Artemis Board from SparkFun
So far I have done only very basic work with this board. The lack of the micro SD card or SPI flash means that external data storage must be used. It does have the QUIIC connectors for sensors which makes connecting some boards easier, and it can charge batteries.
This is a neat little board I found online. The key features here are very low power use and the bluetooth radio. Unlike some of the feathers, this board does NOT have an on board flash nor micro SD card. But, thank goodness, I happen to have a supply of the flash chips from the Teensy 4.1. These ought to work with the board with the right drivers. (And I have some of the breakout boards that I can use to wire up the chip easily.) The memory layout seems pretty normal without fancy dedicated RAM like some others. Lower power use, smaller battery, less mass, longer flight times. Also less power, could run from solar cell for a long time.
The features of the processor:
- Feather Footprint
- 1M Flash / 384k RAM
- 48MHz / 96MHz turbo available
- 21 GPIO Pins – all interrupt capable
- 21 PWM Channels
- Built in BLE radio
- 8 ADC channels with 14-bit precision
- 2 I2C buses
- 1 SPI bus
- 2 UARTs
- PDM Digital Microphone
- I2S Interface
- Qwiic Connector
The Artemis Module from SparkFun is a Cortex-M4F with BLE 5.0 running up to 96MHz and with as low power as 6uA per MHz (less than 5mW).