Isolated DMX splitter

Introduction When you need to connect DMX projectors you can use wireless or cable. In my case, I have a fixed setup so I use a wire solution. But the problem with DMX is the low immunity regarding disturbances. When a connexion is lost in the chain all the projectors after the losy connection...

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Mic to line amplifier

Introduction So I needed to connect a standard microphone to a conventional speaker amplifier. The signal comming out the mic is really low. It can be lower than 20mV. You need to amplify the signal to the line level. That’s why with the component I have in stock I do this simple microphone pre-amplifier....

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Getting DMX data in a PIC

Introduction When I need to change the functions of a fixture I use the DMX bus to drive them. This article presents you the software code I use (in C language) to decode the data. I’m using it on PIC MCU from Microchip. It may be possible to adapt the code for other hardware....

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