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  1. Yeah, I completely blanked on the need for a...

    Yeah, I completely blanked on the need for a current limiting resistor. I'll add a 370 ohm resistor (If = 10 mA, Vf=1.3V).



    The solenoid I'm using is rated as using 1.15 W at 24V, which works...
  2. Just a quick clarification - the Teensy is on USB...

    Just a quick clarification - the Teensy is on USB power, and there is also a 12V power supply in the circuit, but none of the 12V signals go to the Teensy (although they have a common ground).
  3. Teensy 3.6 LED dims with solenoid operation

    I have a Teensy 3.6 plugged into a custom PCB. One of the functions of the Teensy is to drive a relay to control a solenoid valve. The solenoid is powered from a 24V supply with an isolated ground...
  4. Unfortunately, the situation is about the same;...

    Unfortunately, the situation is about the same; between the six Teensy units, the disconnect happens at least once per day.

    Quick Recap: I have six Teensys connected via USB to a PC running...
  5. Teensys Intermittently Stop Responding?

    I have a project that involves multiple (6) Teensys with audio boards connected via USB to a single computer running Ubuntu. Each Teensy is individually controlled by a Python process, and is set up...
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    So I received the hub today. I'm not actually...

    So I received the hub today. I'm not actually sure what to make of the lsusb output, but it doesn't immediately read as a single TT device, which is hopeful. The value for bDeviceProtocol is actually...
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    Hi Paul, At this point three are plugged...

    Hi Paul,
    At this point three are plugged directly into the computer, and three are plugged into the hub, and it's the ones on the hub that are acting up.
    It looks like the hub is in fact a single...
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    Multiple Teensys, Distorted Audio

    Hi all,
    I have a project that involves multiple (6, at the moment) Teensys with audio boards connected via USB to a single computer. Each Teensy is individually controlled by a python process, and...
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    So after some experimentation and reading, it...

    So after some experimentation and reading, it appears that it's not easily possible to rename the devices dynamically (https://forum.pjrc.com/threads/32534-Adjusting-the-Teensy-MIDI-device-name). The...
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    Based on my understanding, the new device name...

    Based on my understanding, the new device name has to be explicitly defined at compiling (since it uses #define)? Does the USB code require it to be declared that way, or can it somehow be declared...
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    Multiple USB Audio/Serial Naming

    I'm building a device that will play audio and simultaneously control some LEDs and read switches. Several of these will be running simultaneously, controlled by a central (Windows) PC, each with its...
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    Menu System Advice

    I'm trying to implement a very basic menu system in my project. I'm using the PJRC ILI9341, Teensy 3.1, audio board, and 4 membrane buttons for inputs.

    Two 'layouts' will have options to select,...
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    Okay, so maybe I misunderstood the CPU speed...

    Okay, so maybe I misunderstood the CPU speed settings. I thought I'd read somewhere that 16 MHz was the fastest without overclocking, so I set the speed to that, ignoring the words "No USB"....
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    Windows 7 Driver Issues

    I just got two Teensies (3.1), and my computer has trouble recognizing one of them (Teensy A). I've soldered pin headers and a crystal for the RTC. When I connect it via USB, there's no sound that...
  15. So a quick update: I got my new Teensys...

    So a quick update: I got my new Teensys (Teensies?), and hooked one up to a breadboard with the 7805 and a battery power supply (4 AAs) - success. Switched to the Traco regulator - success. I then...
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    Apologies in advance if this is convoluted or...

    Apologies in advance if this is convoluted or confusing.

    So the vector solution has a two-fold reason (which I now realize I should have mentioned earlier). In addition to writing the data all at...
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    Writing Vector to File on Teensy

    I'm making a datalogging program using Teensy 3.1 and an I2C sensor, with the SD card reader on the ILI9341.
    I'm using vectors to store the data, since the logging duration is variable. The...
  18. So I removed the Traco and tried using a 7805 on...

    So I removed the Traco and tried using a 7805 on the same board, and it looked like the same result. I then tried a different power source, and now the Teensy won't light up at all, so I'm assuming...
  19. Sanity Check / Power Source Troubleshooting

    I've made some progress on my board, and have a prototype fabricated and soldered.
    However, I'm having trouble actually using it.

    I designed it based on this board, but modified to work with the...
  20. Project Advice: Teensy 3.1, Audio, ILI9341

    EDIT: I just realized I posted this to the wrong board. If it could be moved to Project Guidance I'd appreciate it; otherwise this thread can be deleted and I can recreate it over there.


    I'm...
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