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Overload Indication System
1

Components Required

           Products                               Quantity                   Link
  • SPduino                                    1                       Buy Now
  • GSM SIM900                              1                      Buy Now
  • 30A Current Sensor                    1                      
  • 12V Adapter                              1                       Buy Now
  • BO Motor                                   1                      Buy Now
2

Component Specification

GSM Sim900a (Global system of mobile communication)
  1. This module is compatible with SPduino.
  2. Supply voltage range : 3.1 ... 4.8V.
  3. Low power consumption: 1.5mA(sleep mode).
  4. Control via AT commands.
  5. Operation temperature: -40 deg.C to +85 deg.C.


SPduino Board

  • Microcontroller                           : ATmega328
  • Operating Voltage                       : 5V
  • Input Voltage  (recommended )   : 7-12V
  • Input Voltage  (Limits)                : 6-20V

CURRENT SENSOR-30Amp (ACS712)


  • Supply Voltage: 5V Max. 
  • Measuring current: 30 A
  • Sensitivity: 66mV/A
  • Output type: Analogue(0 - 5Volt)

PLASTIC GEARED MOTOR (BO WITH RMC) - L SHAPED (150 RPM)

  • RPM: 150 at 12V
  • Voltage: 2V to 12V
  • Gear: Plastic







     
3

Circuit Connection For the System


Steps:
  1. Connect the TX of GSM to the RX of the SPduino and connect the RX of the GSM the TX of the SPduino.
  2. T1 of the motor is connected to battery +ve and battery -ve is connected to the "INPUT" port of the current sensor .
  3. And the "OUTPUT" port is connect to the T2 of the motor.
  4. Connect the vcc of the current sensor to the 5v.
  5. Connect the output pin of the current sensor to  A0 .
  6. Now connect +ve of the buzzer to 13th pin, +ve of the alert led to the 11th pin and +ve of the indication led to the  10th pin.
  7. Now ground all the devices.
4

Working of the System

  1. As soon as the power supply is given to the motor the current sensor senses the current value.
  2. when there is normal load to the motor only the indication led will be high (i.e green led) .
  3. when  excess load is applied to the motor the current value exceeds the fixed value then alert led glows and the buzzer buzz.
  4. And the GSM module sends a alert message to the owners phone.
5

Sample Program

Sample code
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