Quote:
Originally Posted by Medusa Box  Hello.
2.9V and 2.8V - are the same pins, just on some pinout pictures it is signed as 2.9V. You shouldn't use external power source! This can damage connected device!
You should use Auto settings. As I see on your screenshot, You've set Voltage level to 3.0V - this is too high value for this device! Note, You can damage the device by setting higher voltage, than necessary!.
This is OK, in your Box revision red LED was soldered instead of green.
Also, as I see from your photo, eMMC wires are too long. For stable connection You need to solder each wire as short as possible (max. 3-5 CM length).
Also here are a few main possible reasons why the device not connected:
1. You have connected battery or USB cable. Before connecting the device You must disconnect the battery and the USB cable, and then connect the device without power, this is important!
2. Some wires are soldered incorrectly. Carefully check soldering of all wires.
3. In the process of soldering, the resistors were burned (damaged) by using soldering iron or the pin pads on the board to which wires were soldered were damaged. Need replace damaged resistors and restore the pin pads on the board.
4. The ends of wires that were soldered, had not been cleared. Wire, that comes complete with Medusa Pro Box, is covered with an insulator, so before soldering need to clean the ends of each wire.
5. Soldered wires are too long. Make each wire as short as possible (3-5 CM length).
6. For GND connection use more thicker wire.
Check all of them and try to connect the device again. |
Hi
thanks for answers
i check all wires . also check connections with multimeter and all was connected without any problem to the small green board !
but still no connection with the box ! i have also shortened all wires to 3.5 CM