PIC18F Based 6 Channel DMX Transmitter

Step 3 Start Point to Point

There are many ways to go about this, which I am not covering here but with the board laid out in a reasonable fashion it shouldn't be to difficult. I usually start with the power traces and work my way out from there. I always avoid crossing to jumper wires over eachother, even though they should be insulated, but it is unavoidable sometimes. Just make sure that both wires insulation is fully intact. 

Make sure that the potentiometer have their voltage hooked up right so the correct direction is value up or down. In my case the pot's contacts on the bottom of the board was hooked to negative and other end to positive, so when the pots were slid upwards towards the PIC, it increased the DMX value. I did it wrong first and had to go back and fix it. The pot's center should be connected to the PIC pin, the other to 3.3v(not 5v) and ground.

- The Oscillator and the SN75176 require a 5v input and the PIC requires 3.3v.

- Most 3.3v regulators have a different pinout than a 7805, so make sure and find out.

- The male XLR receptacle is not required or is the ICSP jack.

Comments

[PS118]

Can't really read the schematic. Could you please add that and possibly the firmware as downloads?

Thanks. :)

[ChromationSystems]

Its all in the ZIP file in step one, eagle files, schematic, source code, HEX files

[PS118]

Cool, thanks!