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You can use old stepper motor from old printer or floppy disk drive head track position and cordless drill:D
Only use the two wires out of the four on stepper motor.

A variable reluctance sensor (commonly called a VR sensor) is a transducer that measures changes in magnetic reluctance.

Interface circuits
VR sensors need waveform shaping for their output to be...

I am not sure how to do it either but maybe I can steer you in the right direction at least.

Teensy 4.1 PIN #10 GPIO_B0_00 see schematic.
The issue is I cannot pass argument(!) to IOMUXC_PAD_SRE...

I actually think you are missing one important piece of code for accessing RTC in the Teensy microcontroller in void setthetime(void).

void setthetime(void)
{
int Year = gps.date.year();
...

Hello World or shall I say hi all.. ;)
Post#1078
I personally would vote for (d) xd:rolleyes:
@KurtE all my ILI9341 TFT projects are based on your library, no screen flickering with the buffer I...

Well thank you guys for the confirmation and thanks for the hell of a job you guys are doing here ;).
I am using this for easy file transfer between PC and my own build ATARI hard drive emulation...

Hi all been awhile.
Just updated to the newest Arduino-1.8.18 and TD1.56#B4.

I'm running into a weird MTP issue seems to be smaller size file related less than 512 bytes :confused: ( 371 bytes )...

Hi
You can find more information in this link: PWM Resolution (Teensy LC, 3.0 - 3.6, 4.0, 4.1).

Holy cow this is interesting I wish I had less projects :D
I need 120ns or faster for my vintage Atari ST/e. :cool:

I think you are confused how this Tme Library works. See Time Library: https://www.pjrc.com/teensy/td_libs_Time.html
It's just basically software clock implementation with easy to use commands,...

Here is nice Transactional SPI configuration example right in the middle of the page.:)

Oh this is looking good :rolleyes:
I am wondering if I can use this to spy on my vintage Atari 1040 STE Microwire Interface (LMC1992 IC).

You really need to look into the Teensy 4.x MCU datasheets, check this thread Post #4 by PaulStoffregen it has a lot of information: Port and toggle question T4

Is the github project files link broken I am getting 404 page not found ?

Well 1985+ Atari 8-bit computers seem to be using 65C02 CPU code name Sally not to be confused with 6502C, Sally was a customized 6502 chip used in later Atari 8-bit computers.
It has a HALT signal...

Interesting:)
While I didn't look into the details yet and I need to get some rest for tonight, will this work on Atari 130XE ?

Use Global Pin Control Low Register (PORTx_GPCLR) :https://forum.pjrc.com/threads/64970-Teensy-3-x-Global-Pin-Control-(Low-High)-Register-PORTx_GPCLR-PORTx_GPCHR-How-to

Happy holidays everyone and thank you for making this the best community. ;)

Who knows obviously seems like a code issue perhaps you should show us the full code.
Look up ^^^^^^ Forum Rule: Always post complete source code & details to reproduce any issue!

As I was promising yesterday I came up with 8bit PORT D [D0 : D7] Global Pin Control Low Register (PORTx_GPCLR) Example. ;)

/* PORTD [D0:D7] Global Pin Control Low Register (PORTx_GPCLR) Example....

Well I've been messing with this some more and I think I know how this works finally.
To set my D0 to D8 (8-bit) pins on Port D with 3-state logic which are defined as this:

#define D7 5 //PTD...

PORTx_GPCLR --- PORTx_GPCHR example:)
So I'm looking for Teensy 3.x example; yes I've been on the interwebs Google blah blah blah.
Basically I need to Tri-State (MUX(0) pin disable) several pins...

Sounds like you are powering the Teensy 3.2 with two power source at the same time. You need to separate VIN from VUSB if using external power supply at the same time.
22711

@ WMXZ
https://github.com/WMXZ-EU/MTP_t4
Missing preprocessor directives for Teensy 3.0/3.1/3.2/3.5 in MTP.h and MTP.cpp files.

In MTP.cpp: about LINE #519 #if defined(__MK66FX1M0__)
Replace...

Well there's some issues in MTP.h and MTP.cpp files.

In MTP.cpp: about LINE #519 #if defined(__MK66FX1M0__)
Replace with: #if defined(__MK20DX128__) || defined(__MK20DX256__) ||...

// T3.0 __MK20DX128__
// T3.1 - T3.2 __MK20DX256__
// T3.5 __MK64FX512__
// T3.6 __MK66FX1M0__

#if defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) ||...

This looks like it's missing define for teensy 3.1/3.2 :confused:

What you need is Bill Greiman`s library SdFat-beta Version 2.

It's been awhile since I use MTP but I had to compile the code at 450 MHz CPU speed in order for this to work on Windows 10 and TENSY...

Use Magnetoresistive RAM (MRAM).
MRAM has unlimited endurance and infinite Read/Write cycles; FRAM Reads are destructive and eventually lead to wear-out.

Everspin MRAM is available in a...

By default the SPI CLOCK speed = 30000000 Mhz (LED pin)

void setup()
{
tft.begin(); will use the default SPI CLOCK @ 30000000 MHz.
}

I believe KurtE provide the possibility to override...

Just got 14 PSram chips on My Way.
Big thanks to you Michael for this info. :D

Yes but you have to edit files:
in ............\hardware\teensy\avr\cores\teensy4\usb_desc.h
and in ....... \hardware\teensy\avr\boards.txt

NOTE: USB AUDIO has USB HID class Serial included

Try:
Serial1.end();
Serial2.end();
Serial3.end();
then
pinMode(Pin, OUTPUT);

Try this for a quick test:

//============================================================================
// SdFat version 2.0.0 BETA ONLY...

in void setup() { }

if (!sd.begin(SdioConfig(FIFO_SDIO))) { // SdFat.h Ver 2.0.0 Beta
Serial.println("m.SD initialization failed!");
} else {
Serial.println("m.SD initialization...

A couple of days ago I did post Teensy 4.1 3D CAD files in this thread: 3D Cad for Teensy 3.5 and 3.6
Perhaps this will help people find additional 3d formats.

@ luni

Unfortunately that's not possible with DesignSpark Mechanical free version, you can only do this with SpaceClaim Engineer.

With SpaceClaim Engineer, not only do you get the intuitive and...

Hi luni.

I see what I can do but it's getting too late tonight ( 3:13am ) I got to be up in the morning.

Okay so here I am releasing my 3d files in couple formats, note this is my first experience in 3d software.
All created with DesignSpark Mechanical version 3.
MIT License:
2031820319

Hey guys I'm about to release my Teensy 4.1 3D Cad Files just need to adjust few things on the bottom.
Quick preview:
20307

Frank you stole my idea;)
I am in United States but the post office so slow I order one from East Coast Adafruit NYC.
ESP32-WROVER-B Module - ESP32 with PSRAM Module
20202
I was jealous of you...

Well I'm having issues ordering one Teensy 4.1 and two PSRAM, under the payment I can type the credit card number no problem but as soon as I click - Place This Order Now
this shows up in...

Yeah something like that I was comparing files with Teensyduino 1.51 and Teensyduino 1.52 beta4.

Here is a PMF Player SdFat v2 BETA + DMAMEM Buffer + Audio USB example.
pmf_player_2_minimum.zip...

Thanks guys.
It's no fun getting injured with this covid-19 crap going on but the doctor said I'll be okay.

@defragster

Yeah I was surprised too, the code was running for two weeks straight...

Thanks defragster.
I have no idea really it has taken me two days to figure this out, at least it's running on Teensy 4.0 and Teensy 4.1 beta now.
Because of my eye injury today at work I will not...

All good on Windows 10 Except i'm running into trap stack overflow issue with my sketch on all the 1.52 beta :confused:

Arduino IDE 1.8.12.

For now this is my quick fix:...

Woohoo I guess I'm a lucky guy. ;)

Modified blink example:
Use PIN 13 & PIN 12.


/* Blink without Delay

Turns on and off a light emitting diode(LED) connected to a digital
pin, without using the delay() function. This...

@CP406

Use SdFat-beta library, 255 character limit.

My best guess:rolleyes: If it ain't broke don't fix it.
Because Teensy LC was not define it was basically using a AVR to ARM Teensy emulation, at least that's how I see it.