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xoseperez / espurna

Home automation firmware for ESP8266-based devices
http://tinkerman.cat
GNU General Public License v3.0
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H801 brightness level is not high enough #157

Closed xoseperez closed 6 years ago

xoseperez commented 7 years ago

Originally reported by: Pete (Bitbucket: xbmcnut, GitHub: xbmcnut)

Hi there,

Love your work. Just flashed H801 with 1.8.1 (modified for RGB only) and when I replaced my MiLight LED controller, the wife immediately complained that the lights weren't bright enough. After growling a fair bit, I pulled it out yesterday and ran it in my lab with 12.8VDC. I noticed on power up that the output I was monitoring (blue) goes to 12.2 volts on boot but then settles to 8.23 volts after 0.5s. Sending 0,0,255 to max out the blue channel reveals the same; 8.23 volts blue, 1 volt green, 0 volts red.

Is there a way to increase this in code or is this somehow hardware related? Can anyone else measure the voltage output?

xoseperez commented 7 years ago

Removing milestone: 1.9.8 (automated comment)

xoseperez commented 7 years ago

Released with 1.9.8

xoseperez commented 7 years ago

ESP8266_new_pwm is now in the dev branch. It reaches 100% duty cycle and also fixes the flickering when saving to EEPROM. Will be released on 1.9.8 soon

xoseperez commented 7 years ago

Apparently Espressif SDK has some limitations on PWM: https://github.com/StefanBruens/ESP8266_new_pwm

xoseperez commented 7 years ago

Version 1.9.1 solves the issue in the boot status of the lights. The only cause of the drop in the voltage after 0.5s might be the trigger of saving data to the EEPROM (see #191).

xoseperez commented 7 years ago

Removing milestone: 1.8.4 (automated comment)

xoseperez commented 7 years ago

Tested with the multimeter using latest ESPurna release and all channels look OK. Mind they are common anode so measure the voltage.

xoseperez commented 7 years ago

Original comment by azer (Bitbucket: zerros, GitHub: zerros):

Hi, sorry for the time. I've done a video shared on youtube: https://youtu.be/XlLtqhrP-FY

The controller is running espurna 1.8.3. We can see that the led strip is ON at boot but the boot switch is "Always OFF", but the brightness is FULL. When I click on "power on" switch, the brightness decrease.

Hope that this video can illustrate the problem.

xoseperez commented 7 years ago

Original comment by azer (Bitbucket: zerros, GitHub: zerros):

I'll try to make a small video on youtube or gdrive of the two h801 boxes.

xoseperez commented 7 years ago

These are common anode LED strips, so when at full power the voltage between a color channel and ground will be 0. That's OK. But that does not explain why 1) they seem to be not as bright and 2) they are ON even if the switch status is OFF...

xoseperez commented 7 years ago

Original comment by azer (Bitbucket: zerros, GitHub: zerros):

Sorry for my bad english.

Hi, I'm have the same problem. I have 2 H801. One is flashed with h801-debug and ythe other one has the origin firmware. I will test the original as soon as possible and make some measures.

EDIT: Ok, i have ~10.10v on the white leds (RGBWW led strip). If I send this to the board (http://ledtv.zerros.lan/api/color?apikey=xxxxx&value=255,255,255"), it respond me #FFFFFF

But the leds do not shine as brightly as at startup when I plug the power. When I plug the power, all the leds are shining (even if the default switch status is off), and I have 0V everywhere.

My power supply is a 12v 3a

Second EDIT With the original firmware, the white led shine much more, and the value is 0V ??? I can't explain that ...

xoseperez commented 7 years ago

Original comment by Pete (Bitbucket: xbmcnut, GitHub: xbmcnut):

Sorry, no. I did not test prior to flashing. It is odd though that the voltage goes to max on boot then settles down around 70% a few milliseconds later.

xoseperez commented 7 years ago

Do you think it's a firmware issue? Have you had the chance to test the H801 before flashing ESPurna on it?