After assembling it on a concrete footing and adding some steel bracing, they got to work on adding an environment management system based around a Raspberry ... the Pi used its RS-232 output ...

[Adam] decided to make the board more accessible by adding a Raspberry Pi extended with an RS232 Hat. This add-on board comes with two serial ports supporting the +/- 12 V signal levels used in ...

The Elecrow Pi Terminal-7” is a versatile industrial ... It’s equipped with CAN bus, RS232/RS485, digital I/O, ADC, and relay controls, making it compatible with a variety of industrial ...