https://farad.space/tags/sentex/Recent content in Sentex on Nate's BlogHugoen-usTue, 06 Jan 2026 00:28:54 -0800https://farad.space/posts/gateoverview/Tue, 06 Jan 2026 00:28:54 -0800https://farad.space/posts/gateoverview/<p>When we purchased our house, it came with a gate at the end of the driveway controlled by a Sentex Crown Jewel keypad. The keypad is programmed over 300 baud modem via the Win98 software CJWin32. While it is possible to run this software under a VM on my Mac, I wanted to try building a replacement as an excuse to learn PCB design. It would absolutely be trivial to replace the gate computer with a Raspberry Pi or similar, but that would defeat the point of the project as an educational exercise.</p>