Hi,
I am looking for some guidance, I am not electrical guru, but have successfully managed to put the Velleman MK136 mini kit together and it works a treat.
Now, rather than use batteries (3x1.5v), I'd like to wire this up to a USB and connect to my Anker Powercore 20100. As a tester I hooked up a USB and plugged in to the mains and it powers on as expected, but I get a horrible amount of hum/noise.
Does anyone have any clear instruction on how to overcome this? I found some information here on using a DSL filter, but living in the UK, these particular Filters are not available.
I did try and use one of our ADSL filters, traced the relevant wires and hooked up, however, I still got the hum
Any help appreciated.
Cheers.
Darren.