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This is the schematics as published by the author Henk Schaer (used
to be file schema.txt).
+5V
15..30V |14
+-------+ +--+--+
V+ ]--|>|---+-----+ 78L05 +--- +5V | 7407|
| +---+---+ +--+--+
| | |7
| GND GND
| +-------+ A K
+-----+ 78L12 +--- +12V ------[LED]------[1k]----GND
+---+---+ "Power"
V- ]--- GND |
GND A K
Vpp ------[LED]------[1k]----GND
"Activity"
Vdd
|14
Vdd-[10K]--+ +---------+--------+
1|\ 2 | 13| |
D0 (2)-----------+ >--------------+-------+ RB7/Data |
|/ | | |
+5V-[10k]-+ | | |
| 12 /|13 | | PIC 16C84 |
Busy (11)-------+--< +--------------+ | 18 pin |
\| | ZIF Socket |
Vdd-[10k]--+ | |
3|\ 4 | 12| |
D1 (3)----------+ >---------------+------+ RB6/Clock |
|/ | |
Vpp-[10K]--+ | |
5|\ 6 | 4| |
D2 (4)----------+ >---------------+------+ -MCLR/Vpp |
|/ | |
+---------+--------+
|5
+5V GND
|
+--[10K]---+
| |
11|\ 10 | B |/ E
+-----+ >----[10K]--+--------| PNP
| |/ |\ C
| |
| +---Vdd
| |
| [10K]
| |
| GND
|
| +12V
| |
| +--[10K]---+
| | |
| 9|\ 8 | B |/ E
D3 (5)----+-----+ >----[10K]--+--------| PNP
|/ |\ C
|
+---Vpp
GND (19)------GND |
[10K]
|
GND