-------------------------------------DMX-shield
The DMX-shield is an add-on (or "shield") for the Arduino. It is an easy way to use the Arduino as a DMX-Master device (transmitter), just by adding the DMX-shield on the top of the Arduino. This shield is a simple circuit based around a driver chip (MAX-485 or SN 75176). The Driver Block Outputs the 3 Pins are needed for sending DMX (DMX-Pin1 -> Reference (GND); DMX-Pin2 -> Signal inversion (cold); DMX-Pin3 -> Signal (hot)). Furthermore is the Driver Block taking care of changing the Arduino signal Voltage (0V / 5V,) into the DMX signal Voltage (-2,5V / +2,5V, according to RS485).
check out this much better (and better looking) version of the Dmx-shield by Raphael Perret >>link
Which connectors and how to connect them?
- If connectors are used, then it should be 5-pin XLR types (some people use a 3-pin XLR, do what you want).
- Pin 1 = signal reference = cable shield
- Pin 2 = signal inversion = " - "
- Pin 3 = signal = " + "
- Pin 4 = optional (e.g. acknowledgment)
- Pin 5 = optional (e.g. acknowledgment)
(edited by tomek ness (k3/fhp))