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| ==== Update Log for ESP Relay Board VDC ====
| | redirect page - https://w2.electrodragon.com/gollum/search?q=NWI1115-dat.md |
| <gallery>
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| File:ESP_Relay_Board_Configuration_V4.2.png | Latest version of ESP Relay Board VDC version V4.2
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| File:ESP_DC_Relay_Board_01.JPG | (Old version)
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| File:Wifi_iot_relay_board_VDC.png | Schematic
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| File:ESP_Relay_Board_VDC_silk_print.png | VDC Relay board latest silk print 4.2
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| </gallery>
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| * V4.2 added voltage divider on back side of PCB, this need to be soldered manually.
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| * V4.1 pin headers changed to two group. RST, ADC and DHT_IO16 pins on left side now.
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| == Analag Input A0 ==
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| {| class="wikitable"
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| |-
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| ! Back Side Jumper !! Header text
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| |-
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| | Connect || No voltage divider, A0 directly connect to ESP-12 Module ADC pin.
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| |-
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| | Disconnect || A0 input via voltage divider to ADC = 220K / 100K, maximium input A0 3.3V
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| |}
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| * Reference calculation see here: https://learn.sparkfun.com/tutorials/voltage-dividers/all
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| | |
| == Specific for Relay Board VDC ==
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| {| class="wikitable sortable"
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| |-
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| ! Jumper !! Header text !! Header text
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| |-
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| | U2 || wireless RF receiver, output TTL signal to ESP12F pins, DO -> IO2, D1 -> IO15|| -
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| |-
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| | JP2 || Alternative power supply pin 5V-24V, = terminal power input || -
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| |-
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| | JP7 || Power input selection, choose between 5V or 5-24V.|| -
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| |-
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| | JP1 || DHT, ADC, RST || -
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| |-
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| | JP6 || row 1: RXD, TXD, 5V, GND, row 2: 3.3V, IO4, IO5, IO15 || -
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| |-
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| | Green Out Input Terminal || VIN 5-26V (top / inside of the board), ground (close to the edge outside of the board) || -
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| |}
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