Massive 10-out USB charger with LRS-50-5 power supply
thingiverse
This is my approach against cheap individual power adapters. Brand-new power supply from MeanWell; LRS-50-5, which means a whopping 10 amps at 5 volts! This industrial-grade power supply is designed to be mounted in a housing that meets strict compliance standards. My stand for it is for sure VDE compliant, but with live screw connectors safely enclosed - a lot more secure than exposed ones. Be cautious: US use at your own risk! Follow the rules included in the instructions that come with the power supply to ensure safe operation. The 5 volts go straight into the USB housing. If you search eBay for "USB breakout," you'll find plenty of sockets for a low cost - the housing can accommodate ten of them. There's a slot at the back where you can easily push it in; I soldered all ten in parallel. Once pushed in, I secured them with hot glue. In summary: compact and under 25 euros!
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