I have the Power Shield for my particle photon. I plugged in a 16v power supply to it and it was making a loud buzzing sound. Is this normal or is my power shield defective. If it is normal would using less power stop the buzzing? thanks.
@affarram, are you supplying a clean (well filtered) 16VDC with enough current to supply the Photon and other hardware you may have?
The Photon powers up and runs. I only have three reed switch door sensors attached to it. I’m not sure what well filtered means. I have a 16VDC power supply that is plugged into an outlet in my basement and it connects via a long wire to the power shield which is located maybe 30ft away.
@affarram, the long wires are an issue. How thick are those wires? How much current can the power supply provide?
You may want to add a 470-1000uF plus a 0.1uF (in parallel) capacitor at the end of those wires, near the photon/power shield to filter any noise from having such wires. Some power supply don’t do well with long wires.
@peekay123 Im using the same power supply that was used with my old ADT system. The wire is a pretty thick gauge. As for the current, Im not sure, it doesn’t state the current, only the voltage. Ill have to find my meter to check it.
Maybe this is a case where a picture is worth a thousand words?
Can you post a picture of the 16V supply? Any labels on it?
I think @peekay123 and I suspect that your power supply is either AC or low-quality DC.
@RWB, nice catch! No wonder the power shield is buzzing!!
@affarram, you need to get a proper DC power supply. If you can’t avoid the long wires then I suggest a 12VDC, 500ma to 1A power supply and I still recommend the filtering capacitors near the Photon/Power shield. If the wires are less than 3 feet, you can do without. In fact, at that point, you could use a good 5v phone charger with a good USB cable.
Yes that is exactly what i have!
Thanks guys! @peekay123 Im going to get a different power supply