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18f4455 on veroboard
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Date: 2007/04/12 23:09
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By: MoosaB
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Status: Visitor
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I am using the HID mouse example on a veroboard. The behaviour is rather erratic, Sometimes the device gets enumerated correctly and sometimes i get the "device not recognised", at this point Vusb drops to 3.05V from 3.35V when working correctly.
Is there anything extra i need to do when working on veroboard cause i think the firmware is OK.
Am using 300nF between Vusb and VDD , and 100nF between VSS and VDD. The device is bus powered.
The picusbdemo circuit seems to suggest both VSS and VDD are connected to power supply or is it me 
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Re:18f4455 on veroboard
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Date: 2007/05/01 15:36
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By: dariog
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Status: User
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Karma: 6
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| Posts: 107 |   |
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Am not sure, but probably your problem is the board. Is Veroboard a Breadboard or real PCB?
I had no troubles with USB PICs on even ugly PCBs, but if connections are not good you may experience that problem.
Or you can also add some 10-22uF cap across 5V VCC.
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