Jonathon Oxer and Hugh Blemings describe an excellent power regulator for Arduino in automotive applications in their book “Practical Arduino Projects”. Loguino doesnt need to be notified about a power failure, but it did seem sensible to be able to provide a buffer which may help when the car is being started.
- IC1: LM294OCT-5 – An automotive grade 5v regulator
- D1: 1N4001 Diode
- F1: 3A Fuse
- C1: 100uf Capacitor
- C2: 47uf electrolytic capacitor ideally rated to 16v max
- C3: 47000uf capactor, rated to at least 60v