ATORCH J7-c
 | |
| Status | planned |
|---|---|
| Source code | [1] |
| Connectivity | serial over Bluetooth, BLE |
| Measurements | voltage, current, power, energy, voltage over USB data lines |
| Features | measures USB devices; color display |
| Website | atorch.aliexpress.com |
What is it?
The ATORCH J7-c is a USB load meter which can measure various properties for USB devices including their voltage, amperage, wattage, resistance, capacity, temperature, data line voltage, and charging mode. It features the following connectors :
- USB-A male ( USB 2.0 only )
- USB-A female ( USB 2.0 only)
- USB-C male
- USB-C female
- USB-microB female
Protocol
The device communicates through serial-over-Bluetooth (RFCOMM), appearing under the UC96_SPP name, and BLE, under the UC96_BLE name. The manufacturer provides an app name "E_Test" for Android and iOS, but no protocol documentation, although it appears that the protocol has been fully reverse-engineered [2]. The same protocol is used both on the BLE and Bluetooth link.
Hardware
A CH573F MCU is responsible for performing all the measurements and managing the user interface. A small SOIC-8 IC ( marking BP0D608-68A2) handles the Bluetooth communication ( both RFCOMM and BLE ).
Board pictures
Top side of the board
Bottom side of the board
