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Flickering LED panel #9

Open tamkar1982 opened 3 years ago

tamkar1982 commented 3 years ago

Sometimes the LED's are flickering, do you had that issue too?

josephtyler commented 3 years ago

I haven't yet addressed that in this guide, but take a look at @ZLevine's NHL scoreboard guide for an example of how to fix the flicker: https://howchoo.com/pi/diy-raspberry-pi-nhl-scoreboard-led-panel#optional-anti-flicker-mod

tamkar1982 commented 3 years ago

I have soldered pin 4 and 18 together on the hat and now I have to change the --led-gpio-mapping settings. From "adafruit-hat" to "adafruit-hat-pwm". I tried to change it in the "frame.py" file. Before self.args['led_gpio_mapping'] = kwargs.get('led_gpio_mapping', 'adafruit-hat') After self.args['led_gpio_mapping'] = kwargs.get('led_gpio_mapping', 'adafruit-hat-pwm') When I compose and restart the docker than nothing works! The led are completely off Do you have any suggestions how to pass the settings argument otherwise, or is there any other code to check when changing the --led-gpio-mapping settings?

josephtyler commented 3 years ago

@ZLevine do you happen to remember when you built the scoreboard if there is anything that looks off here?

docjfnoel commented 3 years ago

Did anyone find a solution for the flickering problem?

twingall1 commented 3 years ago

Did anyone find a solution for the flickering problem?

Yes, solved mine by following the above article: Soldered wire between pins 4 & 18 on the matrix bonnet. Then editing frame.py to make these changes: led-gpio-mapping=adafruit-hat-pwm led-slowdown-gpio=2 (not sure if this one helped or not)

Then docker-compose up --build. No more flicker!