Prismo is a simple NFC/RFID device that lets you control access to doors and machines. Easy to build, free to use, and friendly for beginners.
Everything you need to set up access control — simple hardware, free software, and a community-driven approach.
Fully open hardware and software. PCB schematics, firmware, and tools — everything is free and available on GitHub.
Control doors and machines with NFC/RFID cards. Add or revoke access for users in seconds.
Designed as a first soldering project. No special tools, no paid software, no expert knowledge required.
All components are off-the-shelf and affordable. Single-layer PCB can be made with CNC or toner-transfer.
First boot creates a hotspot. Connect, open prismo.local, enter your Wi-Fi credentials — done.
Built on MicroPython with frozen firmware. Flash directly from your browser — no IDE needed.
Three steps from unboxing to a working access point.
Flash the firmware to your ESP32-C3 board directly from the browser using our web flasher.
Connect to the Prismo hotspot, open prismo.local, and enter your Wi-Fi credentials and configuration.
Tap your NFC/RFID card to open doors or activate machines. Manage access from the web interface.
Prismo is built in the open. Contribute code, improve hardware designs, report bugs, or just star the repo — every bit helps.
View on GitHub