• PTSolns ESP32 microWatt low-power development board for IoT applications, featuring embedded ESP32 module with Wi-Fi and Bluetooth LE, USB-C and 3.5–6V external power input, optimized pin grouping for I2C and SPI, ideal for prototyping and battery-powered projects
  • PTSolns ESP32 microWatt development board assembled with stacking female headers, highlighting flexible expansion options and easy stacking for IoT prototyping and low-power applications
  • PTSolns ESP32 microWatt development board pinout diagram, illustrating grouped pins for I2C, SPI, power inputs, and GPIO, designed for intuitive wiring and IoT project prototyping
  • Side-by-side comparison of PTSolns ESP32 microWatt development board assembled with standard male headers (left) and stacking female headers (right), demonstrating versatile header options for IoT prototyping and expansion
  • Application example showing PTSolns ESP32 microWatt mounted on PTSolns ESP Master Key, connected to LoRa module installed on PTSolns LoRa Key, demonstrating a complete IoT wireless communication setup for long-range data transmission
  • Top view of PTSolns ESP32 microWatt development board showing precise board dimensions and mounting hole locations for accurate integration into custom IoT projects and enclosures
  • PTSolns ESP32 microWatt package contents including development board, stacking female headers, and user manual for IoT prototyping and low-power applications
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ESP32 microWatt Development Board Microcontroller

ESP32 microWatt Development Board Microcontroller

$19.99 CAD
$19.99 CAD
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NOTE: For large quantity orders of the ESP32 microWatt with custom pricing please contact us directly.

This product has a datasheet!

This product has a 3D model!

This product has a video!

This product has a custom library!

This product has a Fritzing model!

  

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About this item

  • What is the ESP32 microWatt?: The ESP32 microWatt is a compact, stackable development board based on the powerful Espressif ESP32S chip, featuring a dual-core 32-bit processor running at up to 240 MHz. With built-in 2.4 GHz Wi-Fi and Bluetooth 5.0, this board is ideal for wireless applications like IoT, sensor networks, and off-grid remote monitoring. Its ultra-low power consumption and modern USB-C interface make it perfect for battery-operated projects used by hobbyists, educators, and professionals alike.
  • Easy to start: The ESP32 microWatt board supports a variety of popular development environments, including Arduino IDE, PlatformIO, ESP-IDF, MicroPython, and CircuitPython. Quick setup is made easier with CH340 USB driver support, and detailed instructions can be found in the datasheet available through our “PTSolns Documentation Repository”.
  • microWatt Family: Designed for flexibility and expandability, the ESP32 microWatt is part of the microWatt product family. All modules are stackable, enabling you to add features such as a prototyping section, Li-ion battery charging, LoRa communication, and more—tailored to your project needs.
  • What’s Included: Each package includes one (1) PTSolns ESP32 microWatt, two (2), standard male headers, and two (2) stacking female headers. The ESP32 microWatt can be stacked from the top or from the bottom, and this is why the headers are not soldered. The user can assemble the headers such that it best suits their needs. This is a kit, SOLDERING REQUIRED.
  • PTSolns Customer Support & Resources: We’re here to help. Contact PTSolns support for assistance or technical questions. Every PTSolns product is backed by our comprehensive resource library, including datasheets, schematics, 3D models, Fritzing files, and tutorials. All supporting material is freely available on our “PTSolns Documentation Repository”.

 

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Product Description

Side-by-side comparison of PTSolns ESP32 microWatt development board assembled with standard male headers (left) and stacking female headers (right), demonstrating versatile header options for IoT prototyping and expansion

The PTSolns ESP32 microWatt is a low power development board specifically designed for IoT (Internet-of-Things) and related applications. Equipped with both Wi-Fi® and Bluetooth® LE capabilities facilitated by an embedded ESP32 module. The board can be powered through either USB-C® or an external voltage input ranging from 3.5V to 6.0V, rendering it particularly suitable for single-cell 3.7V/4.2V LiPo battery applications.

The ESP32 microWatt has an intuitive pinout, collecting like pins in groups such as the I2C and SPI pins. Packed with many unique features, this development board is ideal for hobbyists, educators and professionals for prototyping and testing their projects.

The microWatt Support Library (mSL) helps novice users with various tasks and provides important product information. The mSL combined with a collection of supporting material relating to ESP32 development and reduces the barrier-to-entry into the world of IoT development.

The ESP32 microWatt is part of the microWatt family, which consists of several products designed to work together. These products, when combined offer additional features such as LiPo charging via PV solar, long distance communication, and custom prototyping.

 

microWatt Family

This product is part of the microWatt Family. All the members of this series include:

  • ESP32 microWatt (this product page)
  • microWatt Proto
  • microWatt LoRa ... coming soon
  • microWatt Charger ... coming soon

 

Extremely Low Power

Graph showing PTSolns ESP32 microWatt current consumption with deep sleep current on left y-axis and active current on right y-axis, illustrating power efficiency for battery-powered IoT applications
The ESP32 microWatt microcontroller development board got its name from the fact it consumes such low power, especially during deep sleep. This makes this microcontroller especially well-suited for battery operated applications, such as in Internet-of-Things IoT, sensor gathering, wireless sensor networks (WSN) and others.

Please see the full detailed datasheet for more details. The datasheet along with several other supporting material can be found on our "PTSolns Documentation Repository".

Versatile and Compatible

Application example showing PTSolns ESP32 microWatt mounted on PTSolns ESP Master Key, connected to LoRa module installed on PTSolns LoRa Key, demonstrating a complete IoT wireless communication setup for long-range data transmission

This is one of many countless example applications of the ESP32 microWatt microcontroller development board. In this example the board is connected to a LoRa Module. Since both the ESP32 microWatt and the LoRa module operate on 3.3V, there is no need for any logic-level shifters and the logic signals from one to the other can be made directly. For quick prototyping the ESP Master Key and the LoRa Key are used on a standard breadboard.

ESP32 microWatt Header Assembly

Side-by-side comparison of PTSolns ESP32 microWatt development board assembled with standard male headers (left) and stacking female headers (right), demonstrating versatile header options for IoT prototyping and expansion

The ESP32 microWatt microcontroller development board does not come assembled with headers. This is because the user can choose which headers they require in their application. Each product page contains a full set of male headers and stacking female headers.

Stack it any way you like

Comparison image showing three prototyping options with PTSolns ESP32 microWatt and microWatt Proto board: left for more prototyping space, center without stacking female headers, right for accommodating large profile components on the microWatt Proto board

[Left image] Choose this option when you need more prototyping space.

[Centre image] Choose this option when you don't want to use the stacking female headers on the ESP32 microWatt.

[Right image] Choose this option when you have large profile components that need to be soldered onto the microWatt Proto board.

Compliance

PTSolns ESP32 microWatt development board compliance logos including FCC, IC/ISED, and RoHS certifications, ensuring regulatory approval and environmental standards for IoT devices

 

The ESP32 microWatt microcontroller development board is fully compliant:
  • FCC
  • IC / ISED
  • RoHS3
    Find all PTSolns product certifications on our "PTSolns Certification Repository".

    Other Names

    • ESP32 microWatt
    • ESP32 Dev Board
    • PTS-00165-111
    • PTS-00165-211

    Customer Reviews

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    r
    ruraluser1
    Low power, easy development, and attention to detail.

    Great ESP32 Module. The package comes w/ both standard and stacking headers. I used the stacking headers. In conjunction with the pin labels on the board this makes wiring and debugging very easy, as the board makes the circuit self documenting. The board has an onboard switching power supply that is very efficient and does not throw away power like the linear regulators on most of these prototyping boards do, when the board is put is in low power mode, the current draw is microwatts. I bought this for battery powered applications, but it's attention to detail on other features and price is a winner for all applications. The onboard wifi and bluetooth make in circuit, over the air programming easy, and the expanded memory and flash of the ESP32 make complex applications possible. This board is not a toy...it's more capable than an ATMEGA based module (e.g. Arduino Nano) in almost every way. If you think you might need wifi, bluetooth, or super low power in your app, this board deserves serious consideration.

    It was no problem to install the CH340 drivers for the built-in serial port and after that the Arduino IDE talked to it easily.

    Both units were fully functional and passed all the testing I threw at them.

    The sample program was able to detect two separate I2C devices at different addresses on the same bus and print out the correct addresses.

    Light flashing, variable brightness, and 10-bit ADC input all worked as advertised.

    The boards mount nicely in my test setup. They have the pins in place already. The pin labels are nicely silkscreened on the back and the important ones are marked on the top also.

    The documentation is awesome and very helpful in getting started.

    The board has a 7-12v DC input via the GPIO pins and can also be supplied by 5v DC through the USB-C port and there is a 5v voltage regulator on board.

    The only thing I did not strictly understand is the "5v isolate" jumper disconnect, which wasn't explained very well in the manual.