Differences

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--- web-u2 [2019/09/09 10:28] – add resources kingkevin
+++ web-u2 [2019/09/09 11:21] – [Resources] kingkevin
@@ Line 1: / Line 1: @@
 The U2 is a USB power meter and tester.
+{{:u2:qway-u2p_device_front.jpg?0x200|}}
+{{:u2:qway-u2p_device_back.jpg?0x200|}}
 ===== Overview =====
@@ Line 32: / Line 35: @@
   * [[http://www.witrn.com/witrn/u2/U2_Firmware.zip|Firmware]]
-There is also this thorough [[https://mysku.ru/blog/aliexpress/67123.html|review]] with a lot of information in the comments.
+There is also this thorough [[https://diykitsblog.com/obzory-i-testy/u2-usb-tester-witrn.html|review]] and [[https://mysku.ru/blog/aliexpress/67123.html|another]] with a lot of information in the comments.
 ===== Hardware =====
-There are several slightly different versions of the hardware, with confusing names.
+There are several versions of the hardware.
-I will us the names I can read on the device itself to identify them.
-==== WEB-U2 ====
+==== WITRN U2 104083 ====
 This is the first device I bought from the [[https://www.aliexpress.com/store/2022043|HiDANCE store]], and seems to be a [[https://usbchargingblog.wordpress.com/2019/03/09/alert-fake-u2-upms-have-quietly-entered-the-market/|clone]].
+{{:u2:web-u2_device_top.jpg?0x200|}}
+{{:u2:web-u2_device_bottom.jpg?0x200|}}
+{{:u2:web-u2_middle_bottom.jpg?0x200|}}
 The original manufacturer blocked this device.
@@ Line 50: / Line 56: @@
 This device can still be used to measure voltage and current, but since there is no update anymore it will not be able to be used to detect charger profiles.
+I read out the FRAM (where the settings are stored) but did not find the serial number in there.
+I also cleared it to confirm the serial is not stored in the FRAM, but in the firmware.
+Sadly the firmware is read protected.
+There is also a footprint for an Bluetooth adapter behind the screen, but it was not placed yet (the software was probably not ready).
+{{:u2:web-u2_middle_top.jpg?0x150|}}
+==== WITRN U2 V2.0 ====
+Because the clone was bricked, I got a genuine replacement.
+{{:u2:witrn-u2_device_front.jpg?0x200|}}
+{{:u2:witrn-u2_device_back.jpg?0x200|}}
+{{:u2:witrn-u2_board-middle_back.jpg?0x200|}}
+A Bluetooth module could be placed on the front side of the bottom board.
+The front board could also be light bz LEDs from the back side.
+{{:u2:witrn-u2_board-bottom_front.jpg?0x150|}}
+{{:u2:witrn-u2_board-top_back.jpg?0x150|}}
+==== Qway U2p ====
+The U2p version is a variant of the U2 with 4 button instead of 2, and a switch to enable Power Delivery probing
+{{:u2:qway-u2p_device_front.jpg?0x200|}}
+{{:u2:qway-u2p_device_back.jpg?0x200|}}
+{{:u2:qway-u2p_middle_back.jpg?0x200|}}
+Finally it was also possible to get a version with Bluetooth and some light next to the USB input (not sure when it is on though)
+{{:u2:qway-u2p_bottom_front.jpg?0x150|}}
+{{:u2:qway-u2p_top_back.jpg?0x150|}}
 ===== Software =====