March 04, 2013

Controlling old traffic lights with Arduino

 If you somehow come across an old set of traffic lights, the following tutorial may be of interest. Instructables user "fzumrk" has described how they controlled the mains-rated light bulbs inside the traffic lights with an Arduino and some mains-rated relays. The methods described may not be up to local electrical standards, however it's an interesting read and if you have the lights - food for thought. The results have been demonstrated with a fitting soundtrack in the following video:

A safer method would be with 12V automotive lights, however that's up to the individual. Nevertheless click here for more information. And for more, we're on twitter and Google+, so follow us for news and product updates as well.

 If you're working with relays and Arduino - it's much easier to use dedicated relay control boards. Here at Freetronics we have the RELAY4: board, perfect for controlling up to four relays with Arduino (or any other microcontroller's) digital output pins:

Or if you'd like to control up to eight relays - or more at once with an Arduino Uno orcompatible board - consider our RELAY8: board. Controlled via I2C, you can stack up to eight shields with the appropriate power supply to support 64 relays at once:

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