桂花蒸

[Training Camp] Internet of Things Clock +592784A based on esp32-c3

Overview

Goal: Make a simple IoT clock based on ESP32-C3.

1. Power supply circuit

The power supply part uses Micro USB for power supply and uses the AMS1117-3.3V chip to convert 5V to 3.3V.

2.USB to TTL download circuit

The program download part is designed using CH340N. The circuit structure is simple and does not require an external crystal oscillator. Convenient for circuit downloading.

3.ESP32-C3 core circuit

Pin 3 EN is the enable pin and needs to be pulled up.

4.DS1302 clock circuit

Use DS1302 chip to synchronize time.

5. Digital tube circuit

This circuit module uses the MAX7219M digital tube driver chip and uses a common cathode digital tube. Note that when drawing the PCB, pay attention to the location of the digital tube access.

6.LED and button circuit

This part of the circuit includes the circuit's indicator lights. There are also buttons for various functions.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-19 08:50:12

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