Parallax BASIC Stamp 2 Module #BS2-IC

Parallax BASIC Stamp 2 Module #BS2-IC
Pololu item #: 1600 5 in stock

Price break Unit price (US$)
1 49.00

backorders allowed

It’s amazing what you can accomplish with this well-proven microcontroller and its simple programming language, PBASIC. Widely used in educational, hobby, and industrial applications, all vital components (processor, clock source, memory, power regulator) are provided on the BS2’s tiny PCB; just connect power and go!

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The BASIC Stamp 2 module serves as the brains inside of electronics projects and applications that require a programmable microcontroller. It is able to control and monitor timers, keypads, motors, sensors, switches, relays, lights, and more. Programming is performed in an easy-to-learn language called PBASIC, which is detailed in the starter kit that includes the BASIC Stamp 2, the BASIC Stamp Discovery Kit.

The BS2-IC is widely used in educational, hobby, and industrial applications. Plentiful resources including documentation, source code, and customer projects are available online and in print.


  • Processor speed: 20 MHz
  • Program execution speed: ~4,000 PBASIC instructions/sec.
  • RAM size: 32 bytes (6 I/0, 26 variable)
  • EEPROM (program) size: 2K bytes; ~500 PBASIC instructions
  • Number of I/O pins: 16 + 2 dedicated serial
  • Current draw @ 5 VDC: 3mA run, 50 μA sleep
  • Source/sink current per I/O: 20 mA / 25 mA
  • Source/sink current per unit: 40 mA / 50 mA per 8 I/O pins
  • PBASIC commands: 42
  • Package: 24-pin DIP
  • Industrial-rated since Rev J

Key Specifications

  • Power requirements: 5.5 to 15 VDC (Vin), or 5 VDC (Vdd)
  • Communication: serial (9600 baud for programming)
  • Dimensions: 1.20" x 0.63" x 0.15" (30.0 x 16.0 x 3.81 mm)
  • Operating temperature: -40 to +185 °F (-40 to +85 °C)

Getting Started

Note: If you are new to electronics and programming, we recommend starting with the BASIC Stamp Discovery Kit, an excellent introductory kit that comes with everything you need to get started with BASIC Stamp programming and electronics, including a BASIC Stamp 2 module, two printed booklets, and all the basic electronics components necessary to build dozens of fun projects.

To get started with the BASIC stamp you will need the following:

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