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USB-MIDI (TRS) Interface
RS485Bridge with Screw Terminal
Teapotlabs Feather RAK3172
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Teapotlabs Feather RAK3172 a Low-cost, Low-power LoRaWAN development board that breaks out RAKwireless RAK3172 to an Adafruit Feather-compatible format.
Teapotlabs Feather RAK3172 a Low-cost, Low-power LoRaWAN development board that breaks out RAKwireless RAK3172 to an Adafruit Feather-compatible format.
Based on the RAK3172, a STM32WLE5CC based module with ARM Cortex M4 processor, 48 MHz and 3.3V logic. The chip has a 256K of flash and 64K of RAM. With low-power application in mind, the board is capable to be in sleep mode for as low as 11uA, it also has a built-in voltage divider to sense battery voltage and battery charger.
Teapotlabs Feather RAK3172 is part of Teapotlabs open-hardware project and is heavily inspired by Penguino STM32WL LoRa-E5 and BastWAN-WLE projects!
Specification
RAK3172 : An STM32WLE5CC module at 915MHz
3.3V only power/pin.
Down to 11uA Deep-Sleep
Switchable TX Power. 14 dBm or 22 dBm on 915MHz frequency
Supports LoRaWAN 1.0.3
USB-C for Arduino and Mbed OS/STM32Cube programming
SMA antenna connector
JST-PH 2-Pin Battery Connector
Built-in LiPo Charger ( 200mA Charge Rate )
Voltage-Divider for Battery Monitoring ( default: disabled )
LED Indicator on pin 8 ( default: disabled )
Compatible with many Adafruit FeatherWings
1A Max VCC power output
Power Consumption
Power consumption measured using Nordic PPK2 . The following are the summary of the measurement:
Sleep and all jumper disabled (JP1 - JP6): 10.44 uA
Sleep and UART-Bridge enabled ( JP3, JP5, and JP6 ): 23.76 uA
Sleep, UART-Bridge and Battery Sense enabled ( JP1, and JP3 - JP6 ): 25.41 uA
Transmit at 14 dBm: 40.45 mA
Transmit at 20 dBm: 100.38 mA
More detailed measurement can be found here
Teapotlabs Feather RAK3172 is a feather compatible board, and hence is compatible with the many available FeatherWing.
The following are a example project that uses multiple FeatherWings.
An over-engineered clock with main purpose to showcase FeatherWings compatibility. FeatherWings and sensors used:
Front and Side View
What's Included
1x Teapotlabs Feather RAK3172 ( 915MHz )
More information can be found at Teapotlabs Feather RAK3172 Github page!
Teapot Laboratories
Indonesia
Creating open-source hardware for everyone to make!