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Type: Posts; User: madgrizzle

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  1. Replies
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    I think if you duplicate what you did for the...

    I think if you duplicate what you did for the 3.5/3.6, you'll have a winner. More flash, please, and I really would love to see wifi, but I can adapt to it externally.
  2. The link didn't seem to work, but I did find it...

    The link didn't seem to work, but I did find it here:

    https://github.com/Jean-MarcHarvengt/MCUME
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    Check this out: ...

    Check this out:

    https://github.com/micropython/micropython/wiki/Board-Teensy-3.1-3.5-3.6
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    Thanks.. I thought that might be the case but...

    Thanks.. I thought that might be the case but wasn't sure.. You'll have to jumper to it however you want it set up, I assume, since they don't seem to be connected to anything.

    One thing I'm...
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    Stupid question..

    Sorry for asking a seemingly stupid question, but what's the purpose of the carrier rails?
  6. BLE is not ideal (I need to run a webserver) and...

    BLE is not ideal (I need to run a webserver) and was hoping to use the ESP32/whatever to do that and then just interface to the T4 through serial, etc.
  7. Is there anyone contemplating creating a breakout...

    Is there anyone contemplating creating a breakout board with WiFi? ESP32 or their newer chip.. whatever.. I have a project that could use the FPU power of the T4 but I have to have WiFi access to...
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    It has been ported to T3.x (as well as many other...

    It has been ported to T3.x (as well as many other microcontrollers), just not T4.0.. which isn't surprising since it was just released.
  9. If I could get it down to a two layer board, I...

    If I could get it down to a two layer board, I have would try to etch it or maybe milk it.. but I haven't figured out the routing to make it work and 4 layer solves that problem.. but I'm going to...
  10. Thanks for the info.. I had dug through mouser...

    Thanks for the info.. I had dug through mouser and digikey looking for such a beast before posting here and practically all are non-stock items.. to your point of being in the supply chain. I don't...
  11. Surface Mount Female Headers for Use with Teensy 3.5 w/ Pins on a PCB

    I'm trying to design a board (motor controller) around a Teensy 3.5 w/ Pins that I already have. I'm looking at using a service to build the prototype for me and I want to use female headers for...
  12. Thanks, it's for a variant of a CNC machine and I...

    Thanks, it's for a variant of a CNC machine and I want to replace the z-axis that currently uses a brushed DC motor with a stepper motor since they are more readily available as an assembly. I'm...
  13. Four DC Motors (with Encoders) and Stepper Motor Control on Single Teensy 3.5?

    I've got an application that needs to control four brushed DC motors with encoders and a single stepper motor and am wondering if this could be accomplished on a Teensy 3.5. I know I can do the four...
  14. Thanks for the quick response. I'm really new to...

    Thanks for the quick response. I'm really new to all of this and winging most of it. The timers are used for many functions (this is for a CNC machine firmware based on GRBL).. from the guy that...
  15. Question about Timers and Possible Teensy 4.0 Capabilities

    I'm working on a project that I'm adapting to run on a Teensy 3.5 and someone just released an entirely different version of code (based on something much better) but they did it based upon using an...
  16. >But earlier, you asked: That was my question...

    >But earlier, you asked:

    That was my question from when I hijacked the thread. Again, sorry for doing so..
  17. And sorry again for spamming, but I sort of...

    And sorry again for spamming, but I sort of solved my issue.. The solution was to unplug and replug the usb cable into the RPi. I don't know why that worked. It still seems to get some characters...
  18. I tried "cat /dev/ttyACM0" and I got the same...

    I tried "cat /dev/ttyACM0" and I got the same behavior as the arduino ide's serial monitor.

    I'd tried googling for raspberry pi usb serial buffer overflows, but to no avail. I'm really at a loss...
  19. I was using the latter (teensy) port, but...

    I was using the latter (teensy) port, but switching to the serial port made no difference.. same behavior. It's a very repeatable problem, and its not specific to the arduino ide's serial monitor...
  20. Not sure I have the same problem, but I also have...

    Not sure I have the same problem, but I also have an issue communicating between an RPi and a teensy 3.5 over usb. My teensy's application continually sends messages out using Serial.Print and...
  21. Thanks all, I just wanted to scratch that off the...

    Thanks all, I just wanted to scratch that off the list.. I think it's time to break out the oscilloscope.
  22. Thanks.. I'm seeing strange PWM behavior on pin...

    Thanks.. I'm seeing strange PWM behavior on pin 21 and was wondering if there could be an issue because I'm doing GPIO on pin 27 (they both happen to be capable as functioning as RX1, even though I...
  23. Newbie Question Regarding Pin Assignments

    When I look at the pin assignments for my Teensy 3.5, I see that many pins have multiple "alternate" functions, and some of them have the same alternate functions. Is it correct to say there is no...
  24. Thanks for the response... I'm going to fix the...

    Thanks for the response... I'm going to fix the excessively excessive EEPROM write issue (I calculated its about 4500 EEPROM writes occurring each time this part is run.. good thing I have a spare...
  25. Is there any relevance to using pins 22 and 23...

    Is there any relevance to using pins 22 and 23 (which are associated with FTM0) for generating the PWM signals? The encoder is using pins 18/19 if that matters.
  26. Teensy 3.5: EEPROM and Encoder/Interrupt Interactions?

    I'm working with a Teensy 3.5 and I have a program that I'm porting that does analogWrites to a motor thousand times a second, while reading the motor's encoder and saving it to EEPROM. I found that...
  27. Porting Ardunio-CNC Firmware to Teensy 3.5 - Advice on Pin Usage Requested

    I'm working on a project to port firmware for MaslowCNC (www.maslowcnc.com) designed for an arduino Mega to a Teensy 3.5. The reason is that I need to add more motors for a project I'm working on (5...
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    Thanks. The code I'm porting eventually...

    Thanks. The code I'm porting eventually "detaches" motors after 2 seconds of idle so the 1/256 pwm duty cycle isn't likely noticed, but I'll bring it up to the community to investigate since...
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    Thanks for the quick response! If I understand...

    Thanks for the quick response! If I understand correctly, when porting code from an arduino to a teensy, I need to change analogWrite(x,255) to analogWrite(0,256) to get the same effect.. correct?
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    Is analogWrite(x,256) valid?

    I'm working on learning so I apologize if this is a stupid question.

    The https://www.pjrc.com/teensy/td_pulse.html page says the following:

    "The value is between 0 to 256, where the higher the...
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