This product is a 2.42inch display expansion module, compatible with Raspberry Pi series boards, Arduino, STM32, ESP32 and more.
#define SDI_PIN 11 // SDI (serial mode) signal connected to pin 6 #define SCL_PIN 13 // SCL (serial mdoe) signal connected to pin ...
A push button is wired to ground and connected to pin D10 of the Arduino. When the button (SW1) is pressed, the calculator switches to scientific mode, displaying ‘scientific mode’ on the OLED screen.
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