Power games.... I need to get some consumer feedback.
So I know that many of you interested in buying the Halo's want them to start-up on the remote unlock of the car. This is not as easy as it sounds!
Firstly, I have been through all of the systems (central locking, lighting etc) and there is no easy to use trigger signal, so I need to get creative.
What I have come up with is a bit crude but works and has some interesting side effects I need to get feedback on.
If I chain 3 relays together, 2 of which are delay off types and 1 a delay on, I can make it unlock on the remote:
By using an indicator pulse to feed the first timer relay I get a 2 minute power supply before the second timer relay takes over from the ignition. The problem here is that you have to have got into the car and started it within 2 minutes before they automatically switch off. Not necessarily a bad thing as it saves battery if you unlock it on the drive while your cleaning the car for example. The delay on just buys the couple of seconds needed to stop the indicators upsetting the start-up routine via the interrupt. 2 minutes can be any length of time from 1 second to 30 minutes btw. 2 was my initial thinking, perhaps 5 minutes would be better?
When the key is removed from the ignition, the second timer relay (assuming it starts its countdown on the removal of power rather than the application of power TBC) gives us a second 2 minute window to get out and lock the car.
When the car is locked by the remote again the indicators flashing with the alarm will cause the first timer relay to start a final 2 minute countdown giving a follow me home function before the Halo's eventually switch off. If you dont get out of the car within two minutes of removing the key from the ignition (unlikely? or again, car washing situation), the halo's will switch off, when you then lock the car on the remote, they will switch on again for 2 minutes and then switch off automatically afterwards giving the follow me home function.
Aside from the obvious, if the indicators fire for any reason, such as the alarm going off the Halo's will start-up and stay on for 2 minutes. Again, not necessarily bad as it adds more light to the alarm situation! Also, if you put the hazards on when you're broken down, it would also cause the Halo's to go on and stay on due to the flashing of the indicators. Again, bad or not?
So, side effects, good, bad, dont care?