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Topic: Connect ds18b20 with Terminal Sensor Adapter (Read 217 times) previous topic - next topic


I bought a Terminal Sensor Adapter based a while ago which I have used with the DS18B20 sensor in the past. But I cannot remember how it is connected and I am not sure how I can find out?

As seen on the picture it is marked with minus, plus and D. How do I find out which I use for VCC, DATA and GND? I am very new to electronics so part of my question how I would go about to find it out?

I managed to find it online, the adapter I got is this one

Any hints?


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GND is usually the most- negative point in the circuit. Connect it to -

Vcc is a generic name for "supply voltage of a flexible value." Connect to +

Maybe "D" is an abbreviation for "DATA"?
"The problem is in the code you didn't post."


"GND is usually the most- negative point in the circuit. Connect it to -"  This can fry things especially if you get involved with analog.  Assume GND is your reference point and most voltages plus or minus are referenced to that. Where to you connect the common or ground terminal of your measuring instrument to.

The letter "V" on a circuit stands for the supply voltage. The letters "CC" indicate that the supply voltage is positive or negative and does not indicate any voltage. For most logic items it is 3.5V or 5V but that is not absolute. VCC stands for "voltage at the common collector.

On Qura Naveen Namani, scientific officer at Bhabha Atomic Research Centre (2018-present)
Answered Feb 5, 2018 Basically VDD, VCC, VEE and VSS refer to the supply voltages given to a circuit.

You can identify that VDD and VSS both come in the same circuit, similarly when there is a VCC there can be VEE too.

The difference and the usage came into picture because of the different types of logic families.

For TTL logic gates, we have transistors, and we generally configure them in CE mode. So there is a power supply connected between collector and emitter (generally emitter is grounded or given negative voltage), so came Collector supply voltage (VCC) and emitter supply voltage (VEE).

Similarly for FET based circuits, we have DRAIN terminal, and SOURCE terminal, and in Common Source mode DRAIN is connected to positive supply voltage Voltage Drain Drain (VDD), and source is connected to negative supply voltage (or ground) Voltage Source Supply (VSS).

These voltage levels are absolute in the sense that they are the voltages compared with a common ground, not necessarily all the time VEE and VSS should be zero.

You can find Naveen Namani post at: https://www.quora.com/What-is-a-VDD-in-electronics#
Have Fun Good Luck, Gil
This response is to help you get started in solving your problem, not solve it for you.
Good Luck & Have Fun!


DS18B20 is definitely OneWire, which needs a pull-up on the data line, so as I said jumper it for pull-up.  Job done.
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