Old Dot-Matrix Displays Give Up Their Serial Secrets

If there’s one thing we like better around here than old, obscure displays, it’s old, obscure displays with no documentation that need a healthy dose of reverse engineering before they …

Hackaday Prize 2023: Pi Pico Measures Volts, Amps And Watts

Measuring a voltage is pretty easy: just place your multimeter’s probes across the relevant pins and read the value. Probing currents is a bit trickier, since you need to open up the circuit …

Supercon 2022: Irak Mayer Builds Self-Sustainable Outdoor IoT Devices

[Irak Mayer] has been exploring IoT applications for use with remote monitoring of irrigation control systems. As you would expect, the biggest challenges for moving data from the middle of a field…