Search found 656 matches

by paul
Wed Jul 29, 2020 10:28 am
Forum: Sensors
Topic: Wind Sensor As Hot Wire Microphone
Replies: 6
Views: 6091

Re: Wind Sensor As Hot Wire Microphone

Foxbat I've got some 40 gauge from here https://store.coilsociety.com/nifethal-70/40-awg-nifethal-70/500-ft-40-awg-nifethal-70 Seems like a low cost option if it works. If you send me your address a support@ md I'll send you 10 feet of mine or however much you want in an envelope. That according to ...
by paul
Sun Jul 26, 2020 1:21 pm
Forum: Hardware
Topic: A hiss on the Reverbalizer ?
Replies: 8
Views: 1881

Re: A hiss on the Reverbalizer ?

Foxbat_25BM,

You might look at your power supply, and see how clean that is.
You might also read about ground loops.
by paul
Sat Jul 25, 2020 3:50 pm
Forum: Sensors
Topic: Wind Sensor As Hot Wire Microphone
Replies: 6
Views: 6091

Re: Wind Sensor As Hot Wire Microphone

(2) Within the balance bridge, which resistor needs matching? In the schematic posted online, I assume it is R3 (2.21 Ohms) The pot trims the 10K reference side of the circuit. I think we'll keep the schematics a step behind actual production. I'm well aware that our products can be produced more c...
by paul
Tue Jul 07, 2020 5:41 pm
Forum: Sensors
Topic: placement of md0550 and stevenson screen
Replies: 10
Views: 528

Re: placement of md0550 and stevenson screen

Roy,

Yes - maybe email support at moderndevice.com and I'll answer some of the technical questions about where we're at with testing and new regressions. As you mention the listed code is old.

Paul Badger
by paul
Mon Jul 06, 2020 9:28 am
Forum: Sensors
Topic: placement of md0550 and stevenson screen
Replies: 10
Views: 528

Re: placement of md0550 and stevenson screen

Roy,

The bridge is R3/R4 R5/R6
As the sensor heats up the bridge is balanced.

Paul
by paul
Sat Jul 04, 2020 3:30 pm
Forum: Sensors
Topic: placement of md0550 and stevenson screen
Replies: 10
Views: 528

Re: placement of md0550 and stevenson screen

and how did you arrive at the equation Vraw = V0 + b * WindSpeed ^ c. I know in your blog you derived this from an formula done by university of E2 – A2 = B U0.5. can i have the name or reference to the university white paper that you read about. Caimbridge University in UK has lots of great inform...
by paul
Sat Jul 04, 2020 3:25 pm
Forum: Sensors
Topic: placement of md0550 and stevenson screen
Replies: 10
Views: 528

Re: placement of md0550 and stevenson screen

rynait r5 & r6 are setting a reference voltage to be compared the active arm of the circuit. When the voltage changes the heated sensor changes resistance, balancing the circuit. So voltage is proportional to the square of wind speed, approximately. R5 representing a small value in proportion to oth...
by paul
Thu Jul 02, 2020 4:57 pm
Forum: Sensors
Topic: placement of md0550 and stevenson screen
Replies: 10
Views: 528

Re: placement of md0550 and stevenson screen

rynait, I don't have any special knowledge about this. But some facts about the sensor that may or may not be useful.  • The sensor is pretty easy to spit the sensing head off from the electronics just cut it with tin snips between the headers and then join back together with three wires. Distances ...
by paul
Fri May 22, 2020 9:26 am
Forum: Sensors
Topic: Temperature Measurement with the Sensor Rev. P
Replies: 3
Views: 499

Re: Temperature Measurement with the Sensor Rev. P

abian_B

Glad you got it working. About +- 1.5 degree variation max, is what I see in the shop too, when testing the sensors.

pb
by paul
Wed May 20, 2020 11:20 pm
Forum: Hardware
Topic: Fluxamasynth v3.0 Arduino & MIDI simultaneous
Replies: 2
Views: 396

Re: Fluxamasynth v3.0 Arduino & MIDI simultaneous

quarterturn, The easiest way to do this is with a serial port that is not attached to the USB such as Serial1 on a Mega. Here's a brief sketch of what I think is the easiest way. • Make sure the Fluxamasynth solder jumper is set to the left hand pad to the middle - right hand pad is bare (not connec...
by paul
Mon May 18, 2020 10:10 am
Forum: Sensors
Topic: Temperature Measurement with the Sensor Rev. P
Replies: 3
Views: 499

Re: Temperature Measurement with the Sensor Rev. P

The temp sensor is MCP9701A. Its output is not scaled at all. Tambient = ( Vout*(5/1024) – 0.400 ) / 0.0195 should be correct if Vout is the read from the analog pin ADC on a 5 volt arduino. Recheck pin connections? Test your arduino ADC with a simple voltage divider to see if reads ~512 I'm baffled...
by paul
Thu Feb 20, 2020 10:11 pm
Forum: Sensors
Topic: Wind Sensor Rev P Schematic Inconsistent
Replies: 1
Views: 1612

Re: Wind Sensor Rev P Schematic Inconsistent

bschulz1701, I don't think we're going to update that schematic. We have been rethinking whether we even want the wind sensors to be open source at all, since they're unique products and we have spent a lot of time figuring out the circuits and getting them calibrated in their current state. We cont...
by paul
Tue Jan 28, 2020 1:10 pm
Forum: Software
Topic: Use LoP-Parameters with PureData
Replies: 4
Views: 8003

Re: Use LoP-Parameters with PureData

Jeff Avery,

Thank you for your code snippet. I'm glad you got it working.

Paul Badger
by paul
Tue Jan 07, 2020 11:06 pm
Forum: Hardware
Topic: A hiss on the Reverbalizer ?
Replies: 8
Views: 1881

Re: A hiss on the Reverbalizer ?

nicotep, I'm glad you got it going, but it is always a bit unsatisfying when things start working without a purposeful change. Did you change power sources? It's always worthwhile powering audio projects on batteries and linear regulators as an experiment to rule out power supply noise if it might b...
by paul
Sun Dec 15, 2019 3:02 pm
Forum: Hardware
Topic: Anyone got the MIDI input working on the Fluxamasynthshiel V.3?
Replies: 3
Views: 2735

Re: Anyone got the MIDI input working on the Fluxamasynthshiel V.3?

Codeman,

Apologies for my slow response to the forum.
Was your board ordered with the MIDI options? When set to the midi jack we set the jumpers to the middle and right jumper (with the MIDI jack on the right).

I'll update this with the picture of the jumpers when set to midi jack input.
by paul
Sun Dec 15, 2019 2:39 pm
Forum: Sensors
Topic: MD0550 and 12 Bit ADC
Replies: 1
Views: 1391

Re: MD0550 and 12 Bit ADC

admiralmaggie, I apologize for the long delay on getting to the forum. Yes that code for Rev C is suboptimal and has some of ADC resolution rolled into the math. We just revised the Rev C and are going to revise it a couple of more times in in the two months or so to put in some temperature compensa...
by paul
Sun Dec 15, 2019 2:35 pm
Forum: Software
Topic: Fluxamasynth and Pro Micro, Adafruit Itsy, etc.
Replies: 1
Views: 918

Re: Fluxamasynth and Pro Micro, Adafruit Itsy, etc.

dfdtitmouse, Apologies for the long delay getting to the forum. It seems like you made work in the intended way with a few boards. The 32U4 shouldn't be that different except for the USB connection - which resets on every upload. Are you just trying to pass midi/serial through and have that work? Or...
by paul
Tue Nov 05, 2019 12:50 am
Forum: Hardware
Topic: A hiss on the Reverbalizer ?
Replies: 8
Views: 1881

Re: A hiss on the Reverbalizer ?

Hmm, This is the first I've heard of excess hiss. The little I've played with the board it sounded very clean. About the best I could do would be to send you a new board to compare, but we would need to solder headers on so I could get the board back if it performs the same way. Let me do a little r...
by paul
Wed Oct 02, 2019 12:10 am
Forum: Sensors
Topic: Wind Sensor Rev. C temp readout and high zeroWindAdjustment
Replies: 1
Views: 1443

Re: Wind Sensor Rev. C temp readout and high zeroWindAdjustment

Alluminator,

Yes negative values for zero wind are fine.

As far as the temperature goes, it will only be accurate with a 5 volt regulated supply.
I hope we can revise that code soon also because it seems like it may be a problem as well.

Paul Badger
by paul
Mon Jul 15, 2019 9:13 pm
Forum: Hardware
Topic: Fluxamasynth-32 with SD Card
Replies: 4
Views: 1712

Re: Fluxamasynth-32 with SD Card

The SDA and SCL pins are a bit of problem. Shawn Wallace (the designer of the current version of the board) informed me that he had used an out of date doc on the ESP WROOM which had either SDA or SCL mislabelled. So this one will require adding a wire from the ESP module. Of course (to push our own...