Are you using the same program between the 887 on the demo board and the 877A in the circuit? If so, it won't work.Originally Posted by menta
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Are you using the same program between the 887 on the demo board and the 877A in the circuit? If so, it won't work.
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The program is working when I use the programmer as power supply.
I of course compiled the program differently for each controller.
I have multimeter, What is the best way to check the current ?
serially to the + ?
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That's practically the only way to measure it (short of using a series resistor).
Connect the meter in-line with the positive supply and the positive on the circuit.
Make SURE your meter can handle an amp or more.
If it can't handle that, you'll either smoke your meter or just blow a fuse.
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I will.
If I use the second circuit 7805 output and connect it to the first circuit (with the 16f887) it is working ok. (it has same parts including the LCD)
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i'm using a code to print 1,2,3... to the LCD
I see that it prints the numbers but also print junk,
So I guess something is making noise on the LCD input.
Tried with a resistor to the ground and some 22pF capacitors, but it doesnt help.
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Yes, serially connect the meter to +, set it to 10 Amps. Why not do the following. Use 1 7805 for the display and another 7805 for the PIC. you can place the circuits in parallel if you so wish. you will need a third 7805 (maybe) for the 2803. Keep us informed if you can
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Guys,
I have a another circuit with 1 7805 that push the PIC16f887 and the same LCD type.
I think its something else.
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