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Solar Motor Robot Circuit

This Solar Motor Robot Circuit run by sun with no battery needed.

It uses special circuit called “solar engine” which works good with small solar panel.

Robot can move even when sky is cloudy.

Circuit Working:

Parts List:

CategoryComponentQuantity
Resistors (All resistors are 1/4 watt unless specified)100k1
1M1
10k1
390Ω1
470k3
CapacitorsCeramic 47nF1
Electrolytic 4700µF 25V1
SemiconductorsTransistor BC5472
Transistor BC5571
Transistor 2N29051
LED Green 5mm, 20mA1
DC Motor 3V1
Solar Panel 3V1

This simple circuit like tiny solar power plant for robot.

It take light and stores energy and then release in small bursts to run motor, coil or other parts.

Solar engine can release power based on voltage, time or how fast energy come in.

People call it “relaxation oscillator” which is like robots energy heart.

Think like small energy bank which saves little power from solar panel and then uses it for short action.

Robot can work even with low sunlight.

This version is smarter and it uses 2 transistors to keep power ON until voltage drop to 1.5V.

Old one stop at 2.8V so this new design gives motor more energy from capacitor.

More power means more push!

Formulas:

Making a relaxation oscillator solar engine means building a circuit that charge a capacitor with sun power which then releases it to make pulses means oscillations.

Formula for timing (T):

T = 0.693 × R × C

To get good result for our robot or project we need to test and adjust based on use and weather.

How to Build:

To build a Solar Motor Robot Circuit we need to follow the below mentioned connections steps:

Note:

Conclusion:

This Solar Motor Robot Circuit is good for beginners and is simple design with few parts.

It work even in weak sunlight and is great for learning or fun solar bots!

References:

Automatic Solar Tracker Robot

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