I'm using a hall effect current module to measure the current and AH consumption of a pair of LED lights and fan on our trailer tent. It's a bit of overkill, but I'm doing it to avoid running the car battery too low.
It worked OK running the LED lighting directly, but when I installed a couple of wireless controllers to remotely control on/off and dimming the lights I encountered problems.
The problem is that with the hall effect device in series, the controllers don't work and remain on at full brightness. Also the fan doesn't work. If I remove the hall effect device, all works as it should.
I'm puzzled! The hall effect device shouldn't affect the current flowing through it - but it appears to be. I'm running the device well within its ratings .
This is the dimmer for the lights: http://www.ebay.co.uk/itm/12V-24V-8A-LED-Wireless-Dimmer-RF-Remote-Controller-for-Led-Strip-Lamp-Light-New-/261288063384?pt=UK_Home_Garden_Lighting_Parts&hash=item3cd5fb7198
This is the hall effect module: http://www.ebay.co.uk/itm/ACS712-current-sensor-module-5A-range-arduino-PIC-LONDON-CITY-UK-FREE-POST-/121182465805?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item1c3709af0d
Any ideas as to what the problem might be, please?