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I'm following this guide for a temperature sensor programme and I'm not getting very far with it, at step 3A I seem to have issues finding the sensor. When I enter cd /sys/bus/w1/devices/ followed by the ls as instructed I get nothing at all, just pi@raspberrypi /sys/bus... again on the next command line.

I then took a look around and working through the various steps on this site I still find myself nowhere closer to getting the thing working. Step 2, the blacklist file was empty. Step 3, file includes the required lines now. Step 4, i2c tools already at the newest version and user pi already a member of i2c.

i2cdetect -y 1 will display:

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 70: -- -- -- -- -- -- -- --

even when the gpio pins are connected to the circuit with the sensor. i2cdetect -y 0 or other numbers will show error: could not open file /dev/i2c/-0: no such file or dictionary

Note, I am using Jessie, the update step in the first link says wheezy, I followed it replacing Wheezy for Jessie, same results as above, then changed it to follow the guide exactly (using Wheezy), same as above.

Note also that if I type sudo raspi-config, go to advanced options, there is no options to enable/disable the i2c or spi, advanced options contains only 6 options, Expand file system, overscan, memory split, audio, resolution, gl driver.

Edit: TSIC 306 TO92 is the model number, IST 15 T01C is printed on the actual sensor itself.

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The TSIC 306 uses a protocol called digital ZACWire.

It is not compatible with the I2C bus or the Dallas 1-wire bus protocols.

Have a look at this raspberrypi.org forum thread.

https://www.raspberrypi.org/forums/viewtopic.php?t=30325&p=526369

It appears that someone got it to work with my pigpio library.

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