Name: Timer Power Unit with OLED Display (INA3221)
Brand: M5Stack

Parts › Interface & Expansion › Programmers, Debuggers & USB-Serial

U189 · M5Stack

Timer Power Unit with OLED Display (INA3221) photo

Unit TimerPWR is a timed power supply unit with main functions such as "charge/discharge + timed switching + screen display + boost output". It features an embedded STM32 microcontroller for implementing RTC (Real-Time Clock) and overall control, allowing users to set automatic power-on and power-off times according to their needs. The unit is powered via a Type-C interface and can be connected to a rechargeable battery through a 1.25-2P interface. It includes a built-in battery charging… (M5Stack U189)

Part number	U189
Manufacturer	M5Stack
Category	Interface & Expansion › Programmers, Debuggers & USB-Serial
Pins	4

Timer Power Unit with OLED Display (INA3221) pinout

Pin	Name	Type	Description
1	SIG1	bidirectional	PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map
2	SIG2	bidirectional	PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map
3	5V	power
4	GND	ground