DROK Buck Boost Voltage Regulator, DROK DC 6-30V to DC 0.5-30V 5V 12V 24V Adjustable Voltage Converter, 4A 60W Power Supply Step Up Down Transformer Board Module with USB Port Case LCD Display Volt Am

Input voltage 12 volts DC. Output voltage 30 volts DC. Works great and it is stable. Writing this review with the Mini!! Powered by 4 Headway batteries.

I really like these converter, I bought 1 and ended buying another. I use 1 to step 12v to 5v for usb and the other to step down 12v to 8v for a Kenwood HT radio, these work great you can monitor input and output voltage and current. Just adjust the pot to change voltage and amperage output. Note for usb the output voltage must be set to 5v and is not independent of the other output.

I installed it in the same box as a low voltage motor controller for my DC ceiling fan. If the terminal connections were more substantial I would give it five stars. 16 gauge wire seems max, and that was tight. Easy to adjust and it's been working well. I like it.

This power converter is super easy to configure and use. Extended the power for a wall mounted tablet more than 50 feet.

I built a barn door style equatorial mount to photograph the 2024 eclipse. I used this to regulate the voltage from an 8 AA battery pack to a 12VDC 3RPM motor. I used a 20T pinion gear on the motor drive and a 54T drive gear to move the mount. By dropping the voltage down from 12v to 10.7v, I achieved 1RPM on my drive gear which was spot on. As the batteries depleted, this little guy kept my output quite steady. As a precaution, I mounted a 40mm fan on the back. I just spliced it in to the input side. As a suggestion for DROK, a header to plug a fan in on the PCB would have been a nice extra. I am very pleased with the way this product works.

I couldn't find how to turn USB mode on. Setting the voltage first was understood, but the manual doesn't clearly state you have to press the ENT button then to enter the USB charge mode, powering the port (after verifying output voltage is set to 5.1V or so). Manual just says press ENT to "save and exit," and this appears in the "Display Description & Setting" section.The USB indicator will then light and show current output. Subsequent ENT pressings toggle the LCD backlight on/off. To toggle off USB mode, remove input power or press SET again (which changes display mode) followed by an ENT press. After figuring all this out, the manual is mostly correct but not very clear.

Have used these several times, do NOT trust the potentiometer to hold the voltage you set it to. In its latest application it destroyed an expensive camera about an hour into its use by letting a 5v circuit become a 12v and frying its internals. They often fail if your current draw is over 2 amps as well.Junk, especially for the price.

My unit is working with a little workaround, potentiometers must be held down / pressed with a tape with the upper top acrylic piece otherwise output power lowers to the input level (or starts going crazy up and down until it is pressed)

Nos ha funcionado muy bien

It is very good Thanks

Works with the Pi4 for me using the right 12v input, its just a shame the USB cant be automatily on after a power cycle,

Drok製品の購入はDC電源に続き２点目です。水素燃料電池発電器の降圧用に既に1年半使用しています。電圧の安定度、電圧、電流表示の精度いずれも良く良い買い物でした。

Arrived on time and in good condition. Well wrapped/protected.