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INFO - FAQ - CC2-Forum - CCPro-Forum |
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Hallo I want to measure 2 temp. and store it in the CF card. One of them is the temperature outside. For this I need a cable of +/- 8 meters. I donÂ’t know anything of a 12C Expander. But I want to know more about this. I have connected 1 ds.1621 and pin1 on port9, pin2 on port10,pin4 on min and pin5 on +5volt thatÂ’s all. Hans > Hello, > > 50 cm should not give any problems but, if I remember correctly, 2 meters is about the maximum length. > For longer lengths an I2C Bus Expander is needed but I have no experience with the Expander. > > Another thought about the IIC Error: > If you connected both DS1621Â’s on the IIC bus and both DS1621Â’s have the same address then you could get an IIC ERROR message or corrupt data. > Both DS1621Â’s need there own unique address, look thru the data sheet to see which pins to use to adjust the address. > > Greetings, > H.J. Windt |
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