Search results

I have a similar problem. I'm trying to detect the note vocalized, but it needs a higher resolution (~5Hz) in a relatively small range of 82Hz to 1318Hz. I'm contemplating trying to lower the sampling rate from 44.1khz to 8kHz or 4kHz. It already works reasonably well with 44,1kHz with the...

I'm working with my son on seeing if it's possible to get a joystick/controller connected to a teensy4.0 and then see if we can use those values to output MIDI messages. Would also like to use with the teensy audio module. I haven't worked with USBHost before, but I'm thinking that's what would...

Thanks! Will try and take a look soon.

I have this exact same issue. I'm waiting on a character reading from Serial to continue. It works in Serial Monitor by sending the relevant char, but it doesn't work in Serial Plotter. Both are set to "Both NL & CR", and I tried various termination settings. I hit 'Send', or if I tap 'Enter' it...

Yep, it works! Glad to not have to worry about the impact on power draw for the ADC inputs.

And this worked with 12V supplied to the VMOT pin, and 3.3V supplied from the teensy for the other power supply. I wasn't sure whether I should take the 5V from the teensy or the 3.3V from the teensy. If I can take the 5V, and still drive the step/dir pins, that would probably be preferred since...

Thanks again. Just thought I'd leave a note on the thread that this worked, in case it helps anyone else.

Is that 150mA a requirement from the 3.3V teensy, or the 12V power supply?

The one with the document I listed is 3809Z-14. The exact model I have has this info on it: 3809Z-45 0.15A 072007 36mm diameter and 12mm height.

I tried turning them but it didn't feel very different, but this stepper motor is connected to an apparatus where it's awkward to turn the motor and feel how much effort it takes. I checked and the green/black is 55 ohms, and so is blue/red, so I think those are the 2 coils and I should be able...

This diagram seems like it might be helpful, although I'm not sure how to match up the stepper motor pins.

I have this stepper motor Lin engineering 3809Z-45, which is rather similar to this one: https://lin-web.s3.amazonaws.com/downloads/products/hybrid-stepper-motors/3809/WO-3809Z-14/WO-3809Z-14%20Datasheet.pdf stepper motor: Red(A+ Phase) Blue (A- Phase) Green (B+ Phase) Black (B- Phase) -- I'm...

Wow, you've put a lot of work into this! I'm interested in building a MIDI control surface for ardour. Any suggestions on which method to interface with ardour? https://manual.ardour.org/using-control-surfaces/

Keeping audio/video/midi streams in sync works really well with JACK which is open source and works in linux/windows/MacOS. This is used to keep multiple software in sync within the same OS, and also over the network. I use this to sync video and audio across different applications. It's...

nevermind. got it. The adafruit seems to be setup by default with the secondary address: 0x77 So changed it here: iaqSensor.begin(BME680_I2C_ADDR_SECONDARY, Wire); And it works!

I plugged in the adafruit bme680 board today, and the bsec library sketch is not finding it. FYI, I also had to add in "while (!Serial)": while (!Serial) Serial.begin(115200); The adafruit library did find it and returned values: adafruit bme680 i2cdemo Loop Temp°C Humid% Press hPa Alt m...

I can confirm this compiles with the changes. Markus_L811's method worked well above: https://forum.pjrc.com/threads/61374-Using-the-BME680-with-IAQ-with-the-Teensy-3-1-3-2?p=256342&viewfull=1#post256342 This also worked with the slightly newer library and arduino 1.8.15 with teensyduino. Much...

Just wanted to provide an update. I had a 3.6 beta board, but not a 4.x board to test. So far I've only tried the bmp390 board on a LC, but the boards I ordered work well: http://www.diymalls.com/MP390-Barometric-Pressure-Altimeter-Sensor?tag=Temperature%20Sensor I'd probably get the Adafruit...

I ordered some boards of the one I posted earlier. I'll report back if they work on a teensy 4.1.

From your debug, it looks like it's receiving the temperature and pressure calibrations (T1, P1, etc). I've used the BMP280 and BME280 with the teensy, and am about to find a BMP390 to try. I'm wondering if it's the 24-bit sample and possibly being stored in a default # of integer bytes or...

Ran into similar problem again, and thought I'd leave a reference here in case this is helpful for someone searching about how to capture serial data in linux. This works really well: https://github.com/tbird20d/grabserial You can likely install it like this: sudo apt install grabserial Also...

Cool seeing it with the lights on the megaphone, nice touch. When I did the dalek voice coder, I kinda liked the triangle waveform sine1.begin(WAVEFORM_TRIANGLE);

Glad you are making progress. How does the audio sound in audacity? After converted? You can silence or fade the end of the sample in audacity. Pick a zero-crossing to start and end anything you silence/fade. Maybe frequency filters would help. Maybe you could do a mic recording of the audio...

Is it running on battery power only? If not, could help. Could be the microSD card. It's a big power draw and can induce noise in my experience, although I've only worked with writing to microSD card (reading I would expect to be less prone to noise). Maybe running the sdcard off a different...

Not sure if it's your problem, but I'm fairly sure it should be "\" in windows and not "/" for path separator. If you do it that way I'm not sure if you have to escape the special character C:\try\help.mp4 or maybe this: C:\\try\\help.mp4 Also good to use File.separator for cross-platform...

That's a great idea!

Ok, just wired up a 2k ohm resistor to 3.3V on SCL and SDA pins. You need a 2k resistor for the SCL pin to 3.3V, and you need another 2k resistor for the SDA pin to 3.3V. Then it came up, and this with a T-LC. I just used the 3.3V pin on T-LC to power the MPU6050 board. No 5V needed. BTW, the...

Well, I must've forgotten how I wired it. It definitely doesn't work as-is. For testing, look under i2c_t3 menu for the "basic_scanner" sketch. It checks all i2c addresses for an acknowledgement. It didn't find anything with the mpu6050 board hooked up. I plugged in another i2c board and it...

Did you setup i2c_t3 with the I2C_PULLUP_EXT in the begin function? I'll try and post a simple sketch later. I might have done more of my testing on 3.2, but I'll try it on LC. I doubt there is anything wrong with the breakout board or the LC. Also, I've bought some cheap breadboards that...

I've likely used that same MPU6050 breakout board. I got 10 of them off of ebay once. https://www.ebay.com/itm/MPU-6050-6DOF-3-Axis-Gyroscope-Accelerometer-Module-for-Arduino-DIY/201415045005?hash=item2ee545af8d:g:OSwAAOSwDwtUm4WP I had no problems running it off of 3.3V, although it may have...

That's awesome! Nicely done. That looks really nice from an 8x8 grid. I wonder if there is a clever way to create a heat map of an area by repeatedly panning over a certain area. Basically, use the motion to gather info on the gaps. Also would be kinda cool to do some stitching so you could...

I thought some people on here might be interested to know that TechShop closed their doors this last wednesday. Disappointing. :( https://makezine.com/2017/11/15/techshop-closes-doors-files-bankruptcy/

I think that basic functionality as described would be very valuable. In the long run, I think it would be worthwhile to have it use the same method as the audio library. Would it make sense to require the audio library, or to separate out a DMA queue library that the audio library and the ADC...

What I'd like to see is extending the Audio Library to fill queues with other ADC pins. This doesn't quite make sense to pass a bunch of pins with a constructor but you get the idea. This would tell ADC to sample from 5 different pins at the <sampleRate>/1000. When those queues fill up they...

In audacity, you have to import as raw audio. You can then export it as wav file. On the post about neutronned's mic, you'll find more code.

Not sure about the bins, but your results might improve if you can standardize the hammer hit with an apparatus. Also something like a boundary microphone might be helpful: https://en.wikipedia.org/wiki/Boundary_microphone

This really seems like it's much easier now. With the new teensyduino, I'll have to give this a go. Especially since I switched to the new version of sublime and it's really sluggish on linux.

In case it wasn't clear, that last link I gave was to an automatic timer for an electrical outlet. I plug the charger into that and set it to turn off the electrical outlet after 1,2,4,or 8 hours. You can also have it stay on, so you can leave it plugged in as a normal outlet.

Wow, adafruit has been busy. I see they have mynewtOS on the nrf52 feather. Any experience with that? I think if you could be less than $50 that would be good.

Same size as AA. BTW, you can use dummy versions (or just add wire in unused AA slots that are wired in series) to use these to replace AA batteries, and get much greater battery life. In other words, You could replace 3 AA batteries with one of these. One other thing, as you know be careful...

Yeah, I think the pricing is in your favor as this is clearly not a teensy replacement. It's a specialized version. Are you buying the bootloaders from Paul? If you are, likelier to be OK. I also own an nrf52 Developer's Kit. Without one of those, or some intimate knowledge of how to program...

I use the 14500 batteries. These are 2000mAh: https://www.amazon.com/gp/product/B00PIDNTRA/ I also have them in 1000mAh, but can't find the link right now.

Just to be clear, this is essentially a teensy with an ntf52 on board that communicates with the teensy over serial? I'm assuming that's why there's 2 micro-USB connectors (one for teensy portion, one for nrf52) Or is this meant to be connected to a teensy? Either way, I'd be interested in them.

I think you can power it from the 3.3V pin on the teensy. If that doesn't work, you could use the 5V, but I would wait until someone else chimes in as I'm not positive. Also, I think the "INT" or "ADO" pin (forget which) can be held high or low to change the address. Check the sketch for the...

Ahhh, I was thinking he already had an input, but I guess it was just outputting a sine wave so it wasn't. Thanks.

Yeah, I did, didn't see anything about AudioOutputI2S.

I think he was wondering about why you need to declare this: AudioOutputI2S out1 I've been confused by this as well. I'm not sure he does need that declaration.

Do the sensors stop working completely, or just the humidity sensing? Does temperature and pressure sensing continue to work? Am interested in what you eventually find is the problem. I haven't encountered any problems but I don't run them continuously.

I'm using an electret mic, but the gain is fine w/headphones or line out. It was just the output over USB. I'm not sure why cause I had it working in another sketch at nice levels. I'll try and make sure my other sketch is working fine too, but I didn't really need it, was just wanting to do a...

I tried recording it to USB but the gain was really low. Not sure why. I mainly came here to say that I found this site: http://webaudio.prototyping.bbc.co.uk/ring-modulator/