CT UNO – Combines the Simplicity of the UNO Optiboot Bootloader


The CT-UNO combines the simplicity of the UNO Optiboot bootloader (which loads the program faster), the stability of the FTDI, and the R3 shield compatibility of the latest Arduino UNO R3.

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CT UNO – Combines the Simplicity of the UNO Optiboot Bootloader

Yes, this is the Cytron version of Arduino UNO; we called it CT-UNO!! * Check out the Starter Kit for Cytron UNO, which includes everything for you to get started with Arduino.

Arduino Uno Malaysia

Three years ago, we started using Arduino, and today we use a lot of Arduinos, particularly Arduino UNO. The tutorial, shield development, test jig, internal projects, and many more. We keep looking for the simplest, most stable version. We love the FTDI (USB to UART chip) on Arduino Duemilanove, and like the program loading of optiboot on UNO, so we combined both features and added some improvements into CT-UNO. It is compatible with Arduino UNO from Arduino IDE and Shield’s point of view.

The CT-UNO combines the simplicity of the UNO Optiboot bootloader (which loads the program faster), the stability of the FTDI, and the R3 shield compatibility of the latest Arduino UNO R3.

Besides, we know many are using Android phone, which comes with USB micro-B cable (power bank also require micro-B to charge); therefore, to lower the cost needed for the customer to get started, we populate the USB micro-B socket for USB connection! The program can be loaded from Arduino UNO by utilizing your Android phone USB cable. Select “Arduino UNO” from the board and choose the correct COM port; you are ready to upload the code. If you do not have the Micro-B USB cable, please get it as it is sold separately.

CT-UNO has all the fantastic features Arduino UNO offers. 14 Digital I/O pins with 6 PWM pins, 6 Analog inputs, UART, SPI, external interrupts, not to forget the I2C too. The SDA, SCL, and IOREF pins which are being broken out on UNO R3, are on CT-UNO too. We have also populated the ISP header pins (SPI and power). With this, CT-UNO will be compatible with all Arduino UNO shields.

We have enhanced the power section of CT-UNO. You can still power the CT-UNO via the DC jack, DC7V to 15V. In addition, we have upgraded the onboard voltage regulator, which can output a higher current. Of course, you can always power it using the USB cable too.

We have also moved the LEDs to the edge (near the USB socket) for better observation, especially with a shield on CT-UNO.

Oh, did I mention it? We have also added extra standard pads (2.54mm pitch to pitch) for those who want to create their shield.


  • SMD ATmega328 microcontroller with Optiboot (UNO) Bootloader.
  • USB Programming Facilitated by the Ubiquitous FTDI FT231X (more stable).
  • Input voltage: DC7-15V.
  • 1A (maximum) 5V voltage regulator.
  • 500mA (maximum) 3.3V voltage regulator.
  • 0-5V outputs with 3.3V compatible inputs.
  • 14 Digital I/O Pins (6 PWM outputs).
  • 6 Analog Inputs.
  • ISP 6-pin Header.
  • 32k Flash Memory.
  • 16MHz Clock Speed.
  • R3 Shield Compatible.
  • TX, RX, Power, pin 13 LEDs are moved to edge.
  • Utilize USB Micro-B socket.
  • White PCB!



Product Review of CT-UNO by Cytron:

  • http://arduino-for-beginners.blogspot.my/2015/01/product-review-of-ct-uno-by-cytron.html
  • http://tutorial.cytron.com.my/2015/02/04/using-isp-to-burn-bootloader-into-arduino/
  • http://tutorial.cytron.com.my/2015/03/11/using-cytron-skm53-gps-shield-with-ct-uno/

Tutorials related to Arduino: http://tutorial.cytron.com.my/category/product-guide/arduino/arduino-uno/

  • http://tutorial.cytron.com.my/2015/09/02/pwm-by-ct-uno-mdds10/
  • http://tutorial.cytron.com.my/2015/03/12/sk40c-vs-ct-uno/
  • http://tutorial.cytron.com.my/2016/10/13/how-to-make-your-line-following-robot-faster/
  • http://tutorial.cytron.com.my/2016/10/12/mobile-robot-with-esp-wifi-shield-arduino-andriod/

FTDI Drivers Download: http://www.ftdichip.com/Drivers/VCP.htm

CT-UNO Fritzing File: https://drive.google.com/file/d/0B71jedkH0IPRNG1jRmJWX2Z2NVE/view

Arduino IDE Download: http://arduino.cc/en/Main/Software


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