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Arduino Uno R3 CH340G Development compatible Board with Micro USB port
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The Arduino Uno R3 CH340G ATmega328p Development Board is a low-cost and reliable version of the popular Uno R3 platform. This arduino uno ch340g variant is assembled with the CH340 Micro-USB to Serial converter chip instead of the Atmega16U2 chip, making it a more affordable alternative without compromising performance.
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 Micro-USB port. During normal operation, this Arduino Uno R3 board is identical to the more expensive version without the CH340 chip.
If you are comparing options, the arduino uno r3 price india 2026 varies depending on the chipset and build quality. CH340G-based boards like this one offer a cost-effective alternative while maintaining core functionality.
This model is also available as a robocraze uno r3 smd board compatible with arduino | development board with usb cable, making it ideal for users who want a ready-to-use solution for projects, learning, and prototyping.
1. Two rows of holes for the pins (Male and Female). So it can be connected with normal Female Jumpers.
2. Additional 3 rows of the holes for wiring.
3. Changes to the DIP package of ATMEGA328P to flat package.
4. CH340G replace ATmega16U2
1 x Arduino Uno R3 Board with Micro USB port compatible with Arduino
1 x Male Jumper Header
| Microcontroller | ATmega328p |
| Input Voltage | 7-12V |
| Operating Voltage | 5V |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Inputs | 6 |
| Flash Memory | 32KB |
| Clock Speed | 16MHz |
| Dimensions | 7.5 x 5.4 x 1.2cms |
| Weight | 26 grams |
CH340C and CH340G are both USB to serial converter ICs that are commonly used in electronic projects and devices. The main difference between these two chips is their packaging and pinout.
The CH340C is a surface-mount device that comes in a 16-pin SSOP package. It has a different pinout than the CH340G, which is a through-hole device that comes in an 16-pin DIP package. The CH340G is more commonly used in Arduino boards due to its easy-to-use through-hole package, while the CH340C is often used in smaller, more compact devices that require surface-mount components.
In terms of functionality, both chips provide similar USB-to-serial conversion capabilities and can be used to communicate with a variety of devices and microcontrollers. However, the CH340C has some additional features such as a built-in crystal oscillator and a programmable EEPROM, which can be useful in certain applications
Yes, the Arduino Uno CH340 is compatible with the Arduino Uno R3 and is considered a low-cost version of the popular Arduino Uno R3. The only difference is that the CH340 driver needs to be installed, which can be downloaded from the manufacturer's website. The CH340 Arduino board contains an ATmega328P-U-TH chip, which differs from the classic ATmega328P-PU in official Arduino Uno Rev3 boards. There are also other development boards that are Arduino-compatible and use the CH340 chip.
The UNO R3 CH340G development board is widely used for electronics projects, robotics prototyping, and learning embedded systems. It is compatible with Arduino and is ideal for programming microcontrollers, connecting sensors, controlling motors, or creating interactive devices. Makers, students, and hobbyists prefer the UNO R3 CH340G for its affordability, USB connectivity, and reliability in DIY electronics and automation projects.
The main difference is the USB-to-serial chip. The CH340G UNO uses the CH340G chip, while the original Arduino UNO uses the Atmega16U2 interface. This makes the CH340G UNO more affordable. Functionality remains the same, and both boards work with Arduino IDE and libraries. The only extra step with the CH340G UNO is installing the CH340G driver for USB communication.
Yes, you need to install CH340G drivers to connect the UNO R3 CH340G development board to your computer. The CH340G chip manages the USB-to-serial communication, and most operating systems require the driver for proper recognition. Once installed, the board will work seamlessly with the Arduino IDE, letting you upload code and monitor serial data.
Yes, the UNO R3 CH340G is fully compatible with Arduino IDE and supports all standard Arduino libraries. You can write, upload, and run sketches just like on the original Arduino UNO. The key requirement is installing the CH340G USB driver. After that, you can enjoy seamless integration with existing Arduino projects and a wide ecosystem of sensors and modules.
The UNO R3 CH340G features an ATmega328P microcontroller, 14 digital I/O pins (6 PWM), 6 analog inputs, 16 MHz clock frequency, 32 KB flash memory, and operates at 5V. It uses the CH340G USB-to-serial chip for computer connection. The board includes a standard USB-B port, can be powered via USB or external adapter, and is shield-compatible for various Arduino projects.