Modern Device Forum

We went over the library and revised it for Leonardo. Also due to work with Mega2560 chips shortly. Please download the latest version of the library from Github and you shouldn't have any trouble hooking it up.

Good luck and let us know if you have further problems,

Paul

grgtrpp,

Glad you got the board going, it's still being revised. The DIP switches are for future software development. In a performance environment you probably wouldn't want to flip through various sounds with blinking lights as feedback. They could be used for any kind of software development.

I ...

Don,

You've probably figured this out long ago. (Sorry about the really slow reply)
There are only three lines on the pressure sensor GND +V (5V) and the Vout line. The other pins are more for mechanical stability and all the pins are in parallel. If you use a meter on continuity you can confirm ...

djburke ,

The amp definitely needs a high-current ground connection, so I don't think the GBUF is going to work well. Ground on the amp needs to be your system ground.

I think the VS10XX chip schematics show a capacitive coupling of GBUF to the reference inputs of the amp. If you look at the amp ...

LVX

Here is how I did my regressions.
Put your data into excel. for example voltage vs wind speed

Subtract the zero wind value from the whole column.
Plot a scatterplot chart.
Add trendline and use the exponential function, check the show formula.
You now should have a pretty decent fit to the ...

John559,

Colder air is a complicated question. The temperature of the sensor is constant in the circuit. So colder air registers higher raw voltages (at still air), because it takes more energy to bring the sensor to temperature. When the sensor sees wind, there is less overhead before the output ...

LVX,

The sensor is designed to have the "prongs" cut off. Use tinsnips and carefully cut in between the two sets of three pin headers. Put the electronics in someplace dry and mount the prongs in the weather. Use silicon or some other sealant to cover the soldered leads and the cracks around the ...

mike2545,

Sorry for the really slow reply.

Try the character test button on the LCD117 and watch it scroll through the whole character set. If you don't see the symbol then maybe our docs are in error. It is possible that either they did not come from our LCD manufacturer or that our manufacture ...

RANJITHTAMIL,

There is a lot information in the Arudino playground under the capSense library.
You can also Google around and see how others have implemented cap sensing.
It's a very simple concept with a few pitfalls though, including the grounding issue.

My guess is that a car seat should be ...

Mikrotopia,

Sorry about the really slow reply.
You probably figured out by now that the modern device wind sensor is completely inadequate for sound sensing.
The thermal time constant (you may have to Google that) makes it way too slow to detect anything but perhaps 3-4 hz, so not much fun.

It is ...

dhrenewables,

I'm sorry about the really slow reply. I need to get a mod installed that will ping me when there are messages in moderation.

There are a lot of things that it might be.
Why don't you call the shop at 401 709-2424 in the early afternoon M,T,Th,F and I'll try to talk you through some ...

A MOSFET switching ground of the whole sensor would work.
Just don't read your output while the sensor is off.

Paul

fredriknyman,

It's just a general purpose op-amp - a lot of other rail-to-rail types will work.

Paul

Dalhimar,

Sorry for the slow reply I'll get around to getting my forum to notify me. There are few features on the forum that aren't built in and one is posts pending moderation.

The line

TempCtimes100 = (0.005 *((float)TMP_Therm_ADunits * (float)TMP_Therm_ADunits)) - (16.862 * (float)TMP_Therm ...

You can also use built in pin pullups on micrcrocontrollers that support pin pullups,
e.g. most modern microcontrollers

Paul

Dave,

I apologize for the really slow reply. Did you solder up the logic level selector? (Use 3.3V for the most universal choice).
You can also put the headers and shunt on it, but most people find the header sort of sticks up too much for their taste.

Uploading used to work fine at slower speeds ...

hopefully you'll get an answer from another user.
I don't have any depth in python/pi troubleshooting.

Paul

my need is to get a sensor that is accurate to wind speed from about 2 to 35 mph. I consider slight breezes to not really be wind, so the low-low end is not as important. over 35 mph and patio furniture starts to turn over.

I think the sensor as it is now with the RV ouput for signal and the TMP ...

You are correct that in the most standard schematic both sensors are part of the wheatstone bridge. The NTC thermistor though, has enough issues with non-linearity that we found locating a thermistor that even began to approximate the response in the bridge while being 50C cooler was a tough order ...

Musk,

You are correct that the current sensor is extremely sensitive to position. Also consider making the wire slightly diagonal (askew) if that optimizes setting. We have measured currents that small in shop (11 watt compact flour. bulbs) very repeatably. One thing you can do is to average ...