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10pcs ESP-12F AC/DC Power Supply ESP8266 AC90-250V/DC7-12V/USB5V WIFI Single Relay Module Development Board

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                  Feature:

                  1. On-board mature and stable -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. -12F supports the use of development tools such as Eclipse / for Arduino IDE, and provides reference programs under the for 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:

                  10pcs ESP-12F AC/DC Power Supply ESP8266 AC90-250V/DC7-12V/USB5V WIFI Single Relay Module Development Board

                  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. 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: 8266 reset button;
                  6. 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;
                  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 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

                  Package includes:

                  10 x Development Board

                  10pcs ESP-12F AC/DC Power Supply ESP8266 AC90-250V/DC7-12V/USB5V WIFI Single Relay Module Development Board


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