Uno R3 CH340G ATmega328p Development Board Compatible with Arduino

(45 customer reviews)

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Approx Restocking Date: 25 to 30 Days
SKU: 44497
  1. Microcontroller ATmega328 (SMD) – Interface CH340G
  2. Operating Voltage: 5V
  3. Input Voltage (recommended): 7-12V
  4. Input Voltage (limits): 5-20V
  5. Digital I / O Pins 14 (of which 6 provide PWM output)
  6. Analog Input Pins: 6


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Category: Boards Compatible with Arduino
Tags: Arduino, Development Board, Uno, Microcontroller, Arduino UNO, Robot Brain, Arduino with USB Cable, Mega

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.

Main changes from the older version:

1. Two rows of the 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

How to use:

1. Download the IDE Arduino
Link: (Copy to open)
2. Download the USB chip driver
Link: (Copy to open)
3. Plug in UNO development board, the driver will be installed automatically
4. Select the UNO from the die
5. Select the COM port
6. The best choice first, Arduino comes with routine procedures, burn into it.

Package Includes :

1 x Uno R3 CH340G ATmega328p Development Board Compatible with Arduino
1 x set of male Jumper Header.

Model Type

Arduino Uno R3

Microcontroller Chip

ATmega328 (SMD) – Interface CH340G

Operating Voltage (VDC)


Input Voltage(Recommended)


Input Voltage (limit)


Analog I/O Pins


Digital I/O Pins

14 (of which 6 provide PWM output)

PWM Digital I/O Pins


DC Current for 3.3V Pin (mA)


DC Current per I/O Pin (mA)


Clock Speed

16 MHz




1 KB (ATmega328)

Flash Memory

32 KB

Power Supply Option

DC Jack or USB

On Board LEDs

On/Off, L (PIN 13), TX, RX

Operating Temperature (°C)

-40 to 90

Dimensions (LxWxH) mm

75 x 54 x 12

Weight (g):


Shipping Weight 0.05 kg
Shipping Dimensions 10 × 6 × 4 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 45 reviews

4.8 overall

Add a review

  1. Rishin PV (verified owner)

    Good board, received in good packing

    Rishin PV

  2. Rishin PV (verified owner)

    Good board

    Rishin PV

  3. harish90smart (verified owner)

    Good product and nice packaging and delivery


  4. harish90smart (verified owner)

    Very good product and best price.. really satisfied


  5. narasimhaaarao (verified owner)

    Good product at a reasonable price


  6. Madhusudhan (verified owner)

    Best price and best product… Sabse best hai robu electronic items k liye genuine maal aya hai mere pass sara


  7. patilnm810 (verified owner)



  8. josephsharon051 (verified owner)



  9. gaganmreddy8 (verified owner)

    It works perfectly


  10. Satyanarayana Reddy Padala (verified owner)

    Very easy and simple to install. Need to check the correct port. Perfectly working for my experiment.

    Satyanarayana Reddy Padala

  11. knp2312 (verified owner)

    Best product. provides genuine products. yet this arduino is a clone… but it works perfectly… for me the CH#$) was not a problem… my windows 10 recognized it without any driver installation… Also price is reasonable… works great

    thanks ROBU


  12. satyaprateek772



  13. Dishan N R (verified owner)

    Superb Product but giving it 4 stars because the Male Header Pins were not soldered and given in a separate pack, which created a problem for me as I needed extra pins.

    Dishan N R

  14. SIDDHARTHHAOBIJAM (verified owner)

    nice thanks , I am loving it and have to admit Indian speed post is pretty fast too !


  15. Rajneesh Kumar (verified owner)

    Great product with amazing pin setup

    Rajneesh Kumar

  16. imrankhan96799 (verified owner)

    It works great but intialy i had faced some problems. I had installed the ch340g drivers provided by but my PC still didnt recognize the arduino and only showed errors while uploading. But 10 or 15 minutes later, the drivers got activated and the uno got recognised. Ever since then it has been 2 weeks , i am using it happily. If you face a similar problem after installing the drivers , the please give the drivers some time to get activated and then it should work flawlessly 🙂


  17. khuswant983 (verified owner)

    Clone Arduino but working great???


  18. amit.19mar (verified owner)

    Good quality board ? well worked.


  19. iversions (verified owner)

    Better than original because of additional vcc,gnd,i2c pins. i have used it extensively to prototype and then move my project to a promini. delivered on time.


  20. Dinesh Kumar (verified owner)

    Excellent product

    Dinesh Kumar

  21. me2sekar (verified owner)

    received the product early.excellent packing and the product works fine.


  22. karthikraja

    simple cost


  23. uhaish (verified owner)

    perfect , I used it for flashing ender 3 bootloader and it worked flawlessly .


  24. Anshul Kumar (verified owner)

    Very good type of arduino and at very best price

    Anshul Kumar

  25. NAGARAVI YARLAGADDA (verified owner)

    Board working fine


  26. subhra.mukherjee.kol (verified owner)

    Nice product, but no timer related sketch can run on it perfectly. As it may have clock frequency not matched as that of arduino uno..


  27. rahulahirwal97 (verified owner)

    Good product.


  28. Antony John (verified owner)

    Works as good as my genuine Uno board. No problems!

    Antony John

  29. svohra5132 (verified owner)

    Good product!


  30. Shristi Das Biswas (verified owner)

    Works perfectly.

    Shristi Das Biswas

  31. Shristi Das Biswas (verified owner)

    Works perfectly.

    Shristi Das Biswas



  33. Mitwal (verified owner)

    Very nice Product



    Affordable price & very important for electronics projects.


  35. Basu gupta (verified owner)

    Nice product

    Basu gupta

  36. Shreyans Mehta (verified owner)

    Excellent quality. works exceptionally well

    Shreyans Mehta

  37. Rajneesh Kumar (verified owner)

    Perfect!! Works as others. Gives more power and I/O pins for connection. This is the best part.

    Rajneesh Kumar

  38. Likhitha D (verified owner)


    Likhitha D

  39. Prasenjit samanta (verified owner)

    Working fine but got a little manufacturer ing dispute product a set pin was solderd incorrectly so a little bit disappointed.

    Prasenjit samanta

  40. Mayur badam (verified owner)

    No problem with the product but it is not the original Arduino board you won’t get the Arduino name on it

    Mayur badam

  41. Sholi (verified owner)

    works,perfectly fine as other Arduinos


  42. MATLAB Helper Team (verified owner)

    Great Product, no extra effort for setting up is required! Using it along with MATLAB 2018a, which also works superbly!

    MATLAB Helper Team

  43. rupandey642 (verified owner)

    Perfect product. will soon buy another.


  44. Kishor Durve (verified owner)

    Great product, started within 10 minutes with no hiccups. Super fast delivery.

    Kishor Durve

  45. Muktesh Chander (verified owner)

    Excellent product. Have used many.

    Muktesh Chander

Datasheet of Arduino UNO R3 with ch340G.

Uno R3 CH340G ATmega328p Development Board Compatible with Arduino

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Questions and answers of the customers

    can this be programmed using USB to TTL converter ... Read more
  1. 0 votes
    Q can this be programmed using USB to TTL converter using Rx/Tx pins instead of USB connector? answer now
    Asked by raomaneesh88 on December 2, 2020 3:56 pm
    A Yes, It can be done.
  2. Hi , Orange 12V 2A Power Supply with 5.5mm DC Plug... Read more
  3. 0 votes
    Q Hi , Orange 12V 2A Power Supply with 5.5mm DC Plug Adapter. This Item is also listed "add togethe...... Read more answer now
    Asked by ytalekar on August 10, 2020 9:22 am

    yes, It has input voltage capacity from 3.3 -12... Read more

  4. We can connect motor shield
  5. 3 votes
    Q We can connect motor shield answer now
    Asked by evcreative99 on March 8, 2020 8:03 am

    yes, we can  connect it to motor shield.

Only registered users are eligible to enter questions
Country Of Origin: China

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