This is just a short follow-up on the e-paper display video. It was brought to my attention by one of the viewers that banggood is shipping the bare display instead of the module as whole display + pcb + cable.
Welcome to a new voltlog, in a previous video I showed these C5W LED bulbs that I got from ebay they were very cheap so I put them to a test and discovered they reached very high temperature in just 15 mins of running in free air which got me concerned, the fixture of this bulb could melt.
So I guess a gadget like this is worth 10$ because you could replace that linear breadboard power supply with a more efficient one, which will give you voltage and current display as well as adjustable output.
Here are some images I took during the teardown of the mini power supply:
today we are taking a look at the UNIT UT211B clamp meter it can do both AC and DC measurement and it has 1mA resolution on DC measurements and 0.1mA on AC. We’re also going to take a look at the DANIU P1600D test lead kit which has a bunch of accessories that might be useful.