Building & using:

If you want to build an 16x8x- or Development-type programmer only you can leave away 'IC 1' along with 'T 1', 'ZD 1', 'R 1' and R 2. In this case put the jumper towards the border of the board (towards the middle if you use PIC-Flash II as a Production-type programmer).

Adaptor:

Power supply & ZIF-socket:

The socket for the PIC should be ZIF-type. This extends the pins' lifes, is more comfortable and reliable than a normal one. If you could not get one with rounded pins just solder a pin row between PCB and ZIF. If you have a model with 20 pins just leave the two next to the lever empty - all PICs use the same pin for pin 1 !

After building check both voltages in every case. The 74's use 5 volts - measure between pins 14 (Vcc) and 7 (GND). The programming voltage at the output of the LM 317 should be 13.0 volts - adjust using P1.

The cable between PC and programmer should be no longer than 1 meter, use a shielded one if possible. At the programmer's end a post connector has to be used, the 25 pin Sub-D connector at the PC can be crimped or solder wires #2-9, #12 and #17-19 to a normal one.

Schematic & Bill of materials

Schematic	#	REF DES	Description
	1	IC 1	74 LS 14 (C-MOS-Inverter with Schmitt-Triggers)
	1	IC 2	74 LS 06 (TTL-Inverter with open collector)
	1	IC 3	LTC 1257 CN8 (Serial 12 BIt-DAC) OPTIONAL !
	1	IC 4	LM 317 (Adjustable voltage regulator 1.2 - 30 V)
	1	IC 5	7805 (fixed voltage regulator + 5 V)
	1	T 1	Transistor 2N3904
	2	T 2, T 3	Transistor BC 328-25
	1	T 4	Transistor BC 557 B
	1	Br 1	Bridge rectifier 40 V / 0,5 A
	1	ZD 1	Zehner diode 10 V / 0,5 Watt
	1	D 1	Schottky diode BAT 43
	1	Ld 1	LED green (indicates PIC access)
	1	Ld 2	LED red (indicates power supply)
	1	P 1	Trimmer 10 K-Ohm
	4	R 1.. R 3, R 13	Resistor 10 K-Ohm / 0.125 watts
	4	R 4.. R 6, R 9	Resistor 4,7 K-Ohm / 0.125 watts
	2	R 7, R 12	Resistor 2 K-Ohm / 0.125 watts
	3	R 8, R 10, R 14	Resistor 220 Ohm / 0.125 watts
	1	R 11	Resistor 560 Ohm / 0.125 watts
	3	C 1,C 2,C 4	Capacitor 100 nF
	1	C 3	Electrolyte Capacitor 2200 uF
	-	Other	Jumper, soldering nails, transformer, ZIF-socket, connectors, ribbon cable and PCB, see text

Component Layout

Software:

A few notes about using the software (PIC Flash II - the windows version should be self explaining):

Before loading/saving/reading/writing you have to select the right PIC type in the 'PREFS'-menu. It's also neccessary to select the printerport to which the programmer is connected and to lay down, if the fuses and the data EEPROM should be loaded/saved with the hex (or binary) file. 'Read/Write' code/data/fuses can exclude reading/writing these areas. These settings - along with the PIC-type and size - are also displayed at the bottom of the 'I/O'-Screen.

'Chip erase' only works for Flash devices, it's normally not neccessary to erase a flash device as long as it has not been code protected.

In the 'Fuses'-menu fuses can be changed and displayed. Please be aware that you have to select the right PIC in the 'PREFS'-menu to ensure that this feature works correct.
The power settings are the same for all devices. Normally leave programming Vcc at 5.0 volts, minimum voltage at 4.5 and maximum at 5.5 volts. These values don't care if you operate the hardware in the development-mode. Edit them only if you are using a PIC with a different voltage range.

Since software version 1.15 you can access the new hardware test feature using the 'T'-key inside the 'EXIT'-menu.
First set Vcc to 5.00 volts then check it along with Vpp (should be adjusted to 13.00 volts at the MCLR-pin). Afterwards - without changing Vcc - you can check the data and clock lines. Data input should follow the data line output.

The programmer itself should also only be connected or disconneted to the PC while both are turned off.