COVID-19 Update: Our online sales are continuing for our CanadianUS and many International customers. Package deliveries are being slightly delayed in transit but are still arriving. Orders are shipped the next business day after they are received. Contact Us for any questions.

NodeMCU IoT Experimenter Bare Board - No Parts

Advanced Prototyping Platform for the NodeMCU ESP8266

NodeMCU IoT Experimenter - Advanced prototyping solution for NodeMCU

The NodeMCU is an extremely powerful and compatible Internet of Things (IoT) solution, which also is compatible with the Arduino ecosystem and development tools. The NodeMCU IoT Experimenter enhances the basic abilities by providing an environment which provides a rapid hardware development prototyping area.

The prototyping board features a universal socket area for mounting either narrow or wide NodeMCU processors, a regulated power module, indicator LEDs and over 1,000 plated holes on the prototype surface.


The NodeMCU IoT Experimenter is a versatile prototyping platform for use with a variety of popular NodeMCU modules including our NodeMCU Carrier Board. Great to use for IoT projects, advanced or straightforward interfacing and as a prototyping platform. The NodeMCU, with its versatility, including its ability to be programmed and used from the Arduino IDE, makes it along with this prototyping board the perfect experimenter’s solution.

The NodeMCU IoT Experimenter measures 5 5/16" x 4.5" (135mm x 115mm) with a solder mask on each side, plated holes along with a high-contrast silk-screen labeling component and prototyping positions.

Features of the board include a mounting socket area to accept either wide 1.1" or narrow 0.9" pitch NodeMCU modules. This includes the Amica NodeMCU Carrier Board (narrow pin spacing) to compatible variants such as the LoLin NodeMCU models. Power can be provided directly to your NodeMCU module through its built-in USB interface. Alternately, power can be supplied to the NodeMCU IoT Experimenter board which has provisions for a regulated power supply module.

The board offers over 1,000 plated-through holes on the prototype surface, mounting for eight status indicator LEDs along with dropping resistors and a power indicator LED. The prototyping area offers power busbars for the Ground (G), +3.3V (3V) power rail, and a third rail X. The third rail can be used for external voltages such as a 5V rail.

Interfacing to the NodeMCU is through a series of headers which extend each pin of the NodeMCU to rows of four headers. Each port is labeled to identify matching pins from the NodeMCU. The header area is located below the NodeMCU using standard 40-pin headers allowing for versatility in interfacing for sockets or header pins.

Component List

Ultra-Small Size DC-DC Step Down Power Supply Module 3A output 24V/12V to 5 V Buck Converter for Arduino Dimensions

Components To Complete This Kit

This kit contains ONLY the bare NodeMCU IoT Experimenter Board - You supply all parts.

Give yourself about 1 hour to assemble and solder the kit of parts.

Note: Items marked with [ X ] are included in the kit. This is a the bare board only, so you must supply all parts and NodeMCU.

A complete kit is also available including board, NodeMCU, and all parts. View the attractively priced Full Kit.

Prototype Board
X ]   (1) NodeMCU IoT Experimenter Prototype Board

NodeMCU Processor
  ]   (1) NodeMCU Carrier Board or
  ]   (1) NodeMCU (LoLin or Compatible)

Semiconductors (LEDs and Regulator)
  ]   (9) Blue Frosted 5mm LED - LED1-LED9
  ]   (1) 3.3V Regulator Module - VR1

Resistor 1/4 watt, 5% Carbon Film
  ]   (9) 56 Ω (green-blue-black-gold) - R1-R9

Sockets and Headers
  ]   (1) 2.1mm (optional 2.5mm) Coaxial Jack PCB Mount - J1
  ]   (1) Rising Clamp Terminal BlockJ2
  ]   (1) 1x40 40-pin Female ConnectorI/O Connector
  ]   (1) 2x40 Dual-Row Male ConnectorI/O Connector
  ]   (1) 3-pin Single Row Header & Shorting BlockJ3
  ]   (1) 1x40 Single-Row Male Connector (see note below)

The 1x40 Single Row Male Connector needs to be cut-to-size as needed.

  • Three pins need to be trimmed for the 3-pin shorting block at position J3
  • Four sets of 2-pins for the Regulator Module VR1
  • The remaining pins can be used in sets of two for the eight LED power connections (LED1-LED8)

X ]   (1) Quick Reference Guide

PDF format Quick Reference Guide. The guide is a handy resource for use while assembling your NodeMCU IoT Experimenter.

LED Status Indicators

At the bottom of the board, there are provisions for up to eight LEDs and dropping resistors. LED1 to LED8 can either be 3mm or 5mm LEDs. The complete kit includes eight bright 5mm frosted Blue LEDs, along with eight currently limiting resistors (for position R1 to R8).

On-Board Power Indicator

A LED for power indicator at LED9 is included with the kit and is a frosted Blue LED. Resistor R9, also included with the kit, limits current flow through the LED. The LED is set up to minimally draw approximately 8mA of current - maximizing power usage in current-sensitive applications.

On-Board Power Supply

The NodeMCU requires 3.3V to operate. Power can be applied directly to the NodeMCU through the USB connector, alternately, unregulated power (5V to 15V DC) can be supplied to power connected J1 or J2.

Regulation of power applied to J1 or J2 is through the included 3.3V Regulator Module at VR1. The Regulator Module can easily supply currents in excess of 2A.

NodeMCU ESP8266 Technical Specifications

  • Microcontroller: ESP8266 Tensilica 32-bit
  • Serial to USB Converter: CP2102
  • Operating Voltage: 3.3V
  • Input Voltage: 7-12V
  • Digital I/O Pins: 11
  • PWM I/O Pins (Shared with Digital I/O): 10
  • Analog Input Pins: 1 (10-bit)
  • DC Current per I/O Pin: 12mA (Max)
  • Hardware Serial Ports: 1
  • Flash Memory: 4 MBytes
  • Instruction RAM: 64 KBytes
  • Data RAM: 96 KBytes
  • Clock Speed: 80MHz
  • Network: IEEE 802.11 b/g/n WiF
  • Built-in LED: Attached to digital pin 13
  • USB Connector: Style Micro-B Female
    Datasheets: ESP8266EX and ESP-12F

Additional Resources

Quick Reference Guide

We have produced a Quick Reference Guide, which is available in PDF format and is a summary of our detailed information available on our NodeMCU Information Pages. The guide is a handy resource while assembling your NodeMCU IoT Experimenter board. 

NodeMCU IoT Experimenter - Detailed Information

A one-stop resource for all information on the NodeMCU IoT Experimenter prototype board. 

Easily Configure Arduino IDE for NodeMCU

Link to setting up your NodeMCU to use the Arduino IDEThe NodeMCU offers a variety of development environments, including compatibility with the Arduino IDE. The NodeMCU/ESP8266 community created an Arduino add-on. If you’re just getting started programming the ESP8266 or an established developer, this is the highly recommended environment.

Write a review

Note: HTML is not translated!
    Bad           Good

NodeMCU IoT Experimenter Board

Bare Board - You Supply The Parts
  • Product Code: NodeMCU IoT Exp Board
  • Availability: In Stock
  • $7.00 USD

Related Products

NodeMCU ESP8266 IoT with WiFi

NodeMCU ESP8266 IoT with WiFi

IoT Development Board

NodeMCU ESP8266 IoT with WiFi Internet of Things Development Board An open-source firmware and..

$7.95 USD

NodeMCU IoT Experimenter Kit

NodeMCU IoT Experimenter Kit

Includes NodeMCU and All Parts

NodeMCU IoT Experimenter Prototype Board Advanced Prototyping Platform for the NodeMCU ESP8266 ..

$10.00 USD

NodeMCU Carrier Board

NodeMCU Carrier Board

Genuine Amica NodeMCU

Genuine Amico NodeMCU ESP8266 Carrier Board with Dual DB-09 RS-232 Ports The NodeMCU (Node&nbs..

$7.00 USD

DS1302 Real Time Clock Module

DS1302 Real Time Clock Module

Arduino Compatible - Real Time Clock

DS1302 Real Time Clock Module Arduino Compatible RTC The DS1302 is an accurate clock module wh..

$2.95 USD