13 lines
776 B
Markdown
13 lines
776 B
Markdown
# lcd2serial
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Reads out a 7-segment lcd display and sends the value via serial.
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## How to port another display?
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Analyse the display pins. You can use the ProMicro as a logic analyzer, to find the relevant segment pins and the common pins.
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You can use the information provided here: https://lowpowerlab.com/forum/projects/moteino-kitchen-scale/
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To use the Pro Micro together with PulseView you can use this repository: https://github.com/gillham/logic_analyzer
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For more Information on LCD display consult: http://awawa.hariko.com/avr_lcd_drive_en.html
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## possible improvements
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- error handlich of the serial connection. (If screen is kill in operation. The microcontroller needs a restart to reset the serial connection)
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- handle all 4 digits by the print_digit() function.
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