Best quality and proce.
Northlight's RC servo controllers will receive DMX512 digital protocol for Stage lighting products and controls 8 RC hobby servos.
No complicated setup, basically the board is plug and play. Easy to use screw terminals, just supply power.
Home Page DMX to 0-10 VDC converter DMX to Relay driver Convert 0-10VDC to DMX512 protocol. Isolated DMX splitter. DMX to PWM servo DMX512 DC PWM boards Misc items on sale Application circuits for Encoder and Decoder Notes about DMX 512 protocol Trouble shooting guide. Warranty and disclaimer.
  • The Northlight Systems Servo controller board is capable of receiving DMX512(1990) signals.
  • The servo controller also receives serial data from a PC serial port @ 9600 BPS. PC communication is acomplished with a simple use a 3 byte method, examples are available for download.
  • Use jumpers to select from 8 pulse widths.
  • There are 255 discreet positions for each pulse width.
  • On board address switch.
  • Addresses all 512 channels for DMX and 254 channels for PC serial.
  • Use jumper to select DMX512 or PC serial port.
  • Input screw connectors.
  • Requires 7.5 - 12 volts DC @ 100mA, to power board.
  • Separate power connector for Servos.
  • Fast RISC microcontroller and Assembly language firmware.
Address switch options
There are 2 options shown below.
Select a switch type when ordering.
Mini DIP Switch

The Mini DIP switch is mounted on the circuit board.
Use this when infrequent address changes are needed.
The address is entered in standard binary code, starting with 0.

board mounted switch

 Mini DIP Switch with LED
The Mini DIP switch is mounted on the enclosure panel.
Includes LED and connecting lead.
The address is entered in standard binary code, starting with 0.
panel mounted switch
Click in the "Contact" button for Warranty info.
SRV08M -- 8 Channel servo controller with on board address switch.
 		Only $49.00


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SRV08P -- 8 Channel servo controller with panel mount address switch.
 		Only $59.00

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SPECS:
Input Signal: Northlight SRV08 board accepts DMX512, current and legacy versions. The Serv8 can receive data at the full rate and is responsive to all 512 channels.
Output: Output is 8 PWM servo channels. Update at 50Hz. There are 256 discrete servo positions.
Address: Set the starting address to the first in a group of 8. Start with address 0 up to 512 for DMX and 254 for PC serial port.
Power requirements: 8 to 12 volts DC @ 100 mA for the controller.
Board connections: All connections to the board are made via micro screw terminal blocks. Acceptable wire size is 20 - 30 AWG. See manual for connector locations.
Green Signal LED: If the green LED is blinking, there is no valid signal present.

PC Serial port protocol
To communicate with the Serv8 through the serial port, you can use just about any computer that has a serial port on it.
The protocol used is compatible with a number of servo controllers including Scott Edwards's mini SSC servo controller.
There are several commercial animatronics software packages and freeware available for a servo controllers using this protocol.

Connections:

Only 2 wires are needed from the PC serial port.
PC ground is connected to DMX input 1.
The RS232 signal is connected to DMX input 2.

On a standard DB-9 connector use these pins:
Pin 3 = Serial data
Pin 5 = Signal ground

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Made in the USA.