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cobolstinks

Member Since 22 Nov 2011
Offline Last Active Apr 13 2016 06:53 PM
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Topics I've Started

DS18B20 wiring help

20 December 2011 - 03:31 AM

Hi, I'm working on a simple project to report 4 temps, I'm having a lot of analog noise with my LM35 sensors and ordered some DS18B20 to give them a try. I plan on flashing my N+ per the instructions here: http://forums.netdui...-onewire-alpha/ But I don't understand the wiring. Does someone have a picture of how to wire one of these sensors? I've been looking at the tech spec here: http://www.google.co...pboyJ6sgpwv-0kA should it be something like N+ 5v -> DS18B20 Pin3 N+ grd -> DS18B20 Pin1 N+ digI/O pin0 -> 4.7kohm resistor -> DS18B20 pin2 ? does it matter which digital I/O pin i use on the N+? Thanks! Chris

wifly vs wireless bridge

04 December 2011 - 04:16 AM

Hello, I'm working on my first netduino project. I would like to wifi connect my N+. From a little investigation it looks like there are shields available for wifi, like the wifly. But since the N+ already has a NIC, wouldn't using a cheap bridge be more cost effective, assuming you don't mind the extra power requirement (which is fine in my case)? Thinking something like this http://www.amazon.co...ASIN=B004FMI3DA Anyone use a bridge with the N+? The endstate of my project is going to be a N+ that reads 5 LM35 temp sensors which will be in water proof probes inside of my home brewing rig. Than I plan on putting it on my lan and have it serve json to a simple page on a webserver and than use flot graphs to display the temps. Thanks!

Total Newbie Temperature Project

22 November 2011 - 03:25 PM

I know very little about electronics, but I'm a developer and have worked in C#, java, and unfortunately cobol. I'm also into homebrewing beer. So I'd like to take on a little project that would have 3 maybe 4 temperature senors which i would place in my kettles, and display their temperatures on a display. I would like to monitor temperatures from 0C - 100C, but the sparkfun breakout boards ive been looking at (http://www.sparkfun.com/products/9418) say they only go up to 85c. Does anyone have any recommendation on parts for this? Sorry that I'm a total newbie at this stuff, I have no doubts i can handle the programming side of things, I'm just not used to working in the physical realm :)

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