As announced two days ago, the external display for FT817 lives! Here is a preview video of what it does at the present time.
The microcontroller board is exactly the one of my FT817 keypad. I only needed to add a connector to source +5V and GND to power the display.
Depending on firmware size, some single-function buttons could be added around the display, such as VFO A/B, split, mode roll.
Comments welcome.
Very nice! Much easier on the old eyes with the larger display.
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Bob VE3MPG