Let's Make Robots!
Simple breakout board for the SparkFun MQ-3, MQ-4, MQ-6 and MQ-7 gas sensors.  Read more
Price: $18.1 USD
The Dual Relay Board allows digital outputs of the InterfaceKit 8/8/8, the Text LCD 0o control larger loads and devices like AC or DC motors, electromagnets, … Read more
Price: $2.85 USD
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! Read more
Price: $19.95 USD

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The Parallax PING sensor is cool, but it's more useful when mounted on a servo so it can scan the environment. Read more
Price: $2.05 USD
Use this 60cm/24" sensor cable to plug in your Phidgets sensor to the Interface Kit 8/8/8. Read more
Price: $8.95 USD
The Devantech SRF10 is a great, tiny sensor, but hard to mount unless if you have this mounting kit! Read more