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Home › Magazines › 2006 › July › GBPLC I2C I/O Box

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GBPLC I2C I/O Box

Analogue, digital I/O plus TXT (SMS)

Published in issue 356, July 2006

GBPLC I2C I/O Box
To use the Nintendo GameBoy as a system control centre, you need an I2C interface in addition to the special plug-in card. The circuit presented here is cut out for the job. It has a total of 24 inputs and outputs, including 4 analogue inputs and 8 digital inputs. That’s sufficient to control roller shutters, outside lighting, curtains, an alarm system, the central heating system and even more, possibly even remotely via TXT (SMS) messages.

Components

Relevant websites

Resistors

R1-R19 = 4k7

R20-R23 = 330

Capacitors

C1-C16,C18,C19 = 100nF (SMD 0805)

C17 = 10µF 25V radial

Semiconductors

D1 = LM336Z (TO92 case)

D2 = 1N4001

T1-T8 = BC850

T9-T16 = IRFZ34N

IC1 = 7805

IC2 = CA3130

IC3, IC5 = PCF8574T

IC4 = PCF8591T

IC6,IC7 = P82B715TD

Miscellaneous

K1 = 9-way sub-D plug (male), angled pins, PCB mount *

K2-K17,K19-K23 = PCB terminal block, lead pitch 5mm

K18 = 32-way DIL socket *

K24 = mains adaptor DC socket, PCB mount (CUI Inc. type PJ-002B, Digikey # CP-002B-ND)

K25, K26 = 20-pin (double row) socket, pitch 0.1”

K27 = USB connector type B

K28 = USB connector type A

PCB, order code 060098-1

Ready assembled and tested board, order code 060098-91

* only required in combination with SMS chip

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (u0607024.pdf)
10 Elektor Credits
PCB layout (060098-PCB.pdf)
Free download
 

Order from Elektor 
PCB, bare
060098-1 (USD 30.40)
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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