OkGo is Cambridge University Space Flight's rocket firing controller.
OkGo was designed for testing the Quasar hybrid rocket motor. It allowed remote (over 100m of wire) control of the nitrous oxide valve and firing of the ignition e-match. It was constructed using an ad-hoc point-to-point layout. An entirely passive design, it simply uses mechanical switches to trigger relays. It was later upgraded to control two valves, one of which passed a low flow of nitrous oxide to help start the motor.
OkGo 2 was a full redesign for the launch of Martlet 2. Due to the increased safety radius (on the order of 500m) radio control is to be used. It will have 4 general purpose (valve or e-match) channels with independent continuity checking and firing, and separate firing boxes containing current limiting resistors.
OkGo 3 is another full redesign for the launch of Martlet 3. It will continuity check and ignite a single channel with a constant-current drive. Ignition and control will be small and light for portability.