Oneself DIY a charging treasure, the drawings are poor, the final welding, copper wire also has, that master taught me, welding, do not burn dissolved aluminum water?
Welding to electric iron, and rosin, solder wire, aluminum wire is not, the first electric iron heat, the solder melted, electric soldering iron with rosin, wipe the copper wire, the solder wire put in copper wire, and then dip the wire with the rosin, solder welding in printing the edition, so slowly operations on OK.
The musical instruments shop is sold and used for grinding erhu stringsSolder paste is OK, but it is caustic, hardware store is sold, do not need this not to solder.
You'd better take the small circuit board off the board, or it will conflict with the circuit above, and will not play the biggest role of the electric board
