--- product_id: 161174420 title: "HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers" brand: "haljia" price: "279CFA" currency: XOF in_stock: false reviews_count: 4 url: https://www.desertcart.sn/products/161174420-haljia-3pcs-pro-micro-atmega32u4-5v-16mhz-bootloadered-ide-micro store_origin: SN region: Senegal --- # 16MHz Speed Micro USB Connectivity Breadboard Friendly HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers **Brand:** haljia **Price:** 279CFA **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate Your Projects with HALJIA's Microcontroller Marvel! ## Quick Answers - **What is this?** HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers by haljia - **How much does it cost?** 279CFA with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/161174420-haljia-3pcs-pro-micro-atmega32u4-5v-16mhz-bootloadered-ide-micro) ## Best For - haljia enthusiasts ## Why This Product - Trusted haljia brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-in USB Magic:** Eliminate the need for secondary processors with integrated USB support. - • **Compact Powerhouse:** Lightweight design at just 11.1g for ultimate portability. - • **Unleash Your Creativity:** Transform ideas into reality with seamless USB communication. - • **Versatile Compatibility:** Works effortlessly with Arduino IDE for endless project possibilities. - • **Plug-and-Play Simplicity:** Connect and code in seconds with no extra components needed. ## Overview The HALJIA Pro Micro Development Board is a compact and powerful microcontroller based on the Atmega32U4, designed for easy integration with Arduino projects. Weighing only 11.1 grams, it features built-in USB communication, allowing it to function as a mouse, keyboard, or virtual serial port, making it an essential tool for innovative developers. ## Description Feature: ATmega32U4 running at 5V/16MHz Supported under Arduino IDE v1.0.1 Recommend power supply for board: 6-7V, less than 9V On-Board micro-USB connector for programming 4 x 10-bit ADC pins, 12 x Digital I/Os Rx and Tx Hardware Serial Connections Dimension: 33mm*18mm Weight: 3.7g Usage: Connected to computer. Opened Arduino IDE and loaded Blink sketch. Set board to Leonardo and selected the appropriate COM port (It showed up in the list already identified as a Leonardo). Connected an LED to pin 9 and modified the sketch accordingly. Hit upload and within a few seconds having a blinking LED. Packing List: 3 x Arduino Pro Mini ATmega32U4 Module ## Features - The Micro is a microcontroller board based on the Atmega32u4, developed in conjunction with Adafruit. - It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. - It has a form factor that enables it to be easily placed on a breadboard. - The Micro is similar to the Leonardo in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. - This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | HALJIA | | Part number | 1 | | Item Weight | 11.1 g | | Product Dimensions | 3.4 x 1.8 x 0.7 cm; 11.1 Grams | | Manufacturer reference | 1 | | Batteries included? | No | | Batteries Required? | No | ## Images ![HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers - Image 1](https://m.media-amazon.com/images/I/714PFaYG+gL.jpg) ![HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers - Image 2](https://m.media-amazon.com/images/I/71HC0HiZKhL.jpg) ![HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers - Image 3](https://m.media-amazon.com/images/I/71kpDc0zq1L.jpg) ![HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers - Image 4](https://m.media-amazon.com/images/I/7103AcGzBjL.jpg) ![HALJIA 3Pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible with Arduino Pro Micro Serial Connection with Pin Headers - Image 5](https://m.media-amazon.com/images/I/71zEyzrK2BL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Pro micro *by M***8 on Reviewed in the United Kingdom on 2 March 2020* Good ### ⭐⭐⭐ 3.0 out of 5 stars Micro USB very weak *by M***C on Reviewed in the United Kingdom on 2 May 2021* Fast delivery and a great compact board, processor gets too hot runing at 5V (usb not plugged in)Micro usb very weak, it snapped off when I plugged in the usb cable, board now useless. ### ⭐⭐ 2.0 out of 5 stars USB Port Incredibly Weak *by M***L on Reviewed in the United Kingdom on 17 June 2021* It works fine but the USB port is apparently just held on by thoughts and prayers, barely moving it around has caused 2 out of 3 USB ports to come off the boards. The only reason its not 3 out of 3 is because I have not dared to try and use the 3rd one yet. Its a shame because it was working well up until that point. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/161174420-haljia-3pcs-pro-micro-atmega32u4-5v-16mhz-bootloadered-ide-micro](https://www.desertcart.sn/products/161174420-haljia-3pcs-pro-micro-atmega32u4-5v-16mhz-bootloadered-ide-micro) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-03*