Decodificador 4CH*4A RGBW DMX 512 de 4 Canais, Controlador LED DC12-24V para Fita LED
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This is a great little unit, but if your experience is like mine you'll need to possess a voltmeter and be prepared to do a little soldering first. If yours doesn't work as expected, suspect the 5V rail is faulty. Mine was only 2V - not enough for much to happen at all. A quick check of the 78M05 5V regulator showed only a couple of volts going in. In the image you can see i mistakenly pulled out the main smoothing electro first, but the root cause is "R23", which to my decaying eyes appears to be 330 ohm resistor in series with the input, depriving the voltage regulator of a useful enough voltage on which to do anything. You only need to short that out with a good solder blob from the cathode end of D1 to the bottom of R23 (shows as the top in my image) for your full 12 or 24V input to be applied to the 78M05 and all will be a source of joy. (24V in for 5V out is well within its rating). With that fix applied it's a much happier unit - as am I. If you're able to perform the above surgery it's a good little investment, however if that's not your area of expertise then steer well clear of this device. - G.
bon produit. tout petit il peut se loger sur ou dans un projecteur led classique pour le transformer en projecteur DMX 512. Facile à brancher et à programmer. je suis content de mon achat.
bom e funcionando.
Funciona perfeitamente! As funções incorporadas são ótimas para unidades independentes, mas também funcionaram perfeitamente com o controlador DMX. ótimo valor para o dinheiro.
Bom
good quality
ottimo
yes they work well. Beware of running the full 4amps per channel through them. They will and do melt.
Excelent...
thank you very much for the item