A first look at the black version of the YZXstudio USB power monitor, which features an 18-bit analogue to digital converter for precise voltage measurement.
http://www.ebay.com/itm/USB-2-0-Power-Monitor-Black-YZXstudio-18-Bit-Voltage-Current-Meter-OLED-/201397906943
http://www.ebay.com/itm/Bluetooth-Module-UART-Serial-Interface-SPP-CA-works-with-YZXstudio-USB-Monitors-/201414967094
http://www.ebay.com/itm/USB-2-0-Power-Monitor-Black-YZXstudio-18-Bit-Voltage-Current-Meter-OLED-/201397906943
http://www.ebay.com/itm/Bluetooth-Module-UART-Serial-Interface-SPP-CA-works-with-YZXstudio-USB-Monitors-/201414967094
cheap precise external ADCs are not rare. They are just slow. This one is only 3.75 samples/s at the cost 0.5US while the real 18bit ADC which can handle 100-200-300k SPS would cost the price of this USB device or more.. So Frank is selling a quite expensive firmware here..
so which Bluetooth terminal is being used here? and yes I know there are lots on play store, but its mentioned same one that franky uses…….so whats the name of it?? Thanks
Each port will have its own current control circuitry (USB has a protocol to switch current limits for a device, which may be different for each port) so the voltages are not from a parallel voltage source and it may well show different voltages.
I have had a problem with these type of testers. The USB plug tends to wear out and connection is lost making them useless. I would rather have one that uses a replaceable cord. I have thrown away two of these so far.
It's nice to finally put a face to your voice!
I like the idea of many in postbag, reviewed latter in detail!
i dont think anyone else has picked up on this, maybe im missing something…. I love the idea of these power monitors, but i believe the bluetooth is a bit underdeveloped! why hasnt yzx studios created an app for this? i believe it would be relatively cheap for them to do, and could log full length voltage/current graphs (more accurately too), save data to your device, and maybe even do things such as turn the output on and off, change the state of the D+ and D- pins to allow for other devices… all through bluetooth! I love the idea of this as i say, but it needs work. anyone have any thoughts?
I prefer this format:
Postbag: All post opened and looked at briefly.
Then you can have other videos where you go into deep
I too have received excellent feedback from Franky Tong. I am not as fluent in electronics as as Julian llettt but never the less Franky Tong has made me a solid customer based on his service and help. 🙂
nice sweater, merino?
Julian and Mjlorton name is mentioned on ebay this product description 🙂
This is only current/voltage meter that i know of on Ebay that has PC connectivity and data logging at reasonable price.