e-ink 2.13 demo not running unless connected to PC
Posted: Mon Apr 26, 2021 4:21 am
Hi everyone.
Pi Pico with a Pico-specific e-Paper-2.13 from waveshare.
I have Thonny, and when the pico is usb connected to my Windows PC I can get different scripts to run. When swapping to a "wall powered" USB plug the demo script for the ePaper doesn't run but simple "blink the pico led" ones do - same usb cable etc used. This cable and powersource has run my pi3 and other heavier things at times so I'm sure it's getting enough juice to activate the e-ink screen lol.
Step 1: main.py on pico is LED blink script - runs connected to PC
Step 2: main.py on pico - epaper demo - runs connected to PC.
Step 3: main.py on pico is LED blink script - runs connected to wall power.
Step 4: main.py on pico - epaper demo - doesn't run connected to wall power.
I'm assuming it's something in the epaper demo script that requests info from the computer to start the demo, but I can't figure it out. I was hoping someone had come across this or could point me to a better tutorial to start interacting with the e-ink screens on pico. Obviously my web searches haven't found anything so any advice or pointers will be very much appreciated.
The demo script is https://www.waveshare.com/wiki/Pico-ePaper-2.13 under Resources - Demo Codes. I'm using /python/Pico_ePaper-2.13.py
This is the module https://core-electronics.com.au/wavesha ... white.html
Pi Pico with a Pico-specific e-Paper-2.13 from waveshare.
I have Thonny, and when the pico is usb connected to my Windows PC I can get different scripts to run. When swapping to a "wall powered" USB plug the demo script for the ePaper doesn't run but simple "blink the pico led" ones do - same usb cable etc used. This cable and powersource has run my pi3 and other heavier things at times so I'm sure it's getting enough juice to activate the e-ink screen lol.
Step 1: main.py on pico is LED blink script - runs connected to PC
Step 2: main.py on pico - epaper demo - runs connected to PC.
Step 3: main.py on pico is LED blink script - runs connected to wall power.
Step 4: main.py on pico - epaper demo - doesn't run connected to wall power.
I'm assuming it's something in the epaper demo script that requests info from the computer to start the demo, but I can't figure it out. I was hoping someone had come across this or could point me to a better tutorial to start interacting with the e-ink screens on pico. Obviously my web searches haven't found anything so any advice or pointers will be very much appreciated.
The demo script is https://www.waveshare.com/wiki/Pico-ePaper-2.13 under Resources - Demo Codes. I'm using /python/Pico_ePaper-2.13.py
This is the module https://core-electronics.com.au/wavesha ... white.html