Pull-up resistor on bread board

Question

Hi,

I'm new to the designing circuits. I would like to connect two Waterproof DS18B20 Digital temperature sensors and measure the difference. http://www.adafruit.com/products/381 I understand the concept of the bread board, but I'm having trouble visualizing setting up the pullup resistor pictured here: http://www.hacktronics.com/images/arduino_ds18b20_connection.jpg

I would usually expriment with something like this on my own, but there was a waring that said if wired wrong could fry the board.....and I just got it

Thanks in advance!

dmaruska · Accepted Answer

Hi. When looking at the DS18B20, there are 3 leads. WITH the FLAT side of the part facing you and the three leads point down towards your feet. The leads are numbered as shown in the drawing you posted. The #2 and #3 leads will have the resistor leads connected to the same leads. Your Ground will be connected to the Ground pin and the output will be connected to the Arduino Pin 3 and of course Power will be connected to 5vdc on the arduino also. See picture. My resistor in this picture is a 10K0 and not the 4K7 shown above. Regards, Dave M.

Former Member · Answer

Hi Damian, I found a nice picture here: http://www.picymru.com/633 This is actually a tutorial for the Raspberry Pi but the hardware setup is exactly the same as for an Arduino... (The green wire goes to one of the input pin's of the Arduino.)

Former Member · Answer

The one resistor is a pull-up for the entire bus so no extra resistor is needed. Just put the second one on the same row as the previous one and you're good to go.