All the code is available on GitHub in case you also have a DSC 1550 alarm system. It’s a pretty slick hack, so don’t forget to check out the video after the break.

If you’ve scavenged some random keypads and want to reuse them in a project without the hassle of figuring out the pinouts, then [Cliff Biffle] has an interface module for you.The Keypad Go ...

To support this platform, Arduino hardware already features on-board crypto-authentication chips and certified comms modules spanning Wi-Fi, BLE, LoRa, LTE Cat-M, and NB-IoT.