Modern Device Forum

ulrich223, Unfortunately we have seen this before. This is a result of component tolerances that are too close to an edge case where the sensor doesn't function. We are in the process of addressing this but in the meantime, email the shop and we'll replace your sensor. What happens is that in some t...

I would recommend people therefore to reconnect pin 4 of the Opamp (its Vcc) to the 9V bus,

I believed that is was connected after the regulator - I'll check on this.

Can the supply voltage properties be checked and updated? There is a linear regulator after the input. So a higher input voltage won't achieve what you want. There is a voltage divider that could be changed to allow a higher working voltage. We could do this on request for an order of a few pieces....

Theo_NL, You appear to be correct, checking the schematic that the board should handle 15 volts without an issue. Everything else is running off the regulator output. One possible issue is that the regulator will be generating more heat, since it's just a linear regulator. It's far enough away from ...

Henk, You have two options. As stated above you could coat the board with something. We've had good luck with epoxy, just flowing it onto the board, over the components. (but not the thermistors). If you are going to coat the sensors, use something thinner like spray coat of clear polyurethane or si...

The fluxamasnth library has moved to Moved to https://github.com/fluxly/Fluxamasynth

It has some new functionality as well as programming to support new shields that in production currently.

bitbang3r, Since I can easily mount a ds18b20 sensor within an inch or two of the r3 wind sensor, would I get more accurate windspeed measurements if I modified the code to just ignore the windspeed sensor's onboard thermistor output & base the temperature portion of the windspeed calculations on th...

mstrange Here is one formula you can try WS_MPH = (((Volts – ZeroWind_V) / (3.038517 * (Temp_C ^ 0.115157 ))) / 0.087288 ) ^ 3.009364 you will need to use the pow() function for the exponentials here is the link with some more tips https://moderndevice.com/news/calibrating-rev-p-wind-sensor-new-regr...

ajd888,

Do you have the grounds from the power supply and the Arduino connected together?

The A1324 will work and is dead easy to hook up.
After confirming the pinout (do this twice as I think the datasheet shows the part from the bottom view - always a bad idea IMO), hook up power and ground and run the output into an ADC (analog) pin.

Paul

I'm not sure why it has Arduino crossed out - I'll investigate when I get time. The sensor works best at 5 volts, but will work down to 3.3 volts with reduced accuracy.

All and all a fabulous linear output hall-effect sensor.

Paul

When I moved to an alternate power supply instead of using the Arduino built in power supply I hooked up the neg alternate power suppy source to the Gnd and the pos to the V on the sensor. The other sensor pins went to the Arduino. But I didn't connect the Arduino Gnd to the sensor Gnd. Once I conn...

Dan I am using a Wind Sensor Rev.P with an Arduino MEGA 2560 R3. I am powering the sensor from 12.4V. I have noticed with the sensor sitting on my desk in a breadboard, oriented vertically, I regularly see speeds around 1.22 mph without any fans operating. With an 80mm DC fan operating, I see around...

Henk, You should obviously cover the electronics package with something waterproof. My guess is that the sensing elements may not last too long though, out in the weather. Water plus electricity equals electrolytic reactions and corrosion. You could try spraying the sensing elements with some kind o...

Which sensor Rev P or Rev C? I suggest a regulated 5 volt (preferred) or 6 volt supply. If the output isn't stable with a regulated 5 volt supply, then the sensor is defective and needs to be replaced. You can use a battery but the current draw ~30 mA is substantial and will kill a battery in known ...

The sensor is designed to maintain hot sensor at about 75C above the ambient sensor. In order for it to work, the circuit must have the voltage and current to heat up the sensor to balance the bridge. Current draw will range from 35 mA perhaps up to 120 mA or more in very windy conditions. One issue...

Just add a switch somewhere on the piece and run wires back to where the missing reset switch is. If that's not the answer you were looking for, then you need to put a little more detail in your question please.

Tazling, There is a schematic of the board on Github - but you could be forgiven if you are confused by it - EagleCad schematics are often somewhat confusing as to the headers. a) is the BBleo supposed to power the bboard rail, or be powered by it? Power it - for use in sensors b) if the rail is liv...

We don't sell it, please try digikey or mouser.

Paul

That seems to be a telescope driver? You want to make sounds for telescope interface?
You'll need to be able send MIDI info which just involves serial information at the correct baud rate. The rest is picking the characters.