--- product_id: 39355585 title: "Beetle-A Small Microcontroller for Arduino Leonardo with USB HID for IoT & Wearable Projects (20mm×22mm, ATmega32u4, 3V Battery Support)" brand: "dfrobot" price: "SAR 50" currency: SAR in_stock: true reviews_count: 13 category: "Dfrobot" url: https://www.desertcart.com.sa/products/39355585-beetle-a-small-microcontroller-for-arduino-leonardo-with-usb-hid store_origin: SA region: Saudi Arabia --- # 20mm×22mm ultra-compact size Micro USB plug-and-play programming V-shaped gold-plated pads for sewable no-solder design Beetle-A Small Microcontroller for Arduino Leonardo with USB HID for IoT & Wearable Projects (20mm×22mm, ATmega32u4, 3V Battery Support) **Brand:** dfrobot **Price:** SAR 50 **Availability:** ✅ In Stock ## Summary > ⚡ Tiny Tech, Massive Impact: Power your wearables and IoT dreams with the Beetle! ## Quick Answers - **What is this?** Beetle-A Small Microcontroller for Arduino Leonardo with USB HID for IoT & Wearable Projects (20mm×22mm, ATmega32u4, 3V Battery Support) by dfrobot - **How much does it cost?** SAR 50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/39355585-beetle-a-small-microcontroller-for-arduino-leonardo-with-usb-hid) ## Best For - dfrobot enthusiasts ## Why This Product - Trusted dfrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Thumb-Sized Powerhouse:** Ultra-compact 20×22mm footprint fits seamlessly into wearables and embedded projects. - • **Sew It, Don’t Solder It:** Innovative V-shaped gold pads enable conductive thread stitching—perfect for textile integration and rapid prototyping without a soldering iron. - • **Plug & Play with Arduino IDE:** Direct Micro USB programming with native USB-HID support to create keyboards, mice, and game controllers effortlessly. - • **Low-Power, High-Expandability:** Supports 3V coin battery operation with 10 digital and 5 analog pins plus SPI/I2C compatibility for scalable IoT solutions. - • **Beginner-Friendly & Classroom Ready:** Preloaded bootloader and wide-spaced pads make it ideal for makers, educators, and wearable tech innovators. ## Overview The Beetle is DFRobot’s smallest Arduino Leonardo-compatible microcontroller, measuring just 20mm by 22mm. Featuring an ATmega32U4 processor at 16MHz, it offers 10 digital pins, 5 analog inputs, and a unique sewable design with gold-plated pads for conductive thread integration. Its plug-and-play Micro USB interface supports USB-HID devices, making it perfect for wearable tech, embedded systems, and rapid prototyping without soldering. Optimized for low power with 3V battery support, the Beetle is a compact, affordable, and versatile solution for makers, educators, and IoT developers. ## Description Product description Tiny but Mighty The Beetle is DFRobot’s smallest microcontroller compatible with Arduino Leonardo. It features V-shaped, large-sized, gold-plated IO ports for easy wire attachment and can even be sewn directly onto clothing using conductive thread. Equipped with an Atmel ATmega32U4 clocked at 16MHz, it offers a variety of interfaces including 10 digital pins, 5 analog pins, and 4 PWM pins. Programming and testing are made easy with its Micro USB compatibility. Simply select “Arduino Leonardo” in the Arduino IDE to upload new code. The ATmega32U4 comes preloaded with a bootloader. Application Miniature industrial embedded devices (micro robots) Wearable devices (smart glasses, AR headsets) Smallest main controller compatible with Arduino Leonardo Microcontroller used in environmental monitoring stations Size: 20mm*22mm*3.8mm The Beetle is designed to provide a low-cost solution for disposable projects such as DIY projects, workshops, gift projects, E-Textiles, and educational purposes. It offers an affordable and easy-to-use option for students and makers who may not have the budget for more expensive hardware. Microcontroller Schematic SPECIFICATION Review: Works a treat, displays to Arduino IDE as Leonardo - Made my smallest K3NG, using the Beetle as its heart. I only had to change which pins were input/output and nothing else in the code for the upload to take and work first shot. It doesn't have as much memory space as a full Arduino Nano, but the SDA and SCL pins are better marked, as are the VCC and GND pads. The pads are big, and easy to solder, overall even better than the old Digispark boards. Review: Perfect for my project - It's tiny, it's inexpensive, and it works with the Sketch I made with an actual Leonardo. I keep it stored in a case meant for earplugs when not in use. Arduino IDE sees it as a Leonardo, everything works as a Leonardo. Splendid ## Features - Ultra-Compact Design: 20mm×22mm thumb-sized design is ideal for wearables and embedded systems, featuring wide-spaced pads for seamless conductive sewing and textile integration. - No-Solder, Sewable Design​​ – ​​V-shaped gold-plated pads​​ let users twist wires or stitch directly onto fabric with conductive thread. Ideal for beginners, classrooms, and rapid prototyping—no soldering iron needed. - Plug-and-Play with Arduino IDE​​ – Program via Micro USB. Leverage Leonardo’s USB-HID to create keyboards, mice, or game controllers. Directly download and debug programs via Micro USB interface, no need for programmer - Low-Power & Expandable: 10 digital pins + 5 analog inputs with 3V coin battery support | Optimized for long-term wearable use, compatible with SPI/I2C expansion via minimal wiring ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01B0IQFU4 | | Best Sellers Rank | #625 in Single Board Computers (Computers & Accessories) | | Brand | DFROBOT | | CPU Speed | 16 MHz | | Compatible Devices | Arduino Leonardo, ATmega32U4 | | Connectivity Technology | USB | | Customer Reviews | 4.4 out of 5 stars 163 Reviews | | Item Weight | 9.07 g | | Manufacturer | DFRobot | | Memory Storage Capacity | 32 KB | | Mfr Part Number | DFR0282 | | Model Name | Beetle | | Model Number | DFR0282 | | Operating System | Windows, macOS, Linux | | Processor Brand | Atmel | | Processor Count | 1 | | Processor Speed | 16 MHz | | RAM Memory Installed | 1 GB | | RAM Memory Technology | LPDDR4 | | Ram Memory Installed Size | 1 GB | | Total Usb Ports | 1 | | UPC | 752128161162 720405524078 | | Unit Count | 1 Count | | Wireless Compability | 5 GHz Radio Frequency | ## Product Details - **Brand:** DFROBOT - **CPU Speed:** 16 MHz - **Memory Storage Capacity:** 32 KB - **Model Name:** Beetle - **Ram Memory Installed Size:** 1 GB ## Images ![Beetle-A Small Microcontroller for Arduino Leonardo with USB HID for IoT & Wearable Projects (20mm×22mm, ATmega32u4, 3V Battery Support) - Image 1](https://m.media-amazon.com/images/I/51zDX1Rl0JL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works a treat, displays to Arduino IDE as Leonardo *by J***Y on June 26, 2024* Made my smallest K3NG, using the Beetle as its heart. I only had to change which pins were input/output and nothing else in the code for the upload to take and work first shot. It doesn't have as much memory space as a full Arduino Nano, but the SDA and SCL pins are better marked, as are the VCC and GND pads. The pads are big, and easy to solder, overall even better than the old Digispark boards. ### ⭐⭐⭐⭐⭐ Perfect for my project *by K***A on August 13, 2024* It's tiny, it's inexpensive, and it works with the Sketch I made with an actual Leonardo. I keep it stored in a case meant for earplugs when not in use. Arduino IDE sees it as a Leonardo, everything works as a Leonardo. Splendid ### ⭐⭐⭐⭐⭐ Perfect for a Mini Device! *by K***6 on May 3, 2023* I bought a couple of these for a mini device I was building for fun. It is so small and cute and works perfectly with Arduino code, just upload and go! It also powers perfectly from any USB 5V phone battery pack! The device I built is proprietary, but dealt with converting stings of data into wireless signals! These little things worked perfectly and so well priced for it's ability! ## Frequently Bought Together - Beetle - The Smallest Microcontroller - Seeed Studio XIAO ESP32C3 - Tiny MCU Board with Wi-Fi and BLE for IoT Controlling Scenarios. Microcontroller with Battery Charge, Power Efficient, and Rich Interface for Tiny Machine Learning. … - Seeed Studio XIAO RP2040 Microcontroller, with Dual-Core ARM Cortex M0+ Processor, Supports Arduino, MicroPython and CircuitPython with Rich Interfaces. --- ## 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.com.sa/products/39355585-beetle-a-small-microcontroller-for-arduino-leonardo-with-usb-hid](https://www.desertcart.com.sa/products/39355585-beetle-a-small-microcontroller-for-arduino-leonardo-with-usb-hid) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-07-03*