SPECIFICATIONS

Application: Computer

Brand Name: Gaqqee

Choice: yes

Condition: New

Dissipation Power: Low Power Consumption

High-concerned chemical: none

Operating Temperature: Details Page

Origin: Mainland China

Package: TQFP

Quantity: 1

Supply Voltage: Details Page

Type: Relay

is_customized: Yes

Product Features:

1. On-board mature and stable ESP-12F WiFi module with large-capacity 4MB FLASH;

2. All I/O ports of the WiFi module and the UART programming port are brought out for convenient secondary development;

3. On-board AC-DC switching power supply module supporting AC 90-250V/DC 7-30V/5V input;

4. On-board reset button for the Wi-Fi module;

5. ESP-12F supports development tools such as Eclipse/Arduino IDE, with reference programs provided for the Arduino development environment;

6. On-board 4x 5V relays for outputting switch signals, suitable for controlling loads with operating voltages up to AC250V/DC30V;

7. On-board power indicator, 1 programmable LED, and relay status indicator.

Interface Specifications:

Programming Port:

ESP8266's GND, RX, TX, and 5V terminals connect to the external TTL serial module's GND, TX, RX, and 5V respectively. During download, IO0 must be connected to GND; disconnect IO0 from GND after download completion.

Relay Output Terminals:

NC: Normally Closed terminal. Shorted to COM before relay engagement; left floating after engagement.

COM: Common terminal.

NO: Normally Open terminal. Floating before relay engagement; shorted to COM after engagement.

GPIO Pinout Overview:

Setting Up the Arduino Development Environment

The ESP8266 supports development tools such as Eclipse and Arduino IDE. Using Arduino is relatively straightforward. The following outlines the method for setting up the Arduino development environment:

1. Install Arduino IDE version 1.8.9 or the latest release;

2. Open Arduino IDE, navigate to File > Preferences in the menu bar. Within Preferences, click Add URL under ‘Additional Board Manager URLs’:

http://arduino.esp8266.com/stable/package_esp8266com_index.json,

3. Navigate to Tools > Board > Board Manager in the menu bar. Search for ‘ESP8266’ and install the Arduino support package 2.5.2 or the latest version for the ESP8266.

Note: As the download source is overseas, access speeds may be slow and download errors may occur. Simply try again when network conditions improve.

Programme Download:

1. Connect IO0 and GND pins using jumper caps/DuPont wires. Prepare a TTL serial module (e.g., FT232) and plug it into your computer's USB port. Connect the serial module to the development board as follows:

2. Click Tools → Board in the menu bar, then select ESPINO (ESP-12 MODULE) as the development board.

3. Open the program to be downloaded. Click Tools → Port in the menu bar and select the correct port number.

4. Click ‘Upload’. The program will automatically compile and download to the development board, as shown below:

5. Finally, disconnect the IO0 and GND connection. Power the development board again or press the reset button to run the program.

Product List:

Relay Module*1