Description
Arduino Uno R3 CH340 is a low-cost, Arduino-compatible development board based on the ATmega328P microcontroller with a CH340 USB‑to‑serial converter, ideal for beginners, students, and hobby projects.
Key highlights
ATmega328P 8‑bit microcontroller with 32 KB Flash, 2 KB. SRAM, 1 KB EEPROM for versatile embedded applications.
CH340G USB‑to‑serial chip for reliable connection and easy programming over USB using the standard Arduino IDE.
14 digital I/O pins (6 with PWM) and 6 analog input pins for sensors, actuators, and common Arduino shields.
Operates at 5 V with recommended input 7–12 V via DC jack or USB, 16 MHz clock for stable performance.
Fully compatible pinout and form factor with Arduino Uno R3, making it a drop‑in option for most tutorials and libraries.
Create a product description of arduno uno r3 ch340 board
Arduino Uno R3 CH340 is a low-cost, Arduino-compatible development board based on the ATmega328P microcontroller with a CH340 USB‑to‑serial converter, ideal for beginners, students, and hobby projects.
Key highlights
ATmega328P 8‑bit microcontroller with 32 KB Flash, 2 KB SRAM, 1 KB EEPROM for versatile embedded applications.
CH340G USB‑to‑serial chip for reliable connection and easy programming over USB using the standard Arduino IDE.
14 digital I/O pins (6 with PWM) and 6 analog input pins for sensors, actuators, and common Arduino shields.
Operates at 5 V with recommended input 7–12 V via DC jack or USB, 16 MHz clock for stable performance.
Fully compatible pinout and form factor with Arduino Uno R3, making it a drop‑in option for most tutorials and libraries.
Detailed description
This Arduino Uno R3 CH340 board is a cost‑effective alternative to the original Uno, retaining the same ATmega328P core and standard R3 layout while replacing the ATmega16U2 USB interface with the CH340G chip. It connects to a PC via USB for code upload and serial monitoring, and works seamlessly with the official Arduino IDE and existing sketches.
With 14 digital pins (including 6 PWM outputs) and 6 analog inputs, it supports a wide range of projects such as sensor monitoring, motor control, IoT prototypes, and educational lab experiments. On‑board LEDs for power, pin 13, TX, and RX help in quick debugging and status indication during development.
Technical specifications
● Microcontroller: ATmega328 / ATmega328P.
● USB interface: CH340G USB‑to‑serial.
● Operating voltage: 5 V.
● Input voltage (recommended): 7–12 V; limit: 6–20 V.
● Digital I/O pins: 14 (6 PWM).
● Analog input pins: 6.
● Clock speed: 16 MHz.
● Flash: 32 KB (0.5 KB used by bootloader).
● SRAM: 2 KB; EEPROM: 1 KB.
● Power options: USB or DC jack; typical size ~75 x 54 x 12 mm, weight ~25–26 g.
Ideal applications
● Arduino learning kits and classroom training.
● DIY electronics, robotics, and home automation prototypes.
● Sensor interfacing, data logging, and simple IoT gateways when paired with Wi‑Fi or GSM modules.
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