Arduino: use of tinkerkit dmx receiver - relay

Hello everyone,

I need to use more relays on Arduino, so I bought the tinkerkit dmx receiver - relay, because it has 4 relays available.

The problem is that there are no instruction how to use it. Every manual present on the internet has no specifications about how to give commands to relays.

I'm able to command single relays module but, with this one, I can't understand the meaning of the PINS D+ and D- and also the little ten switches which are on the rectangular chip.

I just want to use the

4 relays. I don't need other kind of use of this board.

Can anyone help me?

Thank you so much.

Robert Peter Oakes over 10 years ago

This board is as you say a DMX board, it utilizes a 2 wire differential serial communications to send instructions to it (There is a micro on the board)

you will need to purchase or make a DMX master shield to talk to your DMX relay board, a library is available from tinkerkit and the linked arduino.cc page below
this is the DMX master from tinker kit:
http://store.arduino.cc/product/T040060

the 10 switches will be to set the address of the board, DMX can have a huge number of boards in series (128 of this particular board (512 relays) )

D+ and D- will be the differential drive communications to go from controller to each board in series

NOTE: this board will handle MAINS for the relays (So it claims and there does seem to be suitable clearance on the PCB tracks), EXTREME care should be taken and seek professional advise if you don't have experience with mains, given half a chance it will try to kill you.

Peter
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Robert Peter Oakes over 10 years ago

If your intention was to have a simple relay board for the arduino to control mains then something like this would have been better

http://www.amazon.com/gp/product/B0057OC5O8/ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944687442&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B007JOEVNW&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1Z5M3SWM76BN3Z8HZ1ER

NO DMX, no fuss no special libraries. NOTE THE WARNING ABOVE RE MAINS STILL APPLIES
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