EME Controller OE5JFL May 2009
Page 11 of 13
Parts list motor/encoder interface board
1 x PCB
2 x L6203
8 x BYW98
2 x LTC485
***
2 x IC socket 8pin
***
1 x 7805
6 x Jumper 2pin
1 x Jumper 3pin
1 x RJ45 LAN connector (fem) 8pin
1 x connector 2x10 pin
3 x connector 2pin (DC, 2x motor)
4 x button
1 x 3pin connector (future application)
1 x 1000µF, 40V
2 x 47µF
2 x 220nF
4 x 100nF
4 x 15nF
2 x 0.5 Ohm, 5W
2 x 2k2
4 x 1k
6 x 22k
2 x 10k
2 x BC547
4 x BC557
***
Only necessary if you are using RS485 for A2-S-S encoders. In that case leave the four
jumpers JP1..4 (close to the transistors) open.
When using other encoders (MAB25,…), unplug the LTC485 drivers and close the jumpers JP1..4
The PCBs were designed with EagleCAD, the files for all boards are available.
For Az/El encoder
connection you additionally
need the small splitter PCB
and a 8 pin LAN connector.
On the picture two (cheap)
MAB25 12bit encoders are
connected to the splitter
board.
***
If you use the A2-S-S,
you need additionally on the
splitter board:
2 x 270 Ohm, 4 x 2k2
