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trebuchet03 · 11-07-2008, 10:15 PM

I've got one more question before I solder my final bits

I'm using a thumbduino, so the power source is the 5V USB host... I don't have a 9V supply... Can I run from a regulated 12V supply? Already, I'm going to power the LCD from an external 5V regulator, I'm not sure if the USB host will support the thumbduino and the LCD (I don't think it will negotiate for more than 100mA).

That 9V is connected to both the 33920 and the OBD2 interface, so I don't want to screw that up

11-07-2008, 10:15 PM	#262 (permalink)
trebuchet03 MechE Join Date: Dec 2007 Location: Bay Area Posts: 1,151 The Miata - '01 Mazda MX-5 Miata Thanks: 0 Thanked 21 Times in 18 Posts	I've got one more question before I solder my final bits I'm using a thumbduino, so the power source is the 5V USB host... I don't have a 9V supply... Can I run from a regulated 12V supply? Already, I'm going to power the LCD from an external 5V regulator, I'm not sure if the USB host will support the thumbduino and the LCD (I don't think it will negotiate for more than 100mA). That 9V is connected to both the 33920 and the OBD2 interface, so I don't want to screw that up __________________ Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.