MCUmall EPROM BIOS Chip Burner Forum
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 Open Source Project Willem Programmer Hardware
 Problem with PCB3B schematic
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fegster69

United Kingdom
2 Posts

Posted - 04/05/2012 :  03:44:09  Show Profile  Reply with Quote
Hi all

I'm new here, and after doing a search for Eprom programmers I came across this site. I am going to build my own board using the circuit diagram for the Dual Power version. I am using Kicad to lay out my circuit and board, but I have come across an issue that I was hoping you could clarify for me.

On the circuit diagram there are power points labelled VPP and Vcc1 but no where on the diagram does is show where these supplies come from. The Vcc obviously is supplied via the 7805 Voltage Regulator.
Also where in the circuit is the USB connector?? It's plainly on the picture of the board that I have saved but not in the circuit.
Could any one clear this up for me???

Thanks

Andy
Reply #1

Bad_Ad84

210 Posts

Posted - 04/05/2012 :  04:58:48  Show Profile  Reply with Quote
PCB3 isnt USB

The USB version of the Willem isnt open source.
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Reply #2

fegster69

United Kingdom
2 Posts

Posted - 04/05/2012 :  05:44:23  Show Profile  Reply with Quote
I didn't think it was but its strange that it shows the USB connector in the image of the board here http://www.mcumall.com/forum/topic.asp?TOPIC_ID=104

Andy
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Reply #3

Bad_Ad84

210 Posts

Posted - 04/12/2012 :  13:59:06  Show Profile  Reply with Quote
Power only
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