ESP-12F AC/DC Power Supply ESP8266 AC90-250V/DC7-12V/USB5V WIFI Single Relay Module Development Board

Feature:

1. On-board mature and stable ESP-12F WIFI module, large capacity 4M Byte Flash

2. The I / O port and UART program download port of the WiFi module are all exported, which is convenient for secondary development.

3. On-board AC-DC switching power supply module, power supply mode supports AC90-250V / DC7-12V / USB5V

4. On-board WIFI module RST reset button

5. ESP-12F supports the use of development tools such as Eclipse / Arduino IDE, and provides reference programs under the Arduino development environment.

6. One 5V relay on board, output switching signal, suitable for controlling load with working voltage within AC250V / DC30V

7. Onboard power indicator, 1 programmable LED and relay indicator

Function:



1. L, N: AC90-250V power supply

2. AC90-250V to DC5V switching power supply (Do not touch here directly with your hand when using AC power supply !!!)

3. VCC, GND: DC7-12V power supply;

4. Micro USB: DC5V USB power supply;

Note: AC90-250V, DC7-12V, DC5VUSB can be selected as one of the three power supply methods.

5. 6X6mm button: ESP8266 reset button;

6. UART program download port: GND, RX, TX, 5V of ESP8266 are connected to GND, TX, RX, 5V of the external TTL serial module respectively. IO0 must be connected to GND when downloading, and then disconnected connection;

7. GPIO pin out port;

8. Relay output:

Normally closed end, the relay is short-circuited to COM before pull-in, and suspended after pull-in;

COM: public end;

NO: Normally open, the relay is suspended before the pull-in, and shorted to COM after the pull-in.

9. Power indication LED;

10. Programmable LED;

11. Relay Indication LED: Lights up during pull-in.

Introduction to GPIO terminal:

Number	Name	Function	Number	Name	Function
1	GND	Power ground	13	IO10	GPIO10
2	Relay	The relay drive port is driven by IO5 by default. If you want to use other I / O to drive the relay, you can remove R14, and then connect the I / 0 of the drive relay to this Relay pin	14	MISO	Slave output master input
3	IO2	GPIO2; UART1_TXD	15	IO13	GPIO13; HSPI_MOSI; UART0_CTS
4	IO4	GPIO4	16	IO14	GPI014; HSPI_CLK
5	RX	UART0_RXD; GPIO3	17	ADC	A / D conversion result. Input voltage range 0 ~ 1V, value range: 0 ~ 1024
6	3V3	3.3V power supply	18	3V3	3.3V power supply
7	SCLK	clock	19	MOSI	Master output Slave input
8	IO15	GPIO15; MTD0; HSPICS; UART0_RTS	20	IO9	GPIO9
9	IO0	GPIO0	21	CS0	Chip Select
10	IO5	GPIO5	22	IO12	GPIO12; HSPI_MIS0
11	TX	UARTO_TXD; GPIO1	23	IO16	GPIO 16
12	5V	5V power supply	24	GND	Power ground

Package includes:

1 x Development Board