I2C-It Y-Cable Harness set




$2.84 ea.
$2.70 ea.

The I2C-It is a great sensor, and is only more so when used as part of a greater chain. Use the I2C-It Cable harness and pin set to set up multiple sensors!

Description [Hide]

The I2C-It uses the really convenient I2C / TWI protocol to links several sensors to a single I/O pin, and with many new microcontrollers supporting this feature out-of-the-box, it's a great way to get many sensors onto your device. We've made it even simpler by having a custom Y-cable harness that lets you link two I2C-It modules to any I2C/TWI master device.

This bundle includes:

  • I2C-It cable, featuring:
    • A 5-position Master plug (Devantech standard), branching to...
    • Two 4-position slave plugs designed to the I2C-It pinout
    • Each branch of the "Y" measures 30cm (12")
    • AWG28x8C wire
  • 1 x 5 pin header strip (snappable)
  • 1 x 9 pin header strip (snappable)

The slave plug is on standard 0.1" spacing, with the pinout matching the I2C-It sensor:

Vcc / SDA / SCL / Ground

The master plug is also on standard 0.1" spacing, but with 5 positions to match the Devantech I2C cable standard:

Vcc / SDA / SCL / (not used) / Ground

You're not limited to using this cable only for your I2C-It. If your device doesn't use the I2C-It or Devantech I2C / TWI connection standards, it's quite simple to lift the latch fingers in the plug holder, slide the sockets out, and re-arrange the pinout to whatever you prefer. For instance, you can easily modify it to use the "BlinkM" wiring standard of:

BlinkM Smart LED pinout:
Ground / Vcc / SDA / SCL


Note: You may have to decrease the size of your I2C / TWI pull-up resistors when using this cable. Our experiments show 4.7k on the SCL / SDA lines work well enough for slaving from one slave port to the other connected to Freeduino SB / Arduino (that's 24 inches total).

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