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Gravity: IO Expansion Shield for Bluno M3

SKU: DFR0371

$22.07 AUD, inc GST
$20.06 AUD, exc GST

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Gravity: IO Expansion Shield for Bluno M3
22.07 AUD

SKU: DFR0371

$22.07 AUD, inc GST
$20.06 AUD, exc GST
In stock, with a short lead time. 47 units dispatch in 3 to 5 days (in addition to the shipping method you choose). Our timing and stock is accurate. Delivery to you by Fri, 22nd of Dec with Express Post within Australia.


Say goodbye to messy cables! This IO shield is a powerful expansion shield for the Bluno M3. The breakouts for digital pins range from D0 to D38, including 5 UARTS, 8 PWM pins and 8 analog pins. The IO Expansion shield uses a convenient color coded 3 pin format for signal, voltage and ground that is useful if used with a large range of devices. The IO expansion shield also integrates an external power connector for servos - if you need to power a large array of servos, use the screw terminals to connect your power supply and drive them directly from your Bluno M3. It will switch to the right power source automatically. An intelligent power regulator allows you to connect a battery and USB cable simultaneously, and an on-board voltage switch makes it easy to change the output voltage, making 3.3V or 5V sensors compatible.

Bluno M3 + IO Expansion Shield


  • Interface:
    • 39 GPIO pins with color-coded headers
    • 8 PWM pins
    • 8 Analog Input pins
    • 5 UARTS
    • 1 I2C/IIC
    • 1 SPI
    • External power connector for servos
    • 3.3V/5V power switch
  • Dimensions: 69mm * 54mm
  • Weight: 40g


Parts List

  • IO Expansion Shield for Bluno M3 x1
Documentation and Resources:

Product Comments

We deliver Australia-wide with these options:

  • $3 for Small Items (4-6 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (1-2 days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove Parade
NSW, 2289

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.