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Sid2286
Joined: 12 Aug 2010 Posts: 119
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Hardware Issue |
Posted: Wed Oct 27, 2010 4:40 am |
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Hi,
I have 5 seven segments connected where i'm displaying the analog inputs.
the circuit works fine on ICD2.
however, when I'm placing it on breadboard, m getting display but its all fluctuating. It is not at all constant :(
Please help me
Regards,
Sid |
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temtronic
Joined: 01 Jul 2010 Posts: 9229 Location: Greensville,Ontario
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Posted: Wed Oct 27, 2010 5:02 am |
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Without schematic or code it's hard to tell but first guess is power supply capacity. I would suggest a minimum of 2 amps at a rock stable 5 volts,with appropriate bypass caps both on the supply and near the PIC on the breadboard. |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19518
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Posted: Wed Oct 27, 2010 5:13 am |
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Other thing - grounds.
The ICD, will give you a nice solid ground and will be connecting back to the PC ground. 'Breadboard', won't.
Make sure you don't have 'daisy chained' grounds with analog circuitry connecting along a ground path where currents for the displays are being drawn.
Best Wishes |
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