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codingcatgirl / split-flap-fae-pcb

Alternative drop-in replacement PCB for David Kingsman's split-flap display
Apache License 2.0
15 stars 3 forks source link

SCK and MOSI pins swapped #1

Closed turtlekiosk closed 2 months ago

turtlekiosk commented 2 months ago

Hi, this is a great design and I got it fabbed at JLC. I was trying to program the atmega using the ISP pins and I noticed the MOSI and SCK pins are swapped on the board!

codingcatgirl commented 2 months ago

What do you mean, "swapped"? Are they labeled incorrectly? That's not been the case when i flashed them.

So i assume you just have a programmer that has a 6-pin connector for the ISP headers and those two pins are swapped on it? That's unfortunate then, but would indicate that your programmer probably just uses a non-standard layout?

turtlekiosk commented 2 months ago

Ah sorry, you're right, the actual pinout is correct. I didn't notice because I was using an Arduino as ISP to flash the chips so I was manually inserting the leads into each pin, but I do think the labels for SCK and MOSI are labeled incorrectly.

codingcatgirl commented 2 months ago

Thanks, i just fixed it.

evilscientress commented 2 months ago

btw. @turtlekiosk The original firmware is not compatible with this PCB. I have a fork that works with the PCB we designed and also has some additional functionality. https://github.com/evilscientress/split-flap

btaylor112 commented 3 weeks ago

@evilscientress Could you clarify, is the firmware you have updated compatible with this updated PCB?

evilscientress commented 3 weeks ago

@btaylor112 yes. @codingcatgirl and me designed the PCB together. The firmware was modified specifically for this PCB.