PIC16F84/16C84 Mini Programmer

As new microcontroller chips appear on the market, today’s microcontroller programming tools are becoming more and more ‘universal’ to cope with different programming conventions. It is also sadly the case that the more ‘universal’ the programmer, the more you need to pay. In practice, most people will only use a fraction of the capabilities of such a programmer, making it difficult to justify such an expense.The project here describes a minimal solution to the programming problem for one of the most popular types of controller.

Resistors:
R1 = 10kΩ
R2 = 22kΩ
R3 = 4-way SIL array 1kΩ
R4,R5 = 2kΩ2
Capacitors:
C1 = 47µF 16V
C2 = 100nF
Semiconductors:
D1-D4 = LED
D5 = 1N4148
D6 = zener diode 5V6, 100 mW
IC1 = PIC16F84
Miscellaneous:
9-pin sub-D socket (female), angled pins, PCB-mount version