Boost Converter Module for DC-DC Step Up Power with 5V Output Voltage: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 3.7V, 4.2V to 5V Regulator Voltage Boost Converter Board for 0.9-5V to 5V (Pack of 10) Review

As others have pointed out these boards have the wrong 3.3v chip. It will only convert a less than 3.3V source to 3.3V, not 5V as stated in the product description.

3.3v part comes with 5v parts Others have reported the same problem. The order was changed but with the same results, only 3.3 volts with no load, capacitor with only load, or 6mA with load. (0.8 to 1.6 inches)

I used it to boost the voltage of a single cell lipo battery to 5v to power an ESP32 cam module. Worked fine at full power. I didn't have to add a capacitor to smooth the voltage. No visible distortion of the streaming image.

I used this to convert 1.5v from 4 AA batteries to 5v for a DIY USB charger. It worked but I had some problems. After checking my connections with a multimeter, I found that it actually went up to 6V instead of 5V. The USB module, which I only supported up to 5.5V, had to replace the module I was using. I can't say that all will be the case or that my piece is flawed, but keep that in mind if you use this piece.

These are boost converters designed to boost low voltages to a stable 5V. I set them up with a pair of rechargeable AA batteries (2 x 1.2v = 2.4v) and a multimeter. Four boost converters produced a stable voltage of 4.88 to 4.94 volts. This is well within specification for the Arduino Nano and LED to work. They are pretty small. That's cool. I think a block is defective. It creates a connection but doesn't increase the tension; it does not "boost" and is therefore not suitable for this purpose.

It's incredibly small (e.g. Apple AirPod). I used it with a D (1.5V) battery to power the Ardruino Nano. This works pretty well. But when I added a speaker, the DC/DC converter couldn't keep up. I measured the peak current it can deliver as 7mA. That's a little less than the >400mA in the product description! Running the same circuit with a desktop power supply shows a maximum current draw of 14 mA. I tried 4 out of 10 devices, they all had the same limitations. 7mA is quite reasonable for…

Buck converters came in a little white box that said 'DC-DC Step Up Power.rd 0.9-5V to 5V (10) I have hooked it up to a 3.3V source and you were outputting a little over 3.3V, maybe 3.45V. Finally I pulled out my magnifying glass and looked at the IC on the back. I needed the part ending in 50 for the 5v output. It seems to be the manufacturer's fault for putting the 3.3v converters in a box that says "5.0v converters". ". I'm sending them back as the entire batch is probably mislabeled.