pic programming failed

[oliboy]

1. PIC is not powered up when you try to program it.



how do i know that my pic is powered up?..

[dmitri]

1. PIC is not powered up when you try to program it.



how do i know that my pic is powered up?..

By powering it up. You power it up over USB when you try to program it, don't you?

[oliboy]

yes....but how will i know its powered up?..

[dmitri]

Firelord in the first reply gave you a link to a thread where it all discussed. On the second page of that thread it says how to check voltages: viewtopic.php?p=9046#p9046

[oliboy]

i need help...
i can't program my pic...
i need to check the voltages in my pic but i don't where to connect my testers probes...
can anyone please help me...

[dmitri]

Firelord in the first reply gave you a link to a thread where it all discussed. On the second page of that thread it says how to check voltages: viewtopic.php?p=9046#p9046

[oliboy]

do i have to remove the pic to test?..

[dmitri]

No

[oliboy]

i know how to read and use a tester but i don't know where to put the probes..where will i put the red or black probe of my tester when i read a voltage?..for example...i want to read voltage across pin 2...where will i place the probes?..

[Firelord]

i know how to read and use a tester but i don't know where to put the probes..where will i put the red or black probe of my tester when i read a voltage?..for example...i want to read voltage across pin 2...where will i place the probes?..

Here's a straight answer.

digital-board-brd_probing.png

On the image above, you see the digital board as it is (i.e. how you would see it from the copper side). Now, the green dot marks the ground. You should put the black probe of your meter to the ground. The red dots mark the 1, 14, 15 and 28 pins of the PIC. For obvious reasons, I didn't put all the numbers in there, but the bottom row is "14 13 12 11 10 9 8 7 6 5 4 3 2 1" and the upper "15 16 17 18 19 20 21 22 23 24 25 26 27 28". You should put the red probe - the testing probe - onto these pins and read the voltage levels on them. DON'T FORGET TO SET UP THE MULTIMETER TO THE DC VOLTAGE SCALE; selecting the 20V DC scale should be all right.

And, of course, always be careful with a USB powered board, do not accidentally short circuit the power lines.