The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 USB to Serial converter chip, instead of using an Atmega16U2 chip. We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the USB port. During normal operation, this board is identical to the more expensive version without CH340 chip.

Available Quantity : 5
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WiFi 802.11b/g/n Transceiver Module 2.4GHz ~ 2.5GHz Integrated, Trace Surface Mount https://www.digikey.in/en/products/detail/espressif-systems/ESP-WROOM-02D-N4/10259353

Available Quantity : 19
Package : esp

XIAO nRF52840 Sense TinyML/TensorFlow Lite IMU / Microphone – Bluetooth5.0. On-chip Memory: 1 MB flash and 256 kB RAM

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tiny MCU board with Wi-Fi and BLE, battery charge supported, power efficiency and rich Interface

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Operating voltage/Power supply: 3.0 ~ 3.6 V Operating ambient temperature: 85 °C version: –40 ~ 85 °C 40 MHz Internal crystal oscillator Bluetooth V4.2 BR/EDR and Bluetooth LE specification Wi­Fi 802.11b/g/n https://www.ktron.in/product/esp32-wroom-32e/

Available Quantity : 22
Package : 41-SMD Module

ATmega2560-16U2 Board

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Package : nill

2.4GHz Dual-Mode WiFi + Bluetooth Development Board, 38PIN, Ultra-Low power consumption works perfectly with the IDE, Support LWIP protocol, Freertos, Support Three Modes: AP, STA, and AP+STA, ESP 32 is safe, reliable, and scalable to a variety of applications

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Custom IO Port:9, SPI Flash:Default 32Mbit RAM:520KB SRAM +4M PSRAM WIFI:802.11 b/g/n/e/i Bluetooth Version:4.2 Antenna Type:IPEX and PCB Input Supply Range (VDC):3.6 ~ 5 Current Dissipation (mA):180-310

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220uF 10V Tantalum Capacitor – SMD – Case D – AVX TAJD227K010RNJ

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Almost one and half-year before Raspberry Pi Foundation had launched a revolutionary update on their Single Board Computer (SBC) Pi 3 and become the most popular Microcontroller board in the community which is known as a Raspberry Pi 4. On the same timeline, the Raspberry Pi Foundation came with a new astonishing SBC named Raspberry Pi Pico. The main highlighted thing about RPi Pico is the Lowest cost and Smallest size development board from Raspberry Pi Foundation ever. On the technical side, it is equipped with an RP2040 Microcontroller chip developed by Raspberry Pi Foundation itself. RP2040 is their first dual-core ARM Cortex M0+ processor-based latest small-sized, budget-friendly microcontroller. RP2040 Microcontroller chip The RP2040 is supported with both C/C++ and micro-python, meaning that if you’re a beginner and want to learn any of these languages, the Raspberry Pico would be the best product option to start with. https://robu.in/product/raspberry-pi-pico/

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The SeeedStudio XIAO RP2040 is a tiny, high-performance microcontroller development board based on the Raspberry Pi RP2040 chip. Designed for makers and developers, it features a dual-core Arm Cortex-M0+ processor, 2MB of onboard flash storage, and 19 multifunction GPIO pins, offering versatility for a wide range of applications. Preloaded with MicroPython support, it simplifies programming for beginners and professionals alike. With its small form factor (21mm x 17.5mm), onboard RGB LED for status indication, and USB-C connectivity, the XIAO RP2040 is ideal for wearable devices, IoT projects, robotics, and compact embedded systems. Its low power consumption and robust capabilities make it a go-to choice for innovative, space-constrained designs. Features: Powerful MCU Board: Equipped with a Raspberry Pi RP2350 chip featuring dual-core, dual-architecture capability, allowing developers to switch between the dual industry-standard Arm Cortex-M33 cores @ 150MHz with FPU, and a pair of open-hardware Hazard3 RISC‑V cores Enhanced Security Features: Built-in secure boot and encrypted bootloader ensure application security. Software Support: Compatible with C/C++ and MicroPython, ensuring easy project development and prototyping. Rich Onboard Resources: Integrates an RGB LED, 2MB Flash, 520kB SRAM, and 19 multifunction GPIOs(Analog, Digital, I²C, UART, SPI, PWM). Expanded 8 New IOs: Compared to previous XIAO MCUs, the addition of 8 IO pins on the back supports more complex applications. Efficient Power Design: Ultra-low power consumption of just 27μA in sleep mode, enabling battery power supply. Direct battery voltage measurement via internal IO enhances the battery management system (BMS). Compact Thumb-Sized Design: Measuring 21 x 17.8mm, adopting Seeed Studio’s classic XIAO form factor, ideal for space-conscious applications. Production-friendly: Surface Mount Device (SMD) design with all components on the front and stamp holes on both sides, facilitating efficient mass production. Application: Smart Control Human Interface Devices (HID, such as mouse, DIY Mechanical Keyboard, joystick, console) Education Robotics Wearables https://robu.in/product/seeedstudio-xiao-rp2350-raspberry-pi-rp2350/

Available Quantity : 2
Package : Xiao

https://robu.in/product/raspberry-pi-pico-2/?gQT=2

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Package : SMD-DIP

Resettable Fuse, Surface Mount, 5 A, Fast Acting, 32 VDC, SMD

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Seeed Studio XIAO ESP32S3 Sense is built around a highly-integrated, Xtensa processor ESP32-S3R8 SoC, which supports 2.4GHz WiFi and low-power Bluetooth® BLE 5.0 dual-mode for multiple wireless applications. It has lithium battery charge management capability. As the advanced version of Seeed Studio XIAO ESP32S3, this board comes with a plug-in OV2640 camera sensor for displaying full 1600*1200 resolution. The base of it is even compatible with OV5640 for supporting up to 2592*1944 resolution. The digital microphone is also carried with the board for voice sensing and audio recognition. With powerful SoC and built-in sensors, this development board has 8MB PSRAM and 8MB FLASH on the chip, an additional SD card slot for supporting up to 32GB FAT memory. These allow the board for more programming space and bring even more possibilities into embedded ML scenarios. https://robu.in/product/seeed-studio-xiao-esp32s3-sense-2-4ghz-wi-fi-ble-5-0-ov2640-camera-sensor-digital-microphone-battery-charge-supported-rich-interface-iot-embedded-ml/

Available Quantity : 1
Package : Xiao

It is powered by a powerful ATSAMD21, similar to the Trinket M0. With a smaller footprint and faster speed compared to most Arduino boards here, the Seeeduino XIAO is perfect to integrate into almost any projects from wearables to small robots. The Seeeduino XIAO is the smallest Arduino compatible board in Seeeduino Family. It is an Arduino microcontroller that is embedded with the SAMD21 microchip with rich interfaces as well allowing it to be capable of being a tiny Dev. Board as well. Apart from the strong CPU, Seeeduino XIAO is excellent in many other functions. Despite being this small size, it has 14 GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART interface, and 1 SPI interface. Some PINs have various functions, A1/D1 to A10/D10 Pins have PWM functions and Pin A0/D0 has a function of DAC which means you can get true analog signals not PWM signals when you define it as an analog pin, that’s why 14 GPIO PINs can realize more I/O PINs and interfaces. The Seeeduino XIAO supports the USB Type-C interface which can supply power and download code. In addition, there are power pads at the back of the XIAO which support battery and make designing wearable devices easy and simple. Usually a Dev. Board as small as this size will use the chip’s inner crystal oscillator for time fixing, in order to make the clock more accurate, Seeeduino XIAO layouts an extra 32.768KHz to make the clock more stable. And of course, the Seeeduino XIAO is perfectly compatible with Arduino IDE which allows you to easily develop small projects with the help of the large and comprehensive Arduino library. https://robu.in/product/seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0/

Available Quantity : 2
Package : Xiao