I2CChip.com : I2C, SPI, 1Wire Interfacing Made Easy

Thousands of low-cost integrated circuits use serial buses: I2CChip talks to them all from your PC

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I2C Starter Kit $89.95

I2C Starter Kit is the fast, easy way to get up to speed with I2C and the I2C2PC adaptor.

• I2C2PC Adaptor
• 8 Bit I/O port with LED's
• I2C Cables & Connectors
• USB Cable
• Zip Pouch for storage
• Training Videos

I2C-2-PC USB/RS232 Adaptor using BL233 $69.95

• Both USB and RS232 interfaces. USB for speed. RS232 for distance!
• 3 Separate I2C Buses
• I2C, SPI & Dallas 1-Wire interfaces
• Simple ASCII protocol is easy to use with any OS, and any programming language.
• Fully self contained, includes on board 5V and 3.3V power supply OR USB powered
• Galvanic Isolation for safety - protect your PC from damage
• Simple stand-alone functions, power on initialisation of I2C devices without PC present
• Watchdog function without PC
• Better and more economical
• Compact in an attractive enclosure: not a bare-board

BL233 I2C to Serial Interface IC,

DIP & SO 

Just the Bare IC to build into your own OEM products. At $3.95 in small quantities, and less in volume, you can build profitable volume products around the BL233.

• 3 Serial Buses
• CMOS and TTL compatible buses, 2.5-5V
• All serial buses: I2C, SPI, 1-Wire
• Works as simple 8 bit I/O port: Drive LED's and relays directly
• Store POWER-ON, WATCHDOG-TIMEOUT and INTERRUPT macros internally: Runs even when the PC doesn't.
• Simple ASCII commands: No API's, No DLL's needed. No hidden software costs.

I2C Bus Connectors and Cables

Free Postage for I2C Bus connector and cable orders

All our products use the small reliable Micro-match 6 pin connector. For your convenience we have connectors and built up cables available.

• Connector and Bus Pinout Learn about our pinout, and those of lots of others.
• Information about Crosstalk, Pullups, Bus Length, Cable Types

Even if you don't use our adaptors, you can use our well thought out pinout and, compact connector for I2C and SPI bus devices.

Free Software: Talk I2C out-of-the-box

Our free Realterm  software talks directly to the I2C-2-PC / BL233. You can just talk write and read directly from any new serial bus IC with no programming at all.

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I2C Slave Modules

Sip Modules: SIP modules as small, simple pcbs with a single row of I/O pins along one edge, and our standard I2C connector. The only pins you need to wire up, are the I/O pins you are using. Everything else is done for you. Because the pins are 0.1" spaced, they are easy to put on proto-boards of all kinds. You can even put standard 0.1" plugs on them. 

Modules:

• 8 bit I/O port with PCF8574 
• 12 Bit +/- 10V Precision ADC with Current Sensor
• 8 Push buttons + 8 LED's using PCF8574 
• 8 Bit ADC, DAC
• 6 Digit Event Counter
• 4 Way Bus switch for bus expansion
• 4 digit Numeric Displays Numeric displays are unbeatable for readability! LED and LCD, 0.3", 0.56", 0.8", 1.0", 2.3", 4.0"
• Alphanumeric LCD Adaptor : A simple interface to standard LCD modulesI