If you have an extra external battery lying around, you can make a useful thing out of it. The author has accumulated several of these batteries. The first thing, with their use, the author decided to make was a mini-electric screwdriver.
Let's watch a short video
To build such a tool, the master needed the following
Materials and tools:
-External battery;
-Set of interchangeable screwdrivers;
-USB-A connector;
-N20 engine with gear;
-Collet;
-Switch 3-position;
-Screws;
Coupling;
- Pliers;
-Screwdriver;
Step One: The Case
It prints a case on a 3D printer. Link to files below.
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With no access to a 3D printer, you can come up with your own case.
Step Two: Screwdriver
From a screwdriver bites off a tip with a socket for bits.
Step Three: Engine
The master engine used the N20 with a 1: 298 gearbox. A clutch connects the tip of the screwdriver to the motor shaft.
Step Four: Soldering
Next, the master solders the switch, motor and USB-A connector into one circuit. The switch has three positions: forward-off-backward.
Step Five: Build
Collects an electric screwdriver.
All is ready. It remains to connect an external battery. If the battery is large, you can connect it through an extension cord. If there is no external battery, you can try connecting to the device’s USB connector.
