Pack of 9 UCEC MB102 3.3V/5V Power Supply Module for Arduino Nano Solderless Breadboard - Enhanced SEO Review

Some reviews say these outputs are 12 volts, I've tested each with my Fluke meter that is not breadboard mounted. The first two tested well, 3.27 and 4.99 volts at the breadboard pins. With the jumpers set to 5 volts, I checked the top pins of the power button on the third board and oops! I accidentally closed the 5 volt contacts and the output immediately became +12 volts. Until I know why The next board passed the test normally and the last board I intentionally shorted out and it got back to

Good idea but extremely poor execution. There are no positive aspects at all. Here are my observations: - 2 of them broke at the off buttons right out of the box. - 1 of them died after using the light for about 4 hours. I understood what was happening. The other 2 are in the trash where they belong. find something better

6 units received on time and in good condition. The boards must be carefully separated. (a minor inconvenience considering the price) At a battery rating of 8.2V they showed an AC ripple of 1-2mV. On the 5V sections, the average voltage was just under 5V at 4.98V (no load), which dropped to about 4.87V at a 500mA load. The 3V sections were about 3.24V. The push button power switch should pull back slightly when pressed to lock in position. (not super intuitive) For simple hobby projects, that's

These are really practical plug-in power supplies. Removing breadboards can even be useful offline. The selectable dual voltage is handy, and while the regulator output isn't perfect, it's more than enough. I measured the 3.3V line at 3.23V. An installation note: make sure you attach it to the breadboard so it aligns properly with the power lines. Otherwise, you'll have to remember that they're swapped, or move your circuit around (if you built the circuit before adding the power supply and…

The first board I tried smoked the 5V regulator right away. I had a jumper for 5v on one side and 3.3v on the other side. Neither of them had a load! I used a 7.5V DC wall wort for power. As I looked at the board, I noticed a large blob of flux? on one of the passages at the bottom of the panel. After checking the rest of the boards I found a lot of flux around the pins. I cleaned them all thoroughly and turned them on with no further problems. For the price I'm not too dissatisfied but their…