Inchworm project started

blueroomelectronics said:

It also needs power, some people don't hook up a wall wart to it and wonder why it doesn't work...

Click to expand...

3v0 said:

The power and gnd come through the ICSP cable.
Why does it not work ?

Click to expand...

williB said:

i did not notice any activity on pin 8 or pin 13 when i just scoped the max232 chip
this is R1in and R2in
i think you are right about the com port problem , any other sugestions?
note this is the same cable i used last night to test the serial port communications with my meter , the meter has rs232 communication capability.
and it worked

the signal may go by so quickly that i did not see it , but it isnt likely.the beam didnt budge.
to sum up :
a working cable
a working com port
yet no detectable signal, from the com port,

Click to expand...

williB said:

i got a blip from pin 12 ! on the max 232 chip.when i try to connect.
which is R2 out , which goes to pin 26 ,the recieve line on the 877

so i'm gonna assume the com port is working.

Click to expand...