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mobile controlled robot via GSM
Transcript of mobile controlled robot via GSM
step by step instruction
1. power supply
12V DC Motor (60 RPM) – 2 nos.
Breadboard – 1 no.
IC L293D – 1 no.
IC CM8870 – 1 no.
IC 7805 – 1 no.
9V Battery – 1 no. (Requires according to the usage)
Plastic Wheels – 2 or 4 nos. (Based on the chassis)
Castor Wheel – 1 no. (Requires only when two wheels are used)
10 µf Capacitors – 2 nos.
0.1 µf Capacitors – 2 nos.
3.58 MHz Oscillator – 1 no.
1K Resistor – 1 no.
100 K Resistor – 2 nos.
300 K Resistor – 1 no.
Universal Headphone Jack – 1 no.
LED – 1 no.
Breadboard Wires – 2 meters
Battery Holder – 1 no.
Battery Snap – 1 no.
Mobile Controlled Robot via GSM
Possible with several Methods
Mobile receiver with
2. IC CM8870 connection
3. IC L293D connection
4. 12V dc motor connection
5. Universal Headphone Jack Connection
IC CM8870 connection
IC L293D connection
12V dc motor connection
Universal Headphone Jack Connection
Take the breadboard and connect the battery holder in horizontal position.
Insert the positive and negative wire of battery snap in holder.
Attach IC 7805 (Voltage Regulator), and place one 10 µF capacitor in IN & GND connection of IC 7805 and other in GND & OUT connection.
Take the positive supply from the battery holder via breadboard wire and place it in IN of IC 7805, and also connect its negative supply in the last row of the breadboard.
Place the GND of IC 7805 in the last row of the breadboard, and transfer its OUT to the first row of the breadboard.
As a result of these connections, +5V power is obtained in the first row of the breadboard.
To check the power flow path, an LED is given a positive supply via 1K Resistor.
Connect 1st & 4th pin of CM8870 (DTMF Receiver) together.
Pick one 100K resistor and place one side of it in 2nd pin and other side to the 0.1 µf capacitor.
Pick another 100K resistor and connect 3rd and 2nd pin.
Provide GND connection to 5th, 6th, and 9th pins.
Couple 7th and 8th pins with 3.58 MHz Oscillator.
Provide +5V supply to 10th and 18th pins.
Take one 300K resistor, and place one side of it to 16th pin and other to 0.1 µf capacitor from 17th pin.
Connect 0.1 µf capacitor to the 18th pin.
Insert IC L293D (Motor Controller) in the breadboard.
Supply +5V power to 1st, 8th, 9th, and 16th pins.
Provide ground connection to 4th, 5th, 12th and 13th pins.
Attach 2nd, 7th, 10th, and 15th pins of L293D to 14th, 13th, 12th, and 11th pins of IC CM8870 respectively.
Take the wire of Right Motor and insert it in 3rd and 6th pins of IC L293D.
Also, place the wire of Left Motor in 11th and 14th pins of IC L293D.
There are three different layers in Universal Headphone Jack such as a Sleeve, Tip, and Ring.
A closer view of the three layers is shown in the circuit diagram clearly.
Connect the sleeve to the output of 0.1 µf capacitor (2nd pin) in the IC CM8870.
Provide GND connection to the tip and ring
Block Diagram OF INTERFACE
circuit diagram of mobile