Tibbit #36: 3-Axis Accelerometer, C1

Description

Tibbit #10: Medium-Power 5V Supply, 12V Input, M1T
TIBBIT_36
This is a Tibbit module — part of the Tibbo Project System that allows you to build your own custom embedded device with only the components you need. Start with a
Tibbo Project PCB
, add
Tibbits
like this one, then place the built design into a
Tibbo Project Box
to complete your product.
Tibbit #36: 3-axis accelerometer (shock sensor).
This Tibbit contains an ADXL312 accelerometer IC with I2C interface. The sensor is implemented as the
C1
device.
The module measures acceleration in the ±12G range, simultaneously in three axes, and with
2.9mG resolution.
This
C1
device requires that Tibbit
#00-3
is installed in the neighboring
M
socket. #00-3 provides two direct lines for I2C comms, as well as the ground and +5V power for the
ADXL312 IC.
Form:
C1
Power:
5V consumes 2mA
Sample Project
The use of this and other I2C Tibbits is illustrated by a group of Tibbo BASIC
test projects
.
C1 Tibbit Modules Overview
C1
Tibbits are single-width "connectors" occupying one standard
C
socket on a Tibbo Project PCB (i.e.
TPP2
or
TPP3
). They have roughly the same width and height as
M1T
devices: 17.4mm wide usually and 17.5mm high. Their depth varies depending on the type of connector.
Some
C1
Tibbits are just connectors such as a power jack, terminal block, etc. Others "sense" the outside world: temperature, humidity, vibration, IR, etc.
C1
Tibbits have a single row of 4 pins. All four pins are I/O lines that connect directly to four I/O lines of the adjacent
M1
socket.
There are no dedicated ground and power pins. Many
C1
Tibbits don't need ground and power anyway; they house connectors and nothing else.
If an attached external device needs ground and/or power, then these must come from the adjacent
M
Tibbit. Ground and power are also necessary for "sensor"
C1
Tibbits.