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Daox · 01-12-2010, 10:00 AM

I've also been thinking about how to automatically disconnect the dc to dc converter and I think I have it figured out. The idea is to tap into the ethernet line that goes up to the switch up front. This can be done with connectors so install is very easy and no wire cutting is necessary. The switch up front sends a 12v ready signal to the dc to dc converter. I will use that 12V to power the arduino and another relay. The relay will disconnect 12V power after the arduino thus keeping power to the arduino, but cutting it to the dc to dc converter. This will also prevent the arduino from drawing 12V power while the car is off. Thusly, if you turn the PHEV switch up front off, the arduino will power down. When you turn it back on, it will restart the program canceling the 60 minute timer currently built in to the program.

Thoughts?

01-12-2010, 10:00 AM	#117 (permalink)
Daox Administrator Join Date: Dec 2007 Location: Germantown, WI Posts: 11,203 CM400E - '81 Honda CM400E 90 day: 51.49 mpg (US) Daox's Grey Prius - '04 Toyota Prius Team Toyota 90 day: 49.53 mpg (US) Daox's Insight - '00 Honda Insight 90 day: 64.33 mpg (US) Swarthy - '14 Mitsubishi Mirage DE Mitsubishi 90 day: 56.69 mpg (US) Daox's Volt - '13 Chevrolet Volt Thanks: 2,501 Thanked 2,587 Times in 1,554 Posts	I've also been thinking about how to automatically disconnect the dc to dc converter and I think I have it figured out. The idea is to tap into the ethernet line that goes up to the switch up front. This can be done with connectors so install is very easy and no wire cutting is necessary. The switch up front sends a 12v ready signal to the dc to dc converter. I will use that 12V to power the arduino and another relay. The relay will disconnect 12V power after the arduino thus keeping power to the arduino, but cutting it to the dc to dc converter. This will also prevent the arduino from drawing 12V power while the car is off. Thusly, if you turn the PHEV switch up front off, the arduino will power down. When you turn it back on, it will restart the program canceling the 60 minute timer currently built in to the program. Thoughts? __________________ Current project: A better alternator delete Last edited by Daox; 01-12-2010 at 10:13 AM..