Breadboard
Breadboard
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Problem: How do you plug several sensors into one I/O pin?
Problem: How do you plug several sensors into one I/O pin?
Why?
Why?
If you have multiple sensors to connect to one pin, you have to get creative. This is most helpful when using sensors that communicate using I2C (or similar) and you don't have enough I2C pins for all of them. What you need to to is use a breadboard to basically give you more pins to connect to. On a breadboard, rows of holes are all connected so if you plug into one, anything you plug into others in that row will also be connected. Below we'll wire in an LCD and an Accelerometer. First, connect the I2C pins to the breadboard, then connect each component to the correct rows on the breadboard.
Wiring with a breadboard
Wiring with a breadboard
First, wire the I2C pins to open rows on the breadboard
Next, connect your first sensor
Wire other sensor, but don't disconnect your first sensor, shown here for ease of wire tracing
Both sensors wired correctly to I2C
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