Components Required –
Fig. 3: Block Diagram of Particle Photon and Blynk based IOT Weather Monitoring System
Circuit Connections –
Particle Photon – Photon is a popular IOT board available from the Particle platform. The board houses STM32F205 120Mhz ARM Cortex M3 microcontroller and has 1 MB flash memory, 128 Kb RAM and 18 mixed signal general purpose input output (GPIO) pins with advanced peripherals. The module has on-board Cypress BCM43362 Wi-Fi chip for Wi-Fi connectivity and Single band 2.4GHz IEEE 802.11b/g/n for Bluetooth. The board comes equipped with 2 SPI, one I2S, one I2C, one CAN and one USB interface. The particle Photon has the following pin configuration –
The data is displayed on the app in real-time and gets updated in every 2 seconds. Check out the program code to learn how Photon reads temperature and humidity from DHT-11 sensor and send it to the Blynk App.