The QFP-48 breakout board when it first arrived
The STM32F070CBT6 MCUs that I'm currently using
My minimal setup for the MCU
The setup that I used to debug I2C for the screen
calc-rs showing off order of operations and negative numbers
The screen on the calculator working for the first time
The current schematic of the calculator
The current design of the keyboard (I plan on making it a lot smaller in the final iteration)
The setup that I used to test the keyboard matrix
calc-rs running on the device
calc-simulator showing off basic operation and menus