Help with bootloader/programming, please!

[raisin]

Well, so I soldered the PIC on, and connected the wires. I use the programmer from SparkFun: HERE


According to them and to here, I connected all wires correctly, but the tinybld says "COM 1 found, PIC not found". There are no solder leaks/bridges, and there is voltage at the pins of the PIC.

1) Can someone tell me what voltage at what pins should i have?

2) What else do I need to check???

3) Could the problem be with the computer/software?


Thanks for any help!!!

[raisin]

Nobody?

Well, at least some peoples' mintys worked...

[raisin]

Wow.. 162 views and no replies

I guess nobody else ever had that problem.

Well, I'll start over with an extra board and see if it is going to work... if not, well too bad.

[raisin]

Okay, maybe someone at least knows this: the programming requires 5 V, and I only have 4.85. Is this sufficient or could be a problem?

[lar]

did you try another pic chip?

[mikeccc987]

Is your powered on, it should be? Is your PIC bad? Also i've never programmed a PIC before so don't trust me over someone else.

[sliverstorm]

Lacking voltage could be a severe problem; one chip I just programmed earlier today gave me issues because of a six-inch ribbon cable between the (homemade) JDM programmer and the serial port. Shortened the cable and it works fine now. The issue as I understand it is the PIC doesn't enter programming mode unless a threshold voltage is reached.

Other than that, check your pins, make sure Vcc and Vss (gnd) are paired right, chip connected right, etc...