Price Each
Please log in to see latest prices Register / Log In
Now £14.57 £16.44
Qty Unit price
Price reduction shown applies to column 1 list price
Temporarily out of stock - back order for despatch 03/12/2014, delivery next working day
Add to a parts list Add to a parts list
  • RS Stock No. 761-7324
  • Brand Arduino
  • Mfr. Part No. A000057
  • RoHS Status
  • Customer reviews (2) Add a review
  • Back order Back order

    Add product to the order and we will despatch when the item becomes available again.
ClassificationMicrocontroller Board
Not quite what you were looking for?
Quickly find other suitable products by removing those features above which are not essential and clicking Find.

Arduino Leonardo Microcontroller Board

The Arduino Leonardo is a development board based on the ATmega32u4 microcontroller. It contains everything needed to support the microcontroller. Simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

On-chip Flash memory 32KB of which 4KB used by bootloader
On-chip SRAM 2.5KB
On-chip EEPROM 1KB
20 x GPIO pins (of which 7 can be used as PWM outputs and 12 as analogue inputs)
16MHz crystal oscillator
Micro USB connection, power jack, an ICSP header, and a reset button
Standard Arduino format to accept Arduino Shields

AVR Microcontrollers, Atmel

Customer reviews Average customer rating  ( 2 Customer reviews )

Add a review - Register / Log In

Any customer reviews posted constitute the statements of the customer and are not the statements of RS. RS is not responsible for the accuracy or completeness of any customer review, and is not liable for any loss or damage which may result from any customer review.

For the prototyping of embedded, lowest-cost projects the Leonardo outperforms the competition in terms of input/output/special functions per £ pound. With both analogue and digital inputs and outputd, including PWM on several pins, sPI and I2C as well as USB and compatible with shield expansion boards the Leonardo has quickly become the new replacement for the UNO, haivng rather more to offer, with same size shield (PCB) and pin-out compatibility. Note: whist pin locations match, some pin functions have changed - so be sure to adapt your code to reflect the different pin-outs between the Leonardo and UNO, etc. Very fast to learn to program, no special tools needed and free IDE for Windows/MAC and Linux users to program in. very similar syntax and structure to C++, so it also makes a good starting point for those wishing to learn more and go onto PIC chips at a lter date, for example. Internet source code examples widely available with open-source licencing. A really good addition to the popular Aduino range. Has become both my entry-point board as well as my first choice for the more simple, low-speed, smaller code-size (up to 12kB) projects. May struggle to replicate speech, for example - unlike a DsPIC - but at £16 what do you expect ! Easy to learn to use from scratch, using one website- the Arduino playground ( and no hidden costs except a micro to USB cable for programming - unless you have a Kindle or equivalent charging cable laying around


Reviewed by:

Created on:
Jan 18, 2013

2 of 2 people found this review helpful.

Did you find this review useful? Yes | No
Taking the plunge
Great project, nice and compact - I was suprised how small it was. OK, I've been making custom (ten-off) PWM boards for controlling small motor speeds, but they are not the most advanced design, have limits and, frankly - could do with jazzing up. I chose a PIC first - but got bogged down with the programming. Then I looked at Arduino. The Leanardo has much more than I need, but I can change our potentiometer operated PWM circuit to a nicer, up to date touch-pad (up and down touch-pad pushbuttons). I can also add a digital display to show speed (in % or rpm - changing range with the same two-pad pushbuttons. I also intend to add battery power level, as I can measure power on one of the inputs, and display charge (V or % remaining) on the display. More important, I learned how to programme it in less than a week. OK I haven't got the display connected yet, but simulaitons work fine. An easy to learn powerful board


Reviewed by:

Created on:
Nov 14, 2012

1 of 1 people found this review helpful.

Did you find this review useful? Yes | No
Frequently Asked Questions
Need some help?
Call our Customer Services team on:
08457 201201