EEVblog No Script, No Fear, All Opinion 
Dave takes a quick look at the spectacularly cheap $20 DPS series CC/CV modules from RD Tech.
How to make a 30V 3A bench power supply with 1mA resolution constant current limiting and multi function display using a junk bin enclosure and a junked plugpack or old computer power supply.
The DPS3003 30V 3A module in particular.
Aliexpress Store
Forum HERE
RDtech Youtube channel
Podcast: Download
