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Bread-board circuit for testing LCD and keyboard

A project log for Hardware Data Logger

Easily extendable data logging platform featuring STM32F103RBTx, WiFi, microSD storage, LCD with four buttons, UART, and pulse counters.

robert-gawronRobert Gawron 08/25/2021 at 14:510 Comments

I've created a draft of the device using bread-board to check if I correctly connected LCD to stm32 nucleo and to have something to do driver development before ordering PCB. In addition I've added to the board up/down/left/right keys.

Connections changes to original schematic:

LCD connection:

Keys:

I've also tried to solder the part responsible for dimming the LCD but having only MOSFETs in SOT-23 package, it seems to much to work.

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