Features ¶. Screen Size: 64x48 pixels (0.66" Across) Operating Voltage: 3.3V. Driver IC: SSD1306 (I2C Address: 0x3C or 0x3D) 2x I2C Button (customizable I2C Address, default:0x31) Exploring Different Variants of Wemos D1 Boards Before we plunge into the setup process, it's essential to grasp the diversity among Wemos D1 boards. Variants like R1, R2, and MINI are available in the market. While R1 and R2 boards bear a striking resemblance to the Arduino UNO board, the version information isn't explicitly printed on them. Step 4: Arduino Sketch for MicroSD Card Logger. * "Wifi D1 Mini" or "Wemos D1 Mini" MicroSD card logger and real time clock. * NOTE: Despite the name, this card does not support Wifi. It appears there's a card of the * same name that also has an ESP-8266EX, and that one supports Wifi. {"payload":{"allShortcutsEnabled":false,"fileTree":{"examples/02.Special/Servo/Sweep":{"items":[{"name":"Sweep.ino","path":"examples/02.Special/Servo/Sweep/Sweep.ino Flash MicroPython firmware ¶. The boards were already flashed micropython firmware. If they lost firmware or you need lastest firmware, you can flash MicroPython firmware by yourself. For example, you can connect an ESP8266 to an Arduino to add Wi-Fi capabilities to your Arduino board. The most practical application is using it as a standalone device. WeMos D1 Mini. ESP8266 WeMos D1 Mini. The WeMos D1 Mini offers 4MB flash memory, 11GPIOs, and 1 ADC pin in a minimal and small setup. Step 4: Software. Step 1: Connect the Wemos d1 mini to your computer, open Tasmotizer, load the file you just downloaded, and flash it. Step 2: When it is finished loading and restarting, connect to the wifi network called "MrDIY Notifier". The password is "mrdiy.ca". Step 3: You should get a popup. The ADS1115 device is a precision, low-power, 16-bit, I2C-compatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package. The ADS1115 device incorporates a low-drift voltage reference and an oscillator. The ADS1115 also incorporate a programmable gain amplifier and a digital comparator. These features, along with a wide operating ATJ7o1A.