AM4 - HD44780 LCD Not Working?

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ReeceRobinson
Posts: 18
Joined: Sun Jun 13, 2021 6:28 am

AM4 - HD44780 LCD Not Working?

#1 Post by ReeceRobinson »

Hi,

I was trying to drive a 16x2 LCD screen (HD44780 based - 4 bit mode) as part of an Auto Pilot project I want to use with Air Manager 4. I started experimenting with Circuit Python first to work out how I might use the display. When I moved over to AM4 I was unable to get the API example Lua script http://siminnovations.com/wiki/index.ph ... dd#HD44780 to work on the same hardware setup that was working well with Circuit Python. I prepared a one minute video showing my prototype and the process steps to try an get it working with AM4: https://youtu.be/h3su5QpZ-yo.

I would appreciate your help in pointing out the obvious mistake I have made here?

Cheers,
Reece

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