Alongside the Pi RFID wristband timing system, I've also designed and built an antenna RFID timing system, which is a more common type of race timing system. I used an 8 port RFID reader which sends read data to a RabbitMQ queue on an Intel NUC micro PC. The RabbitMQ queue holds the data whilst a consumer container reads from it and processes the scans into a database. The RabbitMQ and RFID scanner work together to ensure no reads are lost. The RFID scanner can send 2000 reads a second which is why the queueing system is necessary as they cant be processed in real time.

The NUC runs a large Docker container stack to host all the required services.