khoan mini chạy pin 7V4 2200mA, khoan mạch in liên tục được 1h. Linh kiện dễ kiếm dễ làm và độ chính xác cao, bà con nhào vô hưởng ứng nào.
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini2.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini1.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini7.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini6.jpg)
công tắc đảo chiều quay motor
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini5.jpg)
điều tốc chỉnh tốc độ
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini4.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini2.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini1.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini7.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini6.jpg)
công tắc đảo chiều quay motor
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini5.jpg)
điều tốc chỉnh tốc độ
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini4.jpg)
![](http://i393.photobucket.com/albums/pp19/thanhbinh_013/khoanmini3.jpg)
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