EasyEDA User circuitdigest
circuitdigest
Public Project: 14 Footprint Package: 3 Likes: 0 Favorites: 0 Views: 863

Smoke Detector Arduino Shield

1 year ago  

Status: Complete

Arduino Shield, Smoke Detector PCB Layout, Smoke Detector Circuit
Fork
Open in Editor

This Smoke Detector Circuit sense the smoke in the air and displays the level of smoke in PPM (parts per million) on LCD display. This circuit triggers the Buzzer when Smoke level becomes higher than 1000 ppm, this threshold value can be changed in the code according to the requirement. This circuit mainly uses MQ2 Smoke/Gas sensor and Arduino to detect and calculate the level of smoke. MQ2 gas sensor is also sensible to LPG, Alcohol, and Methane etc.

In the schematic diagram, we have a comparator circuit for comparing output voltage of smoke sensor with preset voltage (output connected at pin D7). Also smoke sensor output is connected at an analog pin of Arduino (A0). Buzzer is connected at Pin D9. And LCD connections are same as Arduino LCD examples that are available in Arduino IDE (12, 11, 5, 4, 3, 2). Remaining connections are shown in the circuit diagram.

For the complete DIY project and step by step guide to build this project, check out the project page on circuit digest.

MQ2 Smoke Detector Arduino Shield Circuit

MQ2 Smoke Detector Arduino Shield Circuit

MQ2 Smoke Detector Arduino Shield

MQ2 Smoke Detector Arduino Shield

BOM

IDValueQty.PackageComponentsManufacturer PartSupplierSeeedStudio
1ARDUINO_R3_SHIELD1UNO_R3_SHIELDJ1
2LCD-16X21LCD-16X2U1
310k2TRIM_POT_PTHR1,R3
41k4R1206R2,R4,R5,R7RC1206FR-071RLSeeedStudio301010433
5LM3581DIP8U2
6P125-1103A0BS116A11H3-2.54J2P125-1103A0BS116A1SeeedStudio320020038
719-217-R6C-AL1M2VY-3T2Seeed-LED-0603D1,D219-217-R6C-AL1M2VY-3TSeeedStudio304090042
8Smoke Module1H4-2.54J3F185-1104A1BSYA1SeeedStudio320030017
9Smoke_SENSOR1MQ-3U3
10BUZZER1BUZZER-12MMSG1
11BC5471Seeed-SOT-23U4MMBT3904LT1GSeeedStudio305010013
1210k2R1206R6,R8RC1206FR-071RLSeeedStudio301010433

Comments

Add Comment
你现在访问的是EasyEDA海外版,不推荐使用,我们已经建立访问速度更快的中国区数据中心 https://LCEDA.cn
如果你已经有EasyEDA账号,请使用谷歌浏览器访问 https://easyeda.com/applyForLceda 进行数据迁移到中国区数据中心。
有问题联系QQ 3001956291 不再提醒