OtterCalc

opensource calculator with full keyboard and extras gadgets

Valérianne

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Description

End goal is a calculator in a fairly small form factor with a full keyboard.
Powered by an STM32F750Z8, an external flash, accessible serial/i2c/spi, a buzzer and battery charger.

Components

1 × STM32F750Z8 main mcu
1 × BQ24190 Power Management ICs / Power Supply Support
1 × LP38691SD-3.3 Power Management ICs / Linear Voltage Regulators and LDOs
1 × USBLC6-2SC6 ESD and TVS Suppressors / ESD and Transient Voltage Suppression (TVS) Diodes and Arrays
1 × MP3302DJ Interface and IO ICs / Display Interface