Communicate wirelessly with a Smart Circuit via a Graphical User Interface (GUI) on your phone or PC.
My idea this week was smart garage door controlled by GUI on phone.
I found a tutorial for a "DIY"ed one for a doll house and decided to do it
Make sure to search for the datasheet of the components before connecting it to know its specifications( safe range of voltage and current intensity and connections)
Circuit Components:
dc geared motor
led light (output)
220 ohm resistor
breadboard and jumper wires
Arduino Uno (brain)
bluetooth module
Arduino IDE
Arduino bluetooth control
1st. we designed the circuit on tinker cad using:
Arduino Uno.
2 220 ohm resistor.
2 led lights(output) on pin 10,11.
DC Motor(output) on pin 9.
then we made the actual circuit with same wiring and components and add the bluetooth module connecte the RX of the module to TX pin of the Arduino and the TX to the RX
so first we had to add character the data coming from the serial read then in the void setup we had to serial begin Notice in Serial.begin() we pass in the value 9600. This is called the baud rate – it sets the speed of the serial communication, and represents bits per second. Both devices must have the same baud rate selected for Serial Communication to work.
then we mention the pins used and its state ether input or output
pin(9) is the dc motor pin
pin(10) for the green led
pin(11) for the red led
the three pins are analog output.
last the void loop
first we make the incomping data character take the serial read from the monitor
then we add the if condition the device have two modes only
1st. the green led and the motor is off and the red is on which is the default.
2nd. the green led and the motor is on and the red is off when the serial read is 1
so we needed only one condition if the serial read is 1 then pins(9,10) are HIGH to turn the components onand pin(11) is low , else pins(9,10) are Low and only pin(11) is high.
then we build the actual circuit and insert the Bluetooth module.
there were something weird with the Bluetooth module it works for a while then it doesn't without changing anything that was weird but we changed it
and then it worked but it keep disconnecting but that was i powered the Arduino with 5v in vin pin which need 9v so that wasn't enough so we connected it to the 5v pin and all is good.
last the arduino didn't accept the code arduino ide starts uploading then it lasts forever or it just show error message, we tested my arduino with different laptop as well as the cable we uninstall the software and reinstalled it but nothing happene then ''Mohamed Rabie'' recommended to instal an older version of the arduino ide(1.8.18) and it worked it was that simple.