Archive.png This article or section documents something not included in the current version of Scratch (3.0). It is only useful from a historical perspective.
SandCastleIcon.png This article has links to websites or programs not trusted by Scratch or hosted by Wikipedia. Remember to stay safe while using the internet, as we cannot guarantee the safety of other websites.
"Sensor Boards" redirects here. For the discussion forum, see Connecting to the Physical World (forum). For other sensor boards, see Extension.
A diagram of a PicoBoard.
A red PicoBoard.

A PicoBoard was a piece of hardware that allowed Scratch projects to interact with the outside world. Currently, it works on Scratch 1.4 and Scratch 2.0. It was removed in Scratch 3.0, with the new extensions being favored more. The PicoBoard can be ordered from SparkFun. The schematics and additional information are also available on that site. It was previously called ScratchBoard. The Connecting to the Physical World forum is a place dedicated to discussions about the PicoBoard and other real-world Scratch sensors.

Note Caution: Before buying a PicoBoard, note that it will not work with Scratch 3.0.

Blocks Used with the PicoBoard

Main article: PicoBoard Blocks
Note Note: Click on a block to visit its individual wiki page.

The blocks for PicoBoards each had at least one drop-down menu with other options (see right).


The PicoBoard had the following features:

  • Slider: Controls the slider value.
  • Light Sensor: Changes the light sensor value depending on the amount of light it detects.
  • Button: Can be pressed to control the button pressed value (true or false).
  • Sound Sensor: Changes the sound value depending on the amount of sound it detects.
  • Alligator Clips: Changes the value of various variables that detect whether the alligator clips are connected, and how much resistance each connection has.

Setting up a PicoBoard

To set up a PicoBoard, follow these steps:

  1. Get/buy a PicoBoard.
  2. Download the appropriate driver depending on whether the PicoBoard is a Serial or USB PicoBoard (all PicoBoards sold after June 2009 are USB PicoBoards).[1]
  3. Plug the PicoBoard into the computer.
  4. Read Getting Started with PicoBoards.


A PicoBoard can be bought here. They cost about $45 USD, international shipping is $7.

Note Caution: Ask a parent/guardian before buying a PicoBoard.

PicoBoard Starter Kit

The PicoBoard Starter Kit.
Two concave buttons.

The PicoBoard Starter Kit was a kit for the PicoBoard. It cannot be purchased anymore, as SparkFun has retired it.[2] It included:

  • 1× PicoBoard
  • 1× Gear Hobby Motor
  • 1× Red Concave Button
  • 1× Green Concave Button
  • 1× Toggle Switch
  • 1× Linear 10k Ohm Rotary Potentiometer
  • 1× Square Force Sensitive Resistor
  • 1× 0.709" Magnet Disk
  • 1× Insulated Reed Switch
  • 1× 10K Thermistor
  • 4× Tall Silicone Bumpers
  • 4× 2.5mm Audio Cable to Dual Alligator Clips
  • 10× Multicolored Alligator Test Leads
  • 10× 20 AWG 6" M/M Jumper Wires


Note Caution: Ask a parent/guardian before buying a PicoBoard Starter Kit.

See Also


Cookies help us deliver our services. By using our services, you agree to our use of cookies.