PaulS

"to tape his SD card", does that mean taping the card such that it stays put in the SD card socket or...? I can imagine that when people are carrying the Vectra sequencer around, the Teensy and/or SD card are prone to shock and vibration. The SD...

In message #6 you stated: That's a bit confusing. I assume that the 3V3 is shorted to GND? Paul

Could it be that your loop is too fast and overloads the external hub? Perhaps try to sprinkle some delays in the loop like this? void loop(void) { Serial.print("loop:");Serial.println(i); MIDI.read(); delay(1); usbMIDI.read()...

Probably it doesn't matter but there is a double declaration of usbMIDI.setHandleNoteOn() and usbMIDI.setHandleNoteOff(). usbMIDI.setHandleNoteOn(handleNoteOn); // Put only the name of the function usbMIDI.setHandleNoteOff(handleNoteOff)...

Please be aware that there are a lot of fake NRF24L01 modules out there. I have been troubled by cheap inferior modules so I ended up buying modules of the brand RobotDyn. Google for "NRF24L01 fake" and you won't be happy to read... Paul

Since the Teensy 4.1 USB port can comunicate at 480Mbps, I would go for the USB option. Search this forum for "USB transfer speed" and/or "USB data transfer" for more information. Paul

It should not pull in the SD library if those classes are never used. It's 40KB of wasted code space.

Here is the arduino-esp32 repository. You can file an issue here. And this is perhaps a usable library for OneWire on ESP32. Paul

Can you share the complete code that "stopped working"? Paul

This example perhaps? Paul

Not sure if it matters but I'm missing SPI.endTransaction(); while using SPI.beginTransaction(SPISettings(20000000, MSBFIRST, SPI_MODE3));. Paul

In case someone is looking for generating sin/cos lookup tables, here is a link to an online generator: Dr LUT. Paul

Most probably for replacement. Teensy 3.2 and Teensy 4.0 are not fully pin-compatible, e.g serial ports, CAN bus ports, etc. And don't forget the higher powerconsumption that comes with a Teensy 4.0. Besides that, a Teensy 4.0 puts out higher...

Agree. I would have pulled out the logic analyzer if I had the module laying around. Paul

Thought about again and I wonder if you are just not missing the highest bit (D11) due to improper timing. This piece of code from SPIencoder.cpp is possibly not correct: digitalWrite(_csPin, HIGH); digitalWrite(_clkPin, HIGH); delay(1)...

Could be a library issue. What if you change the line Serial.println(myAS5045.EncDeg()); to Serial.println(myAS5045.EncRaw());? You should see values between 0 and 4095 for a full rotation of the magnet. Paul

So the basic arrangement worked on USB, good. Did you try to power the basic arrangement also by an external 5V using a 7805? If so, did that work? If not, how did you connect the external 5V exactly? Paul

Just to be sure: are we talking about this module? Why not try to get the basic arrangement to work first as shown in the WIKI? (speakers connected directly to the module) And as @MarkT stated, how does your circuitry look exactly when powered by...

If you mean by "extended can frame" the extended frame format with 29 identifier bits, you can use the FlexCAN_T4 library. It also supports CANFD mode. Paul

Yes, something like this: link Paul

I think it's because of these lines: const int ledsPerStrip = 1200; // Maximum number of pixels per string int PixelCount = 4800; // Effective number of pixels 4800 LEDs divided by 1200 LEDs per strip is 4...

@KurtE and I have been at it again. This time creating a library that supports a number Arducam/Arduino camera modules: Model FrameSizes Pixel Formats Omnivision OV2640 FRAMESIZE_VGA //640x480 FRAMESIZE_QQVGA, // 160x120...

Thanks @mjs513, As you mentioned we are having some fun with several of these cameras. I see you showed my quick and dirty (v2) version of a shield for the Sparkfun Micrmod ATP board. Sure is a lot easier than having to deal with lots of...

Since a Teensy 4.x is so fast, I would add a delayMicroseconds(1); after the clockpin going low as well, like so: uint32_t SPIencoder::readRegister(void){ // Initiate variables uint8_t inputstream = 0; int outputVal = 0; uint8_t...

Looking at your code I noticed this line: servo1.attach(14, 500, 2400); Is there a reason why you deviate from the standard values of 1ms and 2 ms, like so? servo1.attach(14, 1000, 2000); Paul

More commonly known as XY-016 module. But still very limited in specs. Paul

Yes, I do mean the control signal pin. The specs of the Tower Pro MG90S do not mention a minimum voltage for the control signal amplitude. I also did not find any specifications of the WHS15024 boost/step-up converter. Do you happen to have specs...

Now I'm not familiar with the Tower Pro MG90s, but when you power them with 6Vdc, is the 3V3 output of the Teensy sufficient amplitude to reliably drive the PWM control signal? Paul

If I'm correct, the Serial Port Profile is not part of the BLE spec. See this answer. Found this too. Paul

Mouser even has 15K+ pieces on stock. I would buy Teensy 3.2 if they are available - I have actually never needed the processing power of the T4 [and the related power consumption]. Paul

Agree. Like his other post. Paul

@AndyA. The prev message (WillimamsimC) seems ChatGPT generated an should, MHO, be considered Spam

It's related to the SdFat library. Syscall::yield and SysCall::halt were apparently removed in V2.1.1 of the library. Paul

Thanks a lot! Wish I would have known this feature long time ago... Paul

A 1920x1200 PNG file can be uploaded without problem. So perhaps shrink your photo? Paul

Reviewing the board files and the schematic, I think the power supply to the Teensy is fundamentally not correct. In the schematic, the Vin pin is labeled "+3.3V". That 3V3 comes from a regulator mounted on JP13. 3V3 is too low to power the...

In Eagle, you can [1] "Print to File (PDF)" which looks very readable, or [2] File > Export > Image. Choose resolution '300dpi' and it will output a very readable PNG image. Your design seems to be done in Eagle 9.7 which I can not open in...

OK, took me a while to figure out you meant BOB-10124... This board. It is indeed not really clear from the schematic and silkscreen on the PCB but the RTS signal should be connected to pin 4 of J9: The LED will be ON when transmitting and OFF...

Had a look at your code but nothing obviously wrong stood out. What if you integrate only 2 sensors at a time [BME680 & MQ135 or BME680 & GPS or MQ135 & GPS]? Any combination that works? I guess it is a matter of commenting out parts of your...

Welcome to the forum. You may want to share more and higher resolution pictures. I tried to see where the wires go from the display to the Teensy, but it's not discernible. Please share a schematic and your simplest code that shows the issue...

I think it changed here. I assume it was for a good reason then - hope it's not going to bite us somewhere else now. Anyway, thanks very much to @PaulStoffregen and @jmarsh after indepth sleuthing! Paul

Could it be a timing issue with the one-wire interface? Teensy 4.x is pretty fast so perhaps some timing could get on the edge. Heating and/or cooling the IMXRT1062 chip carefully might reveal something. Paul

I had a quick look, I think I know what the cause is but I'm not sure of a few details. If you look at the memory allocated immediately before the ClocklessController there should a 4-byte guard variable. Guards are generally used for local...

Yes, sounds good to me. I'm running it now and FastLED seems to be working. Committed the fix just now! https://github.com/PaulStoffregen/cores/commit/638a2079d290e3d6683aeceb07b6dfd8b09151a9

Did you measure that 2.5V on the Teensy VIN pin? Is the Teensy powered over USB? Paul

I suppose you are trying to read out these registers? Not sure whether I can be of any help here. I think you just have to fiddle with the settings until you read something that looks valid. Paul

This is a bare PT100 “Resistance Temperature Detector”. It's basically a resistor so it does not output a current. You can not hook up such a resistor to a 4-20mA current loop. Whatever circuit you will be using to measure the resistance [and...

Do you have a datasheet or part# for that transmitter? Paul

It may well be a worn-out or low quality breadboard. Breadboards vary a lot in quality. A lot of chinese breadboards are very cheap but low quality - you get what you pay for! Two brands stand out: 1. BPS [BusBoard Prototype Systems]. I have...

Did you check the sub-settings as well? See the manual, paragraph 5.7.4 Analog Output (AO) and 5.7.4.1 AO Detail Settings. OK, but what voltage did you actually measure then? You said "it doesn't match the intended 2V" so I'm curious what...