Piezoelectric sensors are great for monitoring mechanical impacts with a microcontroller. Whether you’re monitoring knocks on a door or watching a heartbeat, they are a cheap way to get the job done.

Sfera Labs of Milan has launched an 80 x 80mm multi-sensor edge-computer built around the Raspberry Pi RP2040 microcontroller. Called Exo Sense RP, module integrates temperature, humidity, VOC (air ...