I have the PDIP package and they are quite slow to respond, especially when cooling down from high temperatures. I think the smaller packages (e.g. SOIC) may be better in this respect, although for typical household temperatures a PDIP is probably OK.
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Note that if you connect an LED directly between pin 3 and GND, the current flow heats up the chip significantly (around 10 degrees in my case). I've added a resistor in this example, but in a real world application it is probably better to connect to a buffer/transistor/PIC pin to minimise the amount of current flowing.
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I've made a library for the DS1621 TWI (I2C) temperature sensor/thermostat from Maxim (Dallas).
Just putting this here for now, demo video to follow once the camera battery has recharged!
Last edit: Peter 2017-10-22
Nice one Peter! Will have to get a couple to play with now. Thanks for the effort, we can't have enough libraries, thats for sure!
I have the PDIP package and they are quite slow to respond, especially when cooling down from high temperatures. I think the smaller packages (e.g. SOIC) may be better in this respect, although for typical household temperatures a PDIP is probably OK.
Basic demonstration showing temperature reading:
And a video showing the thermostat/alarm mode.
Note that if you connect an LED directly between pin 3 and GND, the current flow heats up the chip significantly (around 10 degrees in my case). I've added a resistor in this example, but in a real world application it is probably better to connect to a buffer/transistor/PIC pin to minimise the amount of current flowing.
The lib must have taken a lot of work. Great job. I couldn't have done that.