Some fairly major (and frankly rather overdue) changes are coming in the way that users access the GPIO pins on the Raspberry Pi. The shift will (hopefully) be fairly gradual and, for users of certain libraries, entirely invisible. However, for others they may be quite disruptive. As forewarned is forearmed, hopefully this little article may be of some use to those affected!
Found on https://ubuntu.com/blog/ubuntu-22-10-on-the-raspberry-pi-delivers-new-display-support-and-the-full-micropython-stack
Open source hardware design for a Hardware Attached on Top (HAT) GNSS receiver based on Septentrio Mosaic modules.
Nice description of some circuit and layout details.
The SmartPi expansion module extends the Raspberry Pi by interfaces for voltage measurement and non-contact current measurement and thusbecomes a fully-fledged SmartMeter that controls and records powerconsumption and power generation and makes it available in the network or the Internet.
Hat for Raspberry Pi with a number of sensors:
BME280 temperature, pressure, humidity sensor
LTR-559 light and proximity sensor
MICS6814 analog gas sensor
ADS1015 analog to digital converter (ADC)
MEMS microphone (datasheet)
0.96" colour LCD (160x80)
Connector for particulate matter (PM) sensor (available separately, see https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable?variant=29075640352851 )