I'm making a remote starter for a car using a Raspberry Pi. The problem is that the car has a manual transmission. The driver needs to remember to place the gear shift in neutral when parking, otherwise all kinds of bad stuff could happen when the car is started in-gear.
What possible solutions do I have for making an interlock that prevents the car from starting in gear? It's a 2001 Honda Accord, if that helps. I have seen transmissions with sensors (switches) on every gear, but this transmission does not have those. I thought of monitoring the speedometer sensor, but I think that info would come too late. I'm thinking I might have to put one or more switches on the shift lever to detect its position, but this sounds like a lot of work.