All I get is the soft reboot prompt. And if I click stop I get another error and it won’t reconnect to the i75. I have to push the reset button on the i75 to get a connection via Thonny.
Hmm i wonder if thats due to two screens? although you should see the broker connected - I am just wrapping it up into a github as i have added brightness as well. I’ll post when its up as the new code as a few tweaks - thanks again for trying!
Andy
What ever is happening is breaking the USB Serial connection. I have had scrolling text working in the past, as posted in that other thread. It’s just jumbled around on my setup. The i75 thinks my screens are side by side, while they are really one under the other.
I currently cycle through static text messages. I have auto brightness on mine too.
I have put the github up - it includes a video and a link to a 3D printed case :) https://github.com/digitalurban/Interstate75W_MQTT_Scroller/tree/main
Andy
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A quick question, please.
How are you powering this set up? Is it all running from the pico or is there an external PSU involved?
Thanks.
My setup is powered by an external separate power supply. 5V 4A connected to the i75 screw terminals.
My custom USB cable has the +5V wire cut. Just Data +, Data - and ground are connected. This prevents the magic blue smoke from appearing. ;)
Mine is via the pi pico - it can run a single matrix - the code can also reduce brightness so dropping the power draw…
Andy
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I also popped a quick blog post up on it - https://www.digitalurban.org/blog/2024/07/12/creating-an-scrolling-hub75-matrix-display-with-pimoroni-interstate75w-and-mqtt/
Andy
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