Arduino Uno R3 CH340G Development compatible Board with Micro USB port
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The Arduino Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 Micro-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 Micro-USB port. During normal operation, this Arduino Uno R3 board is identical to the more expensive version without the CH340 chip.
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.
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