I got this M5Stack module just for the fun of it. As audience of devkami knows, I am a fan of M5stack for their line of embedded development kit. It is a ESP32 SoC packaged with a set of default sensors. Also it is in a case.
The atom is one of the smaller devkit from M5stack. This is a development kit that based on ESP32-PICO-D4. It have a 4MB Spi flash, bluetooth, wifi, 5x5 RGB LED, IR LED, a Grove connector and extra GPIO.