AZDelivery XL4015 Voltage Transformer DC-DC Step Down Module 5A 8V - 36V to 1.25V - 32V compatible with Arduino Including E-Book!

I got caught out when I built a 5V supply to run a Raspberry Pi 5 from 6 NiMH AA cells. It worked, but only while the cells were near full charge, so I had to shoehorn two more cells into the case - looking up the i.c. spec sheet it does say the minimum Vin - Vout is 1.8V, so my fault, but the module data could be a little clearer. That sorted it worked very well, and stopped all the "undervoltage detected" warning messages thrown up when using a mains adaptor.Mounting screw holes are miniscule, great if you're a Swiss watch maker, otherwise not so much - seriously, would making the pcb a couple of mm bigger to enable M3 hardware cost so much? I've finished up gluing these down, rather than trying to source M1.6 screws.

Delivery was faster than expected. The unit has a useful input supply range 8v-36v an therefore can be used with various different power supplies. The output voltage and current limits are easy to adjust and they are stable in use.Unusually AZDelivery provide access to eBooks giving clear information about each of their boards and suggestions for their use. This is a real advantage as most suppliers usually supply only basic information, if at all.

The modules delivered were not like the ones pictured in the listing. The ones delivered were a similar size but have two pots (one to adjust voltage and another to adjust current limiting) and did not come with a heat sink for the regulator. Works ok though and the current limiting feature is a bonus.

Great value easy to use simple to set up.Would recommend

pic is to help as does not come with anything in box

This is what arrives.If you're pushing any kind of amps from it, it WILL need a heat sink.