MicroUSB currency/voltage meter - Page 1
Forum section: electronics / general

author: TheGrave
author_rank: Contributor
timestamp: February 06, 2019, 04:49:11 pm
content: Hi,I'm looking for an (ideally) 2-in-1 device that can show voltage and currency on a MicroUSB cable. For the micro side this looks promising:https://www.mobilefun.co.uk/micro-usb-power-current-voltage-detector-50100Discontinued, unfortunately.For the regular size USB connector a couple of interesting suggestions (some of the products are updated to support USBv3 already) here:https://www.pretzellogix.net/2015/04/20/the-portable-led-usb-multimeter-that-you-didnt-know-you-needed/The idea is to check the gazillion adapters and cables laying around and throw out those that are out of specs.Suggestions to destroy things like USB extenders and take measurements from them are not welcomeFirst they are too long and currency drop will be significant on the MicroUSB side and second this must be a portable solution that will get some beating being carried in a backpack.

author: soldar
author_rank: Super Contributor
timestamp: February 06, 2019, 05:11:16 pm
content: I just bought about half dozen of different USB current and voltage meters on eBay for close to nothing. I don't know how the even pay for the shipping, never mind the item.They are all regular USB connectors but you can get adapters, also on eBay, for close to nothing.

author: TheGrave
author_rank: Contributor
timestamp: February 06, 2019, 11:17:26 pm
content: This looks promising, good reviews too:https://www.amazon.de/gp/product/B07G15TX2N/ref=ox_sc_act_title_2?smid=A3NT2QO2RZR9F8&psc=1Kinda expensive though but they have multiple versions.Seems like you can test the MicroUSB plug with this gadget too.

author: malagas_on_fire
author_rank: Frequent Contributor
timestamp: February 06, 2019, 11:46:38 pm
content: Here is a quick search that should give some usb testers with micro USB plugs inputs, it implies a second cable to do the job :https://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=usb+tester&rt=nc&LH_PrefLoc=0

author: kjr18
author_rank: Regular Contributor
timestamp: February 07, 2019, 05:32:16 pm
content: If you need it for checking usb cables and power adapters,UM24might be enough to do it, not very expensive, but it has almost everything you need. Shows voltage, current, power. With it you can even check resistance of usb leads. The only other thing you need is something like15W constant current load.I know there are other cheaper meters, they will also measure and show some of functions that UM24 has, but they might be slightly inaccurate.Here I found video about this cable testing function

author: amyk
author_rank: Super Contributor
timestamp: February 08, 2019, 02:48:52 am
content: Do you want units of USD, Euro, or Chinese RMB?

author: TheGrave
author_rank: Contributor
timestamp: February 20, 2019, 09:24:11 am
content: Plenty of garbage on eBay but I found this excellent blog with reviews of such meters:https://usbchargingblog.wordpress.comUM25C (an upgraded version of UM24) seems to be one of the better options but I'm still going through the pages to see if something more interesting will come up.