3 New ESP32 project ideas on custom PCB boards

In 2016, Espressif Systems introduced ESP32 to the world. Since then, it has become quite popular among project makers. If you are familiar with Arduino, then working on ESP32 becomes easier. ESP32 board comes with Wi-Fi and Bluetooth, which most Arduino boards do not offer. In a nutshell, ESP32 gives you a better performance at a lower price. This article presents you with three new ESP32 project ideas on custom PCB boards.

Walkie-Talkie Audio Board

Assembled circuit of Walkie-talkie ESP32 project
Assembled circuit of Walkie-talkie

Walkie-Talkie is a simple device that transmits and receives your voice in the form of radio waves. Today, everyone prefers mobile phones for communication purposes, but a self-made communication device has its perks. This project requires two separate ESP32 boards to complete a transmitter and receiver pair. After assembling the audio PCB board with other modules, your device is ready to communicate within 5-10 square km or 2-4 square miles.

PCB details

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PCBWay uses high-quality base material that dissipates heat efficiently. The dielectric material quickly absorbs the generated heat and saves vital electronic components over the surface of the PCB board. The thick copper traces ensures a better flow of signals on the surface of the board. With a controlled impedance, the signal quality remains good even in long-range communication.

The image below shows the software design of the PCB board.

PCB designed in software
PCB designed in software

The image below shows the received PCB board after connecting other components.

PCB after connecting other components
PCB after connecting other components

Components Required

ESP32 board
MCP1700-3302E/TO
Capacitors
Inductors
INMP441
MAX98357A

**To know more about the above project, click on the link below,
 Walkie Talkie Audio board

Smart car

Smart car: A ESP32 project
Assembled circuit of Smart car

This ESP32 project guides you to make a powerful smart car on your own. The chassis has four motors with directional odometers that keep track of the vehicle speed and the direction of movement. Four LIDAR sensors continuously measure the distance of nearby objects to prevent any collisions, and the GY-50 gyroscope module helps in easy navigation of the Smart car. With Smart Car shield PCB, it becomes easy to assemble all the circuits in a confined space.

PCB details

The Smart car uses a double-layer PCB from PCBWay with dimensions 77.6×140.3mm and 1.6mm thickness. The HASL surface finish protects the copper from oxidation, thus improving the reliability of the board. The white silkscreen is uniform and does not contain any gaps, which ensure proper placement of components during the assembly of the board.

The image below shows the software design of the PCB board.

PCB designed in software
PCB designed in software

Right here, the image shows the received PCB board after connecting other components.

PCB assembled with other electronic components
PCB assembled with other electronic components

Components Required

ESP32 board
Motors x4
Motor driver
GY-50 gyroscope
Resistors
AA batteries x8
Chassis
Odometers
Sensors

**To know more about the above project, click on the link below,
 Smart Car

Smart Stopwatch

ESP32 project for workout details
OLED display indicating the workout details

Are you a health nut and want to keep track of your workout routine?
Then follow this ESP32 project to reach your goal easily. The smart stopwatch connects to the app on your smartphone via Wi-Fi. The application lets you enter your workout routine, type, sets, reps, and break period. After feeding all the details in the application, the smartwatch gets synchronized. On starting your workout routine, it continuously monitors your exercises and the corresponding time. So you don’t have to worry about burning fewer or unnecessary calories.

PCB details

The PCB board from PCBWay is uniform with no break lines or solder joint repairs. The solder-resist layer is perfect, i.e., neither too thick nor too thin. The PCB is free from dust or any solder-resistant materials. All drill holes, tracks, vias, and other shapes are within specified tolerance limits.

The image below shows the software design of the PCB board.

PCB designed in software
PCB designed in software

The PCB received from PCBWay looks similar to the software design.

Received PCB from PCBWay
Received PCB from PCBWay

Components Required

ESP32 board
Battery charging circuit
Voltage Regulator circuit
OLED display
PCB board from PCBWay

**To know more about the above project, click on the link below,
Smartwatch

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