The M5Stamp Extend I/O Module ('STAMP IO') from M5Stack is an IO expansion board based on the STM32F030 main controller, using an I2C communication interface, providing 8 IO expansions. Each IO supports independent configuration of digital input/output, ADC, SERVO control and RGB LED control modes. Suitable for multi-channel digital/analog signal acquisition, and lighting/servo control applications. Features * 8-channel input and output expansion. * Digital input/output * ADC input * SERVO control (PWM) * RGB LED control * I2C communication interface: * Supports configuration of I2C address * Multiple soldering options * Three types of soldering options are available (SMT, DIP, Jumper wire), * With high-temperature resistant plastic enclosure, Peak temperature = 230℃ Package Contents * 1x STAMP IO * 1x HY2.0 4-pin female connector (red) * 1x Hex key 1.5mm Specifications MCU STM32F030 I2C Address 0x45(default) Number of IO expansions 8 IO Support Mode Digital I/O ADC SERVO control RGB LED control IO Support Input/Output Levels 3.3V Net Weight 2.5g Gross Weight 4.3g Product Size 15*4.7*16mm Package Size 93*138mm Resources * Product Wiki * Schematic * Arduino: * ADC Input * Digital Input/Output * RGB LED Control * Servo Control https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2023-03-07 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2023-12-27 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2024-09-18 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2024-11-29 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2024-11-30 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2025-11-28 https://elecena.pl/product/22727651/m5stamp-extend-i-o-module-stm32f0 2025-11-29