Unit TimerPWR
SKU:U189
Description
Unit TimerPWR is a timed power supply unit with key functions including charging and discharging, scheduled power switching, status display, and boosted output. Its built-in STM32 microcontroller handles the RTC (real-time clock) and overall control, allowing users to set automatic power-on and power-off times as needed.
The unit is powered through a Type-C interface and connects to an external rechargeable battery through a 1.25-2P connector. Its built-in battery charging circuit supports a charging current of 330mA. It also includes a DC-DC boost circuit that can supply 5V/800mA (when powered by a 1400mA@1C battery) to external devices through the Grove port. In addition, the built-in INA3221 sensor monitors input and output current and voltage in real time.
The unit features a 0.66-inch OLED display and two side buttons for user interaction, making it easy to view real-time system status and modify settings. Users can configure the unit with the side buttons or access the I2C bus through the Grove interface and use I2C commands to set power-on and power-off parameters. This product is suitable for smart homes, industrial automation, timed-control equipment, and similar applications.
Features
- RTC cyclic timer control
- Battery powered
- Built-in DC-DC boost circuit
- Current / voltage monitoring
- OLED display
- Grove interface
- Button-controlled power-on / power-off mode
Includes
- 1 x Unit TimerPWR
- 1 x HY2.0-4P Grove Cable (20cm)
Applications
- Timed-control equipment
- Portable electronic devices
- Sensor node power supply
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32G031G8U6 |
| Input Voltage | Supports 5V DC input (through the Type-C interface) |
| Output Voltage | Built-in DC-DC boost circuit providing 5V output for external devices |
| Battery Power | 3.7V lithium polymer battery |
| Display | 0.66-inch OLED display, 64x48 resolution, SPI communication |
| Interfaces | Type-C interface: used to charge the battery (cannot directly power the Grove port) Grove interface: used for external sensor and module expansion, supporting communication and external power output Battery interface: 1.25mm@2P |
| I2C Communication Address | 0x56 |
| Current Sensor | INA3221 |
| Charging Current | DC 5V@330mA |
| Charging IC | LGS4056H |
| Charging Temperature | 55°C |
| Grove Port Max Output Current | Depends on battery capacity and discharge capability, e.g.: 1400mAh@1C 3.7V:DC4.96V@800mA 500mAh@1C 3.7V:DC4.97V@700mA 110mAh@1C 3.7V: DC5.03V@400mA |
| Standby Current | DC4.2V@36.67uA |
| Operating Temperature | 0 ~ 40°C |
| Product Size | 40.0 x 24.0 x 11.0mm |
| Product Weight | 7.5g |
| Package Size | 138.0 x 93.0 x 12.0mm |
| Gross Weight | 13.2g |
Learn
Power Supply
Schematics
PinMap
Unit TimerPWR
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
STM32G031G8U6
| STM32G031G8U6 | PB6 | PB7 | PA11 | PA12 | PB4 | PA0 | PA4 |
|---|---|---|---|---|---|---|---|
| I2C1 (GROVE) | SCL1 | SDA1 | |||||
| I2C2 (INA3221) | SCL2 | SDA2 | |||||
| LED (Charging Indicator) | CHAG | ||||||
| Button A | BTN_A | ||||||
| Button B | BTN_B |
OLED
| STM32G031G8U6 | PA2 | PA1 | PA6 | PA7 | PB0 | PB1 |
|---|---|---|---|---|---|---|
| OLED | OLED_MOSI | OLED_SCK | OLED_DC | OLED_RST | OLED_CS | BL_EN |
Model Size
Datasheets
Softwares
Arduino
UiFlow1
UiFlow2
Internal Firmware
Protocol
Video
- Unit TimerPWR Product Introduction and Example Demonstration
- UiFlow2 Use