I2C Connection Pins on the WeMos D1 Mini (ESP8266) – The Chewett blog
ESP8266 WEMOS D1 With I2C Serial LCD | alselectro
ESP8266 D1 Mini V2 ESP-12F WiFi Module - ProtoSupplies
I2C Connection Pins on the WeMos D1 Mini (ESP8266) – The Chewett blog
Network Clock using ESP8266 and OLED display - Electronics-Lab.com
ESP-12E ESP8266 Development Board WeMos D1 R1 - BEEMONG TECHNOLOGY
SeanD: Troubleshooting I2C bus on your microcontroller
I2C Connection Pins on the WeMos D1 Mini (ESP8266) – The Chewett blog
Photometry through the Internet: BH1750 and Wemos D1 mini ESP 8266 – thesolaruniverse
Web-hooks : Only D5 pin works for wemos mini - Solved - Blynk Community
D1 (R2) ESP8266 Development Board
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Help getting I2C working on Wemos D1 R2 (ESP8266) - Networking, Protocols, and Devices - Arduino Forum
ESP8266 pinout reference and how to use GPIO pins
arduino uno - Problem to Setting up i2c OLED wemos D1 mini shiled (64*24) - Arduino Stack Exchange
Change SDA and SCL pins in LiquidCrystal_I2C.h using ESP8266 - Programming Questions - Arduino Forum
nodemcu - I2C interference SENSOR(SCL+SDA) and MasterSlave comm - Arduino Stack Exchange
WeMos D1 mini pins and diagram
ESP32-S2 pinout - for those of you who are looking for an inexpensive ($2.40 USD) microcontroller than has a plethora of inputs and can be coded in a few languages. Especially micropython :