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ESP8266 is a great chip. It's only quirk is that it has less available pins.
About the using a op-amp with the gas sensor, that was available in the sensor module i used. We can set a reference voltage point on the module itself. It triggers a 5v output if the analog value goes above the reference point. But then again i have other ideas for this project. Like interfacing a keyboard for passcode etc. So i plan on using a Arduino mega instead of the atmega328.
Yeah sure. This can be done with a standalone esp8266 but the esp has just one 1v analog input. So with future expansion in mind in thought it was better to add external microcontroller.
Home Security System Using ...View Instructable »
Please check the SPI connections. If they are correct maybe the module is not working. Also select the correct com port.
Welcome to Arduino
i had added the code previously but i dont know why it disappeared from here. I have added it again in the software step.
Beginner's guide to ESP8266 and tweeting using ESP8266
Twitter controlled Arduino Outputs - no PC - LCD Display + Sensor data to Twitter
Thermo-electric battery charger
Getting Started With Python and API With Bolt Iot Platform
Smart Watering System
if you have used an Arduino why use an fpga board?
Arduino + MFRC522 RFID READER
im going to use a stepper to open/close a door latch. will post it soon.
Arduino + MFRC522 RFID READERView Instructable »
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