#pms7003

♡ 모두의 아두이노 환경 센서 ♡

Arduino sensors for everyone

http://naver.me/FQahfgX1

‐----‐----------------------------------

아두이노와 센서로 내 건강을 지킬 수 있다!

다양한 환경 센서를 실생활 프로젝트에 응용해보자!

시중에 판매되고 있는 간이측정기도 센서로 값을 측정합니다. 똑같은 센서를 아두이노에 연결하기만 하면 시중 제품보다 더 저렴하고 더 정확한 나만의 측정기를 만들 수 있습니다. 먼저 센서의 사양과 특징을 파악해 적절한 센서를 선택하는 방법, 센서가 동작하는 원리, 센서를 다룰 때 주의해야 할 사항들을 알아봅니다. 그리고 아두이노와 연결하는 방법과 값을 정확히 측정하는 방법을 배웁니다. 간편한 실습 환경과 이 책의 네이버 카페를 제공하여 혼자서도 충분히 18가지 센서를 다뤄볼 수 있게 했습니다.

이 책에서는 #PMS7003 , #GP2Y1010AU0F , #PPD42NS , #SDS011 #미세먼지 #센서,  #DHT22 #온습도 센서, #MHZ19B #이산화탄소 센서, #ZE08CH2O #포름알데히드 센서, #CCS811 #총휘발성유기화합물 #TVOC,  #GDK101 #방사선(감마선) 센서, #MQ131 #오존(#O3) 센서, #MQ7 #일산화탄소, #MICS4514 #이산화질소 센서, #MICS6814 #암모니아 센서, #DGSSO2 #아황산가스(#SO2) 센서, #BME280 #기압센서, #GUVAS12SD #자외선(UV) 센서, #MD0550 #기류 센서, QS-FS01 #풍속센서(Wind speed) 를 사용합니다.

I suceed to build my second sensor. This time it is more expensive. PMS5003 is not analog sensor like Sharp GP2Y1010AU0F.  PMS5003 is laser-based sensor with built in microcontroller that performs all required calculations and sends digital data messages to its TXD pin5. You could use other sensors like  PMS6003,  PMS7003 and even older ones like PMS1003 or PMS3003. They all could be connected in the same way, just pay attention at message length in the source code (If I am not wrong PMS5003/6003/7003 uses 32byte long messages but PMS3003 uses 24bit).

My first workingh prototype was connected to NodeMCU by only 3 wires: +5V, GND and RX. It was enough to activate sensor and start receiving some data on RX line. 

PMS5003 requres +5V but data lines should be connected to 3.3V levels which is used by NodeMCU 

* Be aware if you would like to connect PMS5003 to Arduino you should use 5<=>3.3v logic level converter.

 Also please note that some NodeMCU versions dont support 5V on Vin pin. In my case I have chinese clone LoLin NodeMCU V3 board that has 5V on reserved pins. The simpliest test is to connect power to PMS5003  PIN1 and PIN2 and you should hear a fan noise immediately.

I’ve built my 1st prototype and succesfully programmed using article from DFRobot: https://www.dfrobot.com/wiki/index.php/PM2.5_laser_dust_sensor_SKU:SEN0177

Although their sample code is for Arduino it works fine on NodeMCU too.

Following diagram has some additional pin connected to digital output but it is not requred for prototype. I used it to force PMS5003 to sleep and save a bit power between measurements. I will describe ti in my next post, together with my source code.

Usefull links:

https://www.dfrobot.com/wiki/index.php/PM2.5_laser_dust_sensor_SKU:SEN0177

http://aqicn.org/sensor/pms5003-7003/