i did not place any LED yet in the circuit. just like in the schematic (corrected) posted. for the info, the bzv 55c5v1 is a 5.1 zener diode, well, that is what i read in the datasheet
.
or should i use any other zener diodes? any suggestion of what type? or should i just change to other zener diodes such as 1N4733A or 1N5231B or 1N751A. all of those are 5.1 zener diodes. which one do you think is appropriate?
just for the info, i am using desktop pc.
or is there any possibility the the resistor has been faulty due to the initial miss-wiring (the opposite direction) the circuit?
will the assembly of the circuit on the breadbord caused all of this problems since i'm testing it on the breadboard.
i have measured the voltage output from my serial port (connected and not connected to programmer circuit) and it is in the attachment.i do not know how you want me to measure it, and if its wrong, just let me know how.
i dont think the serial port voltage is the issue because i can use the serial port and the cable to be attach to the developement kit i've been using and it works just fine.The development kit is from BizChip as posted below.
any help would be highly appreciated.thank you.