Open Source Design
The design of the IMPLS fiver and IMPLS sport started with the number of conductors in a standard Ethernet cable. Ethernet cables are not very durable, but they are inexpensive. You can carry a brand new 50´ spare for $10.00. A 25´ cable is even cheaper than that. There are eight conductors in an unshielded ethernet cable. These are sufficient to carry Voltage, Ground, Arm channel, and five pad positions from the Controller to the Console.
The IMPLS fiver is a simple electro-mechanical system consisting of two units, the Controller and Console, which are used to provide continuity test and launch control of up to five model rockets. The system operates on a single 12vdc power source, connected to the Controller. Controller and Console are connected by a standard ethernet cable.