On Sat, 14 May 2011 09:09:15 +0100, "N_Cook"
wrote:

cannot find reference to these boards on zimo.at

Has the same main connectors as this
Bachmann E-Z Command 8 Pin To 21 Pin Adaptor
http://images.nitrosell.com/product_...umb-36-559.jpg
a bit bigger board plus outlet connectors, labelled on board, for LED1,
LED2, motor, R+ L- = rail pickups ?, Spk = speaker? and Aux1 which the
output of the 555 via the transitor goes to

21 pinning seems to agree this
http://www.bobclay.co.uk/smalldcc/dcc33.jpg


Some connections he-
http://www.bachmann.co.uk/pdfs/21pin..._diagram-1.pdf

Are you certain it is a Zimo board?