石榴姐

[Tuya Smart] Gas alarm device

Overview

This is a WR3S gas alarm device based on the Tuya module. The gas detection part uses the MQ-5 module for detection, and is equipped with a 0.96-inch OLED display to display relevant data. Since the MQ-5 module only leads to the relevant MCU pins, you can also replace other modules in the MQ series according to your own needs, and it is compatible with most 4-pin modules.
Functions currently implemented: Use a lighter to ignite and blow out simulated gas. When gas is detected, the buzzer sounds an alarm and is displayed on the Tuya APP. Since only one button and one LED light are designed, this button is used to switch between smart mode and AP mode, and the LED lights flash quickly and slowly respectively.
(Currently, the display part cannot be made, and I don’t understand the part about measuring the analog pins of the MQ series module corresponding to the gas value. There are also some data sending and receiving in the Tuya module that I don’t understand. I will improve it a little later when I have time)

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

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.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-19 20:08:41

When using the function of a module in STM32 chip, in addition to setting the clock or other parameters, is it necessary to set the power supply?
When using the function of a module in STM32 chip, in addition to setting the clock or other parameters, is it necessary to set the power supply?
PCB single panel
Has anyone made a single-sided PCB and can share some experience? I am now making a single-sided PCB for an electronic ballast. It is 160*16MM, very narrow, and the wiring is not easy to lay.
Is there anyone who can sell AX5043?
I am in Shenzhen. If you have an agent please contact me.
Printer classification
How to use the program to distinguish between physical printers and virtual printers
Share AD9, AD13 software, components, examples, classic videos
Baidu Cloud link: [url=http://pan.baidu.com/share/link?shareid=3959841804&uk=3540579070%5C%22+target=%5C%22_b lank][color=#0066cc]http://pan.baidu.com/share/link?shareid=3959841804&uk=3540579070[/colo
In a circuit powered by a DC voltage source, three capacitors are connected in series and in parallel. What is the final voltage distribution?
[i=s]This post was last edited by Shenzhen Xiaohua on 2022-4-20 18:42[/i]In a circuit powered by a 10V DC voltage source, there are three capacitors C1: 6nF C2: 2nF C3: 4nF. C2 and C3 are connected in

Datasheet More

Circuits More