ESP8266 D1 Mini V3 4MB blue circuit board top view for Arduino

ESP8266 D1 Mini V3 4MB Pre-Soldered Dev Board for Arduino

Name: ESP8266 D1 Mini V3 4MB Pre-Soldered Dev Board for Arduino
Brand: ShillehTek
Price: 5.99 USD
Availability: InStock

$5.99 USD Shipping & tax calculated at checkout

In stock· Order by 3pm ET and it ships today

ShillehTek ESP8266 D1 Mini V3 with presoldered headers and 4MB flash streamlines assembly and provides ample firmware space on a compact WiFi development module for rapid prototyping.

Free Ground Shipping U.S. orders $35+
Ships from USA Domestic fulfillment
30-day returns Free defect replacement
7-day support Fast email replies

Frequently bought together

ESP8266 D1 Mini V3 4MB Pre-Soldered Dev Board for ArduinoNo reviews yet $5.99 This item

ShillehTek blue transparent Micro USB Cable 0.5m close-up connector view

Micro USB Cable 0.5m (1.64ft)No reviews yet $3.99

Close-up of ShillehTek Pre-Soldered BME280 sensor with purple PCB and metal pins

BME280 Pre-Soldered Temperature, Pressure & Humidity Sensor for Arduino & Raspberry Pi ★★★★★ (54) $9.98

Blue Micro SD TF Card Adapter with metal slot and pins ShillehTek module

Micro SD TF Card Adapter Reader Module SPI Interface for ArduinoNo reviews yet $4.49

Total for 4 items

$24.45

Products related to this item

Top view of ESP32-DevKitC-VE board showing metal shield and pin labels

No reviews yetESP32-DevKitC-VE Pre-Soldered Dev Board with 8MB Flash + 8MB PSRAM $24.99

ESP-WROOM-32 ESP32 Dev Board with CP2102 USB-C connector and pins

No reviews yetESP-WROOM-32 (ESP-32S) ESP32 Dev Board CP2102 USB-C Pre-Soldered $8.99

ESP32 Dev Board 4MB CP2102 USB-C with 38 pins detailed circuit view

No reviews yetESP32 Dev Board 4MB CP2102 USB-C Pre-Soldered 38-Pin $7.99

ESP8266 NodeMCU development board with 0.96 inch OLED display showing front and back sides with Type-C port

No reviews yetESP8266 NodeMCU Development Board with 0.96 Inch OLED Display, Type-C, Pre-Soldered with Foam $9.99

Close-up top angled view of ESP32-C3 4MB Pre-Soldered WiFi Dev Board for Arduino

No reviews yetESP32-C3 4MB Pre-Soldered WiFi Dev Board for Arduino $5.99

ESP32 UNO D1 R32 development board with WiFi Bluetooth, CH340G USB, and 4MB flash memory

No reviews yetESP32 UNO D1 R32 Development Board with WiFi & Bluetooth, 4MB Flash, CH340G, Type-B USB $9.25

Overview

Product Overview

The ShillehTek ESP8266 D1 Mini V3 4MB Dev Board (Presoldered) is a compact WiFi microcontroller board built for fast IoT prototyping and smart home projects. With preinstalled headers, it’s ready to plug into breadboards and header sockets for quick wiring, testing, and iteration. Powered by the popular ESP8266 platform and equipped with 4MB flash, it’s a solid choice for MQTT sensor nodes, simple web servers, automation triggers, and wireless telemetry. The D1 Mini V3 form factor keeps it compatible with many D1 Mini shields and common Arduino-style workflows, making it easy to build and deploy small connected devices.

Questions & answers

Frequently asked questions

Does the ESP8266 D1 Mini work with Arduino?

Yes. It uses the ESP8266 platform and fits common Arduino-style workflows, so it can be programmed for WiFi IoT projects. The D1 Mini V3 form factor is also compatible with many D1 Mini shields.

Is this D1 Mini ready for breadboards?

Yes. This version includes preinstalled headers, so it can plug directly into breadboards or matching header sockets. That removes the soldering step and makes wiring, testing, and swapping connections faster during prototyping.

What voltage logic does the ESP8266 D1 Mini use?

The ESP8266 provides WiFi connectivity and uses 3.3V logic on its GPIO pins. Avoid connecting 5V signals directly to ESP8266 pins unless proper level shifting or compatible circuitry is used.

What projects can I build with this board?

It is well suited for compact WiFi projects such as MQTT sensor nodes, simple web servers, smart home automation triggers, and wireless telemetry devices. The 4MB flash supports typical ESP8266 sketches and small connected applications.

Why is my D1 Mini not uploading code?

Use a USB cable that supports data, select an ESP8266-compatible D1 Mini board profile in the Arduino environment, and choose the correct serial port. Also confirm the pre-soldered headers are firmly seated in the breadboard or socket.

Have other questions?

Chat with our US-based team — we usually reply fast.

What's included