Salman Faris of OSHWA write about the latest ceritied Open Source Hardware in Make:
In May 2021 the Open Source Hardware Association (OSHWA) certified a wide variety of hardware as open source. we will have a certified variety collection of Open Source Hardwares, Let’s take a look! (And remember, certification is a free and easy way to show that your hardware complies with the open source hardware definition.)
First, many makers are interested in space and astronomy. The Astrohat is a Raspberry Pi 4 compatible hat for all your astronomy equipment. It comes with six 12V controllable outputs @3A each with current monitoring (2 PWM controllable for dew heaters), a temperature, humidity and pressure sensor port (external module), one adjustable 6-12 V output, and one port for serial communication and power to external device like a GPS. It’s the 5th piece of certified hardware from Greece. You can find the details here.