Introduction: Auto Test Pen With Double Function
Hello, friends.
Today we are going to do here is a probe car. It has two functions, namely - a show contact with the car body, as well as the presence of a voltage of 12 volts.
Detailed assembly and demonstration work can be seen on the video.
Step 1:
We need
- Syringe 5 cubes;
- 4 LR44 batteries;
- Two LEDs with a resistor;
- A piece of steel wire;
- Wire with a clip at the end;
Step 2: Very Simple Scheme
Step 3: Oppositely Connect Two LEDs
Step 4: Solder Resistor, Steel Wire, and Fill It With Hot Glue
Step 5: Bend the Contact and Put Into a Syringe
Step 6: Put the Battery
All is ready.
Detailed assembly and demonstration work can be seen on the video.
Thank you for attention.