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Tibbit #41: 8-bit Port Extender, C1 US$14.00

TIBBIT_41
Tibbit #41: 8-bit Port Extender, C1


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 #41: 8-bit port (supplied with 200mm cable).

This Tibbit has an MCP23008 eight-bit port expander IC from Microchip. Refer to the Microchip MCP23008 Page for a datasheet and other documentation related to the operation of this IC.

This C1 Tibbit requires that you have Tibbit #00_3 installed in the neighboring M socket.

To simplify wiring, a 200mm cable is included with this Tibbit.

  • Form: C1
  • Power: 5V; consumes 40mA
  • Requires: #00_3

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.


This product was added to our catalog on Tuesday 23 December, 2014.

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