Blip

Overview and features

Blip is a development board for Bluetooth Low Energy (BLE) and 802.15.4 based wireless applications, based on the Nordic Semiconductor nRF52840 SoC. It has a Black Magic Probe compatible programmer and debugger built-in along with temperature/humidity sensor, ambient light intensity sensor, and a 3-axis accelerometer. It is usable to prototype for very low power applications, and debugger and regulator can be disconnected when only SoC needs to be powered.

Features

• Raytac MDBT50 module based on Nordic Semiconductor's nRF52840
• nRF52840 advanced single chip 2.4GHz multiprotocol SoC
• 32-bit ARM Cortex-M4F processor, 1MB flash + 256 kB RAM
• external crystal oscillator 32.768MHZ, on-chip 32MHz
• Power Supply: USB, JST connector for Li-ion/Li-po, Vext 1.8V - 3.3V
• BQ24079 battery charging and power management IC
• Built in 3.3V LDO for USB and Lipo
• MicroSD slot
• Bluetooth 5 support for long range and high throughput
• 802.15.2 radio support
• LIS2DDH12 High-performance 3-axis "femto" accelerometer
• Optical Sensor LTR-329ALS-01
• Si7006-A20 I2C humidity and temperature sensor
• On board STM32F103CBT6 as Black magic probe debugger

Operating conditions

Maximum Input Voltage

• USB powered : 5V
• Vext = 1.8V to 3.3V
• Vbat = Lithium ion/polymer 3.7/4.2V battery

Power Ratings

• Max current through USB: 150mA (for charging and/or system power)
• When powering with Vext, the debugger, charging IC, and LDO are bypassed for low current consumption

[Note: battery is not required for powering blip]