Difference: TheHardware (16 vs. 17)

Revision 172021-05-06 - UliRaich

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The Hardware

The CPU card

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The ESP8266 CPU card has the following pinouts:

There are two different ESP32 CPU cards available for the WeMos D1 mini bus. The first card is based on an ESP-wroom-32 CPU while the second one uses the ESP-wrover-b chip.

Both cards have

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PIR sensor	D4 (default)	GPIO 2	GPIO 16	Passive Infrared Switch
BH1750 sensor	D1 D2	GPIO 5 I2C SCL GPIO 4 I2C SDA	GPIO 22 I2C SCL GPIO 21 I2C SDA	Ambient light sensor
Relay	to be configured			Relay shield

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IR receiver
IR transmitter

D4
D3

GPIO 17
GPIO 16

on WROVER: connect GPIO 17 to GPIO 25 and use GPIO 25
connect GPIO 16 to GPIO 4 and use GPIO 4

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IR receiver
IR transmitter

D2
D1

GPIO 21
GPIO 22

Here is a correspondence table between the Dx pin nomination and the ESP8266 and ESP32 GPIO pin numbers:

Dx	GPIO ESP8266	GPIO ESP32 WROOM	GPIO ESP32 WROVER
A0	ADC 0	36	36
D0	16	26	26
D1 I2C SCL	5	22	22
D2 I2C SDA	4	21	21
D3	0	16	patched to 25
D4	18	17	patched to 4
D5 SPI clock	14	18	18
D6 SPI MISO	12	19	19
D7 SPI MOSI	13	23	23
D8 SPI CS	15	5	5

TWiki Admin User - 2020-04-25

Comments

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META FILEATTACHMENT	attachment="esp8266.png" attr="" comment="" date="1620288701" name="esp8266.png" path="esp8266.png" size="400213" user="UliRaich" version="1"

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