[2 Pack] DC-DC 5A Buck Converter 4-38V to 1.25-36V Voltage Regulator High Power Module with LED Display

I bought these units in December and only just got round to using them. I have a supply of 13.5v and both units stop at 13.6v. I can reduce the out put voltage ok with the potentiometer but they will not increase voltage to my required voltage of 18 volts. Both units are acting the same which lead me to believe I may be doing something wrong or they've sent Two defective units. Either way they're just crappy voltage indicators at the moment.EditAnd I'm an idiot. I didn't read the spec properly and thought I could put 12v in and get 18v out. Didn't see the line about input voltage must be higher than output voltage. So the units are great and do what they're shipped to do. I'll find a use for them in the future. Adjusted rating from one to five. I give my reading skills one Star.

It was easy to adjust to the desired output voltage, and easy to connect the wires for both Input and output.Also you can check the output by pressing a small button which swaps between input and output voltages. I also check the output with my DMM, and they were reading exactly the same.

First it works and it seems to buck the input very successfully. I bought two. Both fed from the same 20v laptop brick. One set to output 5 volts, the other 18.5They come with a self adhesive heat sink which will probably help a bit and 4 brass M3x10mm mounting posts. Mounting them to benefit from the additional features is difficult. The display, pot and push buttons are at various heights and several mm below other components on the board. The mounting posts are too short so panel mounting is, at best, awkward. 3D printed enclosures made using the pot, buttons and with light pipes for the 3 indicators and actuators for the buttons a functional enclosure is possible. The 2 buttons are a bit disappointing. One switches off the display. It would be more useful to switch off the output power. The other toggles the display between input and output voltages. It's useful for settings the output. The pot is 50K for anyone who needs a panel control.If anyone would like to 3D print my enclosure design(personal use only) the .stl file is on Thingiverse. Search Enclosure for Buck PSU module on bluetobits page.

Only used one so far but seems to work well, trial and error with the adjustment but once I got used to it the setting was good and seems to accurate enough for my needs

Arrived on time. Well built. Did what was required. In this case I needed a regulator to supply a 12V dc input to a monitor for an Amateur Radio TV Repeater from a bank of Batteries. The voltage from the batteries can reach 14.4V dc off load. The regulator performed the task and was also easy to set up. The Display being an added advantage which can be switched off.

Great Value for small projects, The display is pretty accurate, around 50mv at 5v.

Did the job I needed without issue. Having the ability to monitor input and output in my case was necessary and this dose the trick.

Used to drop 24v li-po battery pack to 12 to run. Lights and usb charger and laptop psu.All built into a power bank box with a boost converter I got aswell to boost vans 12 v upto 28v to charge li-po battery pack with built in bms