPEAT = 5;

  // Number of 2 bit pairs in the body segment of the message
  const unsigned long BODY_SIZE = 8;

  // Body is the last 3 segments that change each message
  const unsigned int BODY_REPEAT = 3;

  // Convenience value to use the same transmit and separate function from value
  const unsigned int NO_BREAK = 0;

  // Max reliable delay for Arduino delayMicroseconds
  const unsigned long MAX_DELAY = 16383;

  const unsigned long header[4] = {860, 380, 880, 380};

  const unsigned long startBlock[3][8] = {
    {XX, OO, OO, OO, XX, XX, OO, XX},
    {OO, XX, XX, XX, XX, OO, XX, OO},
    {OO, OO, XX, XX, OO, OO, XX, XX}
  };

  const unsigned long onOff[3][5] = {
    {OO, OO, OO, OO, OO},
    {XX, OO, OO, XX, OO},
    {OO, XX, XX, OO, XX}
  };

  const unsigned long flame[3][5] = {
    {OO, OO, XX, XX, OO},
    {OO, XX, XX, OO, XX},
    {XX, OO, OO, XX, OO}
  };

  const unsigned long fan[3][5] = {
    {OO, XX, OO, OO, OO},
    {OO, XX, XX, XX, OO},
    {XX, OO, OO, OO, XX}
  };

  const unsigned long value[6][3][3] = {
    { {OO, OO, OO},
      {XX, XX, XX},
      {OO, OO, OO}
    },
    { {OO, OO, XX},
      {OO, OO, OO},
      {XX, XX, XX}
    },
    { {OO, XX, OO},
      {OO, OO, XX},
      {XX, XX, OO}
    },
    { {OO, XX, XX},
      {OO, XX, OO},
      {XX, OO, XX}
    },
    { {XX, OO, OO},
      {OO, XX, XX},
      {XX, OO, OO}
    },
    { {XX, OO, XX},
      {XX, OO, OO},
      {OO, XX, XX}
    }

  };

  byte pinState;

const int pinChangeDelay = 0; // Value to subtract from numbers to compensate for instruction timings const int outPin = 2; // Transmitter output pin const int ledPin = 13; // LED output pin

bool done = false;

void setup() { pinMode(ledPin,OUTPUT); pinMode(outPin,OUTPUT); digitalWrite(outPin,LOW); delayMicroseconds(13000); done = false; }

void loop() { if (!done) { start(); done = true; } }

void transmit(const unsigned long msg[], const unsigned int msgSize, const unsigned int msgByte, const unsigned int endDelay) { for (int y = 0; y < msgSize; y++){ digitalWrite(outPin,pinState); unsigned long z = msg[y]; delayMicroseconds(z); pinState = !pinState; digitalWrite(outPin,pinState); delayMicroseconds(msgByte); pinState = !pinState; } delayMicroseconds(endDelay); }

void sendMsg(int msg, int val) { // msg: ON = 0, OFF = 1, FAN = 2, FLAME = 3 pinState = 1; noInterrupts(); for (int x = 1; x <= MSG_REPEAT; x++) { transmit(header, HEAD_SIZE, HEAD_BYTE, HEAD_BREAK); for (int y = 0; y < 3; y++) { transmit(startBlock[y], BODY_SIZE, BODY_BYTE, BODY_BREAK); }
for (int z = 0; z < 3; z++) { switch(msg) { case 0 : transmit(onOff[z], FUNC_SIZE, BODY_BYTE, NO_BREAK); val = 1; break; case 1: transmit(onOff[z], FUNC_SIZE, BODY_BYTE, NO_BREAK); val = 2; break; case 2: transmit(fan[z], FUNC_SIZE, BODY_BYTE, NO_BREAK); break; case 3: transmit(flame[z], FUNC_SIZE, BODY_BYTE, NO_BREAK); break; } transmit(value[val][z], VAL_SIZE, BODY_BYTE, BODY_BREAK); } if (x < MSG_REPEAT) { unsigned long END_DELAY = MSG_BREAK; while (END_DELAY > MAX_DELAY) { delayMicroseconds(MAX_DELAY); END_DELAY = END_DELAY - MAX_DELAY; } delayMicroseconds(END_DELAY); }
} interrupts(); }

void start() { sendMsg(0,1); delayMicroseconds(1000); sendMsg(2,0); delayMicroseconds(1000); sendMsg(3,1); }

void stop() { sendMsg(2,3); delayMicroseconds(1000); sendMsg(1,2); }

void on() { sendMsg(0,1); }

void off() { sendMsg(1,2); }

void setFan(int speed) { sendMsg(2,speed); }

void setFlame(int level) { sendMsg(3,level); } `

[wQQhce2g93Ei]

FYI for anyone who makes it this far. I updated a bunch of stuff with respect to Ardufuego in my fork. Namely I figured out more about the rhyme and reason for the commands and values. See the table in FireplaceRf.h.

The last 3 message segments are basically the following. [Command] [CommandOffset1] [CommandOffset2]

CommandOffset1 and 2 seem to vary per remote (along with the first two segments of the start message). In my case CommandOffset1 and 2 can be found like this.

CommandOffset1 = (Command + 253) % 256;
CommandOffset2 = ~CommandOffset1;

For PowerOn my last 3 message segments look like this. (purely coincidence that Command and CommandOffset2 are the same)

[Command]  [CommandOffset1] [CommandOffset2]
0000 0001    1111 1110        0000 0001

After figuring this out the code was able to be simplified greatly and I was able to map more functionality like Pilot, AUX1, and AUX2 easily.

[larrywal]

Wow - fantastic that you figured it out. My basic solution has been working well for years. I barely remember how. Maybe at some point I'll dust it off and try to upgrade... :)

[milksteakmatt]

Just getting back to this project to update it with voice control and super excited to see the additions. I'll be sure to update once I get my phase 2 running.