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USB-ISP-Programmer

 
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Altprogrammierer

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Joined: 25 Aug 2005
Posts: 3

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PostPosted: Mon Mar 06, 2006 7:45 pm    Post subject: USB-ISP-Programmer Reply with quote
The new USB-ISP-Programmer has a jumper to select between external power and internal power. I did not found which combination is correct. Is no jumper external power or the opposite?
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Altprogrammierer

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Joined: 25 Aug 2005
Posts: 3

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PostPosted: Tue Oct 03, 2006 11:56 am    Post subject: USB-ISP-Programmer Jumper Reply with quote
I found the answer by mail from PPHU "EMBUD".
For internal Power supply ( 5 V) jumper is connected.
If jumper is removed external power is selected.
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pbennett

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Joined: 27 Mar 2007
Posts: 45

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PostPosted: Tue Mar 27, 2007 1:11 pm    Post subject: Reply with quote
Does this mean that the programmer will power the device being programmed (for instance the ZL7AVR) if the jumper is connected? I measure only 1.6 volts on the +5v pin with no device connected. When should the green power led show? As soon as the programmer is connected to the computer's USB port? I cannot get Bascom to find the USB-ISP programmer.
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pbennett

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Joined: 27 Mar 2007
Posts: 45

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PostPosted: Wed Mar 28, 2007 11:06 am    Post subject: Reply with quote
Reinstalling the programmer got it working - provided I use a separate 5V supply for the ZL7. The programmer will only supply 4V with the ZL7's 30mA load, so the Atmega 128 is held in reset by the reset chip.
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