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ESP8266 and Relay Control Using Smartphone

ESP8266 & SUPLA

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Description

ESP8266 microcontroller start-up to control by smartphone a relay connected to the ESP. In a separate project I will try to present a similar case, but instead of the ESP8266 microcontroller we will use Raspberry PI version B+.

Details

WiFi Socket prototype based on SUPLA and ESP8266

Components

1 × ESP8266-12
1 × FT232RL FTDI 3.3V 5.5V USB to TTL Serial Adapter
1 × ESP8266 PCB Adapter
1 × 3.3/5V powering unit
1 × YwRobot relay module

View all 13 components

Build Instructions

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1
Step 1
What will we need?
1. A smartphone, Android (3.1.x Version or higher) or iPhone iOS 6.1 (or higher).
2. An ESP8266 module version 512KB flash (or higher). This article will cover the ESP8266-12 version
3. A USB-Serial converter to program ESP. I have used the “FT232RL FTDI 3.3V 5.5V USB to TTL Serial Adapter”
4. PCB adapter for ESP
5. 3.3/5V powering unit. I have used the YwRobot module
6. A relay module. For this article I have used version I had close at hand i.e. YwRobot 4 relay.
7. 12V charger.
8. Two (2) LED diodes, one of which must be RGB
9. Two (2) micro-switches
10. One (1) transistor. I have used BC547.
11. Three (3) 100R resistors.
12. Two (2) 10K resistors.
13. One (1) breadboard.
14. Connecting wiring.
15. Piece of a thin wire.
Do not forget to connect the ESP module TXD pin to the USB-Serial converter RXD pin, and the ESP module RXD pin to the USB-Serial converter TXD pin. “IN1” must be connected to the relay module.
2

Step 2

Solder the ESP8266-12 module to the PCB adapter
3

Step 3

With a thin wire make hookups for easier module pin connections.

View all 9 instructions

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