To assess those limits, he connected some cheap digital calipers to a Raspberry Pi by hacking the serial interface that seems to be built into all of these tools. His particular calipers output a ...

Meanwhile, a Raspberry Pi can serve as the core of Home Assistant, and you can use the MQTT/Serial Communication/MySensors add-ons to connect the HASS instance with the Arduino weather station.

so [Dave] built an Apple II to Raspberry Pi adapter card. Having a Pi talk to an Apple II over a serial connection doesn’t really give either machine the full capabilities of the other.

A hobbyist assessed CNC lead screw accuracy by building a setup using digital calipers interfaced with a Raspberry Pi. These calipers transmit data via a 76 kbps synchronous serial protocol, requiring ...