T-Impulse Plus get it now

Overview

T-Impulse Plus is a low-power wristband based on the nRF52840 chip, featuring an optimized power efficiency design. Minimum deep sleep power consumption reaches 10 μA – 40 μA (actual values may vary across boards due to differences in onboard components). Shutdown power consumption is below 1 μA. The board integrates an OLED display, SX1262 LoRa module, MIA-M10Q GPS, ICM20948 IMU, SPI Flash, and TTP223 capacitive touch button. Suitable for low-power wearable IoT applications.

Quick Start

Example Support

Example	Arduino / PlatformIO	Description
original_test	✓	Factory test program
Battery_Measurement	✓	Battery voltage measurement
BLE_Uart	✓	BLE UART communication
Display	✓	OLED display test
Display_GPS_BLE_Uart	✓	Display + GPS + BLE combined
Flash	✓	SPI Flash read/write
Flash_Erase	✓	SPI Flash erase
Flash_Speed_Test	✓	SPI Flash speed test
GPS	✓	GPS basic example
gps_2	✓	GPS example variant
GPS_Full	✓	GPS full-featured example
ICM20948	✓	IMU sensor test
IIC_Scan_2	✓	I²C bus scan
sgm41562	✓	Power management IC test
SX126x_PingPong	✓	LoRa ping-pong test
SX126x_PingPong_2	✓	LoRa ping-pong test (variant)
sx126x_tx_continuous_wave	✓	LoRa continuous wave TX
ttp223	✓	Touch button test

PlatformIO

1. Install Visual Studio Code and the PlatformIO IDE extension
2. Clone the T-Impulse-Plus repository and open it in VS Code
3. Open platformio.ini, uncomment the desired example under [platformio]
4. Click ✓ to compile, click → to upload
5. If you encounter an error during first setup, open tool/win10 vscode platformio start/ and run python t_impulse_plus_setup.py to complete board installation

Arduino

1. Install Arduino IDE
2. In Preferences, add the Adafruit board URL: https://www.adafruit.com/package_adafruit_index.json
3. In Board Manager, search for Adafruit_nRF52 and install the Adafruit package
4. Copy all folders from the project libraries/ to your Arduino libraries folder
5. Select board settings:

Arduino IDE Setting	Value
Board	Nordic nRF52840 DK

6. Enter bootloader download mode: Press and release RST, wait 1 second, then press and release RST again. A new drive letter will appear on the computer.
7. Click → to upload

JLINK Flashing

1. Install nRF Connect for Desktop and JLINK
2. Connect JLINK pins correctly
3. Open nRF Connect → Programmer tool
4. Add bootloader + firmware files, click Erase & Write

Development Platforms

1. Visual Studio Code
2. Arduino IDE
3. PlatformIO

Video

Key Features

• nRF52840 ARM Cortex-M4 @ 64 MHz, 1 MB Flash, 256 kB RAM, Bluetooth 5.0 LE
• SX1262 LoRa (S62F module, SPI)
• MIA-M10Q GNSS (UART)
• SSD1315 OLED display, 64 × 32 px (I²C)
• ICM20948 9-axis IMU (I²C)
• ZD25WQ32CEIGR 4 MB SPI Flash
• TTP223 capacitive touch button
• SGM41562 power management IC
• Deep sleep: 10–40 μA; shutdown: < 1 μA

Product Parameters

Parameter	Value
MCU	nRF52840
RAM	256 kB
Flash (MCU)	1 MB
Flash (External)	4 MB (ZD25WQ32CEIGR, SPI)
Bluetooth	Bluetooth 5.0 LE
LoRa	SX1262 (S62F module)
GPS	MIA-M10Q GNSS
Display	SSD1315 OLED, 64 × 32 px
IMU	ICM20948 (9-axis)
Touch	TTP223 capacitive button
PMU	SGM41562
Deep Sleep Current	10–40 μA
Shutdown Current	< 1 μA

Pin Diagram

Dimensions

Schematic

• T-Impulse-Plus_V1.0 Schematic

Datasheet

• nRF52840 Datasheet
• SSD1315
• S62F (SX1262)
• MIA-M10Q
• ICM20948
• ZD25WQ32CEIGR
• TTP223
• SGM41562

Software Libraries

• T-Impulse-Plus GitHub Repository

Dependent Libraries

• Adafruit_BusIO
• Adafruit-GFX-Library
• Adafruit_SPIFlash
• RadioLib
• TinyGPSPlus
• ICM20948_WE
• cpp_bus_driver

FAQ

• Q. How do I enter bootloader download mode? A. Press and release RST, wait 1 second, then press and release RST again. A new drive letter will appear on the computer indicating the device is in bootloader mode.

• Q. Why is there no debug output from USB? A. Enable the DTR option in your serial monitor software.

• Q. Arduino IDE prompts to upgrade libraries — should I? A. Do not upgrade. Different library versions may be incompatible; stay with the versions in the libraries directory.

• Q. Still don't know how to set up the programming environment? A. Refer to LilyGo-Document for additional setup instructions.

Version History

Version	Release Date	Update Description
T-Impulse-Plus V1.0	2025-06-18	Initial release