NLMS - Dutch ModelRailroad - www.nlms.info

The S88.

 

Soon I will place the S88 description here.

Click here for the schematic: S88

Click here for the parts list: S88

 

This is the interface which connects the S88 circuits with the parallel (lpt) port on the first computer. The serial (com1) port goes to the booster, on my layout a MRC with 8 amps of current.
The S88 circuit. Almost the same as a Marklin S88, however much cheaper to make yourself.
Here a small difference with the S88, a row of resistors and capacitors. This is to place all inputs on plus to prevent interference. When a ground signal is connected to the input it is detected as "on".
Here the circuit board from behind.

This page is last updated on 15 July 2012

NLMS - Dutch ModelRailroad - www.nlms.info