5 transistor PIC programmer *Schematic added to step 9!

Step 6 ICSP port side

In my setup, I chose to make clock bottom, data top, and ground, Vdd, and Vpp inbetween. This is completely arbitrary.

The ICSP data pin will connect to BOTH the pullup resistor for the "data out" tranny AND to the base resistor of the "data in" tranny. BLUE circles **EDIT: pull up Data Out with either a 1k resistor, or with all 5 remaining 10k pullups on the resistor network. Using just one 10k resistor will cause data high signal to be divided down to 2.5V.. That won't register as high, as CMOS parts running at 5V need about 3.5V to register high.

The Vpp pin will connect to the PNP transistor's collector.

The Vdd pin will connect with your network resistor pin 1. ORANGE circles If you want an on/off switch on the programmer, insert it between these points.

The ground pin will connect somewhere on the ground strip.

The clock pin will connect with the pullup resistor of the "clock out" transistor. YELLOW circles

Comments

[klee27x]

it'll work for some pic18F's. To see, you have to look at the programming software you plan to use to see what it supports, then also you have to find out if it's supported on the TAIT programmer, which this basically is.

[little_dice]

This is really awesome what you've done here... I just wanted to know if the same rig can be used for a pic 18 series microcontroller...for sure... A speedy reply would be greatly appreciated...