DCC servo decoder
Decoder is suitable for turnouts, gate, mechanical semaphore, etc. Decoder has potential free polarity switch for frog and back indication and second programable relay.
Programming of address and commands, limits, speed and other function via one button. Without difficult programming through CV table.
Decoder is directly supplied via DCC signal.
Movement can be controlled without DCC with push button.
Decoders are delivered with firmware 1.7, this fw is capable to set arm of servo ±80° from middle point, set speed of movement (fw 1.7 has extended range against fw 1.6), possible set middle short stop for simulating twist catch of signaller, function of second relay:
1 – back indication blinking – blinking during servo`s movement, after stop will signalise position
2 – back indication switch over – relay switch over after finish servo`s movement
3 – switch on during movement – relay switch on during servo’s moving
At order please note if require version D, boards are delivery with version B by default:
B – version for turnout, derailing stop, one arm mechanical semaphore. Can control one servo, one relay is for change polarity of frog, second is programable as above.
D – version for two arms mechanical semaphore, output for two servos. Relay 1 signalling status main arm, relay 2 signalling status second arm.
Illustrating picture, shape and colour of component could vary. Functionality is still same.
Board size 75x45x~25mm
Voltage supply 7~18V, recommended is 12~18V DCC, consumption current ~300mA during servo movement, <70mA in idle.
All consumption are measured at 15V and turnigy TG9 servo.
Firmware is written according to:
NMRA S-9.1/2006 – DCC electrical standard
NMRA S-9.2.1/2012-7 – DCC Extended Packet Formats
Known failure during programming of address is described here.
All prices are exclude trasnport costs. I accept PayPal payment.
Price of alone DCC decoder 14€ include VAT.
Price of complete set B version (1x DCC decoder, 1x servo`s holder, 1x servo, wire) 18€ include VAT.
Price of complete set D version (1x DCC decoder, 2x servo`s holder, 2x servo, wire) 25€ include VAT.
Manual for download
Firmware SVR2 v1.6 and v1.7
Operating manual SVR2 v1.6 (828.9 KiB, 140 hits)