ESP-12F AC-DC Power Supply ESP8266 AC90-250V-DC7-12V-USB5V WIFI Single Relay Module Development Board
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ESP-12F AC-DC Power Supply ESP8266 AC90-250V-DC7-12V-USB5V WIFI Single Relay Module Development Board |
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https://bogza.ro/index.php/ESP-12F_AC-DC_Power_Supply_ESP8266_AC90-250V-DC7-12V-USB5V_WIFI_Single_Relay_Module_Development_Board |
Feature
- On-board mature and stable -12F WIFI module, large capacity 4M Byte Flash
- The I / O port and UART program download port of the WiFi module are all exported, which is convenient for secondary development.
- On-board AC-DC switching power supply module, power supply mode supports AC90-250V / DC7-12V / USB5V
- On-board WIFI module RST reset button
- -12F supports the use of development tools such as Eclipse / for Arduino IDE, and provides reference programs under the for Arduino development environment.
- One 5V relay on board, output switching signal, suitable for controlling load with working voltage within AC250V / DC30V
- Onboard power indicator, 1 programmable LED and relay indicator
Function
- L, N: AC90-250V power supply
- AC90-250V to DC5V switching power supply (Do not touch here directly with your hand when using AC power supply !!!)
- VCC, GND: DC7-12V power supply;
- USB: DC5V USB power supply; Note: AC90-250V, DC7-12V, DC5VUSB can be selected as one of the three power supply methods.
- 6X6mm button: 8266 reset button;
- UART program download port: GND, RX, TX, 5V of 8266 are connected to GND, TX, RX, 5V of the external TTL serial module rectively. IO0 must be connected to GND when downloading, and then disconnected connection;
- GPIO pin out port;
- 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.
- Power indication LED;
- Programmable LED;
- 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 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 0 ~ 1V, value : 0 ~ 1024 |
6 | 3V3 | 3.3V power supply | 18 | 3V3 | 3.3V power supply |
7 | SCLK | clock | 19 | MOSI | 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 |