David Zebrovski

nice nice nice!,

I really liked this project. People like you drive the hive mind ^_^). Keep up the good work.Its so nice to see people doing serious fundametal prototyping and not plugging modules like monkeys. Hehe

Initially thissetup was designed for ambient temperatures, maxing to 100K. In case of higher temperaturemeasurements are of interest, I will just use J-K type or Chromel-Alumel typethermocouples which will work up to temperatures ranging 1000-1500°C if Iremember correctly.

Sensors and other similar devices canpresent poor and/or less accurate results in real life. That can be related toseveral factors: how they are being installed, are the manufacturer providedconditions taken into consideration when applying them, and calibration. Let’s considerthat first two factors are correct. So the calibration then becomes anessential parameter for accuracy here. Proper “calibration” can correct the uncertaintiesin measurements and has to be done for any kind of sensor as a rule of at thumb.

Hi Jerry,and thanks for the comments. It looks like my spellchecker (integrated inMozilla) did not work properly. I'll editequations so that it looks more readable.

-55°C +150°C for the NTCs.

Normally in cosumer market high precision is not important, I agree. Unless you are working in labs. or similar where small drifts should be avoided at any costs. I made this device for sake of testing firmware and for testing platform. It will be useful for many areas and one can adjust the precision easily. In case less precision is needed it can ba easily decreased. In my opinion though this is another method in contrast with many existing, so its always good to have options to choose.

Hello Peter, I will make the schematics soon and will add to this project.

method used here will boost your measurement range up to several hundred kelvins, without need to change anything in setup. The NTC probes here are very "simple" and would survive harder days easily. This is not the case for Arduino ready plugin modules. Also it is more precise and less error prone, to this its construction small temperature fluctuations and noise is being filtered out, basically you are measuring the temperature in "bulk". Its ideal to use in place where temperature in volume is needed. Meanwhile the plug-in sensors for Arduino ecosystem are already hard-soldered and their libraries are written, so there is not much room for flexibility. But of course its a generalized answer. I could tell you more detailed, if you let me know the exact sensor you a...

method used here will boost your measurement range up to several hundred kelvins, without need to change anything in setup. The NTC probes here are very "simple" and would survive harder days easily. This is not the case for Arduino ready plugin modules. Also it is more precise and less error prone, to this its construction small temperature fluctuations and noise is being filtered out, basically you are measuring the temperature in "bulk". Its ideal to use in place where temperature in volume is needed. Meanwhile the plug-in sensors for Arduino ecosystem are already hard-soldered and their libraries are written, so there is not much room for flexibility. But of course its a generalized answer. I could tell you more detailed, if you let me know the exact sensor you are considering.

0.01 Kelvin, easily achivable

if you mean PWM range?, then the answer is it has 3 on-Board Timers, (2 x 8 Bit and 1 x 16 Bit). The 8 bit timers resolution is 256 steps also for PWM and for 16 bit Timer its 65535 steps.

nice ^_^) now we can eat peanut butter as candy. I find the idea quite innovative. Even gonna try to make it as you did hehe

can't agree more.

well, it does for now, after several months of suffering ^^).