Flood surveillance system

Other Hardware General Electronics
1

Here are the components for my Flood Surveillance System. Help me to create a schematic diagram for this
• Arduino Uno (5V) • Ultrasonic Water Level Sensor (HC-SR04) - 5V • GSM Module (SIM900A) • Solar Panel (12V, 10W) • Charge Controller (TP4056) - Input 12V, Output suitable for the battery voltage • Rechargeable Battery (3.7V, 18650) • Voltage Regulator (LM7805) - Output 5V • Breadboard and Jumper Wires • Weatherproof Enclosure

2

Which schematic capture programs are you familiar with?

3

You can draw it on pencil and paper

Or are you actually sking someone to provide you with a complete schematic ?

1 Like
4

You will likely need an over-discharge protection circuit for this. Some tp4056 modules have over-discharge protection circuit built in, but others do not.

A few 18650 Li-ion batteries have an over-discharge circuit built in, but most do not. On the batteries with protection built-in, you normally see a metallic strip along the side of the battery, and a module around 1mm thick and the same diameter as the battery, at the -ve end of the battery.

5

To create a schematic diagram for your Flood Surveillance System, you can use a tool like Fritzing or draw it manually. Below is a simplified schematic diagram:

sqlCopy code

          +------------------ Arduino Uno (5V) ------------------+
          |                                                      |
          |                                                      |
          |    +---------+    +-----------+    +---------+       |
          |    |         |    |           |    |         |       |
          +----| VCC     |----| VCC       |----| VCC     |-------+
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               |         |    |           |    |         |
               +---------+    +-----------+    +---------+
                  HC-SR04         SIM900A         TP4056
              Ultrasonic Sensor    GSM Module   Charge Controller

This is a basic schematic layout. You can connect the components based on their functionalities and requirements.

Here are some general guidelines for connection:

  1. Connect the VCC pin of each component to the 5V output of the Arduino Uno.
  2. Connect the GND (Ground) pin of each component to the GND (Ground) pin of the Arduino Uno.
  3. Use the LM7805 voltage regulator to regulate the 12V output of the solar panel to 5V for the Arduino Uno and other 5V components.
  4. Connect the output of the LM7805 voltage regulator to the 5V pin of the Arduino Uno.
  5. Connect the rechargeable battery to the input of the TP4056 charge controller.
  6. Connect the output of the TP4056 charge controller to the rechargeable battery.
  7. Ensure that the connections are made securely using jumper wires and the breadboard.
  8. Place all components inside the weatherproof enclosure to protect them from external elements.

This is a basic schematic layout. You may need to add additional components or modify the connections based on your specific requirements and the datasheets of the components you are using. Additionally, consider including appropriate protection circuits (such as overvoltage protection) for sensitive components like the Arduino Uno and GSM module.

6

This panel has too high a voltage and will damage the tp4056 and the battery. Choose a 6V panel.

If you must use a 12V panel, you need a tp5100 charge controller and, a 7.4V battery and a buck converter to reduce the voltage for the Arduino circuit in an efficient way.

7

This will not be able to produce 5V from a 3.7V battery input! You need at least 6.5V input to produce 5V output using a linear regulator. Even if you have enough input voltage, linear regulators are inefficient and will waste much battery power. You could use a boost converter module.

8

For 3.7V battery circuits, a 3.3V Arduino world be more efficient and have longer battery life.

Choose other components which are also 3.3V compatible. There are sensors very similar to SR-04 which are 3.3V compatible, and maybe even some SR-04 sensors which are 3.3V compatible.

9

These are suitable for building a prototype circuit on the bench, which I recommend you do. But for deployment in the field, you need to solder the components up on a PCB or protoboard/stripboard.

10

There are many errors in the components listed. I would like to ask for help in correcting the necessary components. Cuz this is also my first time creating an Arduino-related project :sweat_smile:

11

I would begin by looking for a SIM900 module and an SR04 sensor which can be powered with 3.3V. If you can find those, I would choose a 3.3V Arduino like Pro Mini or Pro Micro so that you can have your whole circuit running at 3.3V. This way, you will not need a buck or boost converter to provide power. Your 3.7V battery can power everything through a low drop out linear regulator. This is usually the most efficient way to power a circuit which will spend most of its time in sleep mode, waking every few minutes to take a reading and, if all is well, returning to sleep. This way, your circuit will use only a small amount of power, so you will need only a small solar panel.

Another advantage of Pro Mini and Pro Micro is that (unlike Uno, with it's unique form factor) you can build your prototype on breadboard and then, when complete and tested, solder the circuit onto protoboard/stripboard for the final version.

12

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