Hacks to the RepRap Motherboard v1.1

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Revision as of 07:40, 19 June 2009 by Adrianbowyer (talk | contribs)
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If you want to run this board off the USB cable without the big power connector do this:

Front-small.jpg

Put a link across two of the mounting holes for that connector (just to the left of A). Solder in a 3.3V regulator (78L33) and a 100uF smoothing capacitor at B. The flat on the regulator and the -ve wire on the capacitor are both towards the bottom of the picture.

Note - if you want access to the RS485 but don't want to use RJ45 connectors you'll find that simple 2.54mm pin headers fit neatly into the connections (see C).

Back-small.jpg

Then put a link as shown at A above between the third pin of the USB TTL input (the red wire on the USB connector) and pin 2 of the ISP connector.

Your board will now be fully powered by the USB cable.