To program the Teensy using the Arduino IDE, you must first have the IDE installed if it is not already. If it is installed but not the current version, now is a good time to update to the latest. Teensy 4.1 includes a USB host port, supporting 480 Mbit/sec high speed USB. While Teensy 4.0 has those USB host data signals on surface mount pads, Teensy 4.1 adds the hot-plugging power management needed to simply connect a USB host cable and be able to plug in a USB device. Or a USB hubs can be used to connect many USB devices. LOL. Yes. The 1Ghz RT1072 wasn’t released until after the 600Mhz RT1062. Both carry the Cortex-M designation.

Audio: fix stereo DAC right channel bug, fix DAC clipping overflow issue, fix FFT256 with LTO optimize (Frank)

Pinouts

What is the best project a user or yourself have done on teensy 4.0 ? Because I couldn’t find much online. Teensy 4.0 is purely a failure, do you agree with me? Hmmm I am a frustrated teensy 4.0 customer. :) :D VIN pin– External power of 3.6V to 5.5V can be applied to the VIN pin which also powers the on-board 3.3V regulator to power the rest of the module. I think PJRC does a good job with the hardware – but like a lot of hardware people (including many I’ve worked with) – they don’t think about the software and documentarian enough. After all, to them, it is obvious how to use it.. But it is okay, we can somehow agree, but what about the pinouts and the development under the NXP toolchain ? Because an above average user might have to squeeze out the maximum from it which might not be possible just with the kid’s friendly Adruino software IDE or whatever.

Teensy 4.1 includes a USB host port broken out to a five-pin through-hole header on the inside of the PCB, as was done on the 3.5/3.6 versions. The port will do 480 Mbps high-speed USB. It also adds the power management required for hot-plugging USB peripherals — just add a USB host cable, and you’re good to go. PJRC sells these cables, or you can use a USB2 cable scavenged from an old PC: the pinout is the same. The older Teensy 4.0 only has the USB data lines broken out to surface-mount pads on the PCB. microSD Card Slot single bit SPI protocol to access the card. SPI Flash Flash memory chips may be added using the SPI pins. These Definitive Guide to ARM Cortex-M3 & Cortex-M4 (book) - ARM Processor low-level details - easier to read platform. CPU performance is many times faster than typical 32 bit microcontrollers. Dual Issue Superscaler Architecture Cortex-M7 is a dual-issue superscaler processor, meaning M7 can execute 2 instructions

And the '2 Additional Flash Memory Locations' are different footprint sized like FLASH/RAM and the 8MB PSRAM access this memory. AVR libc functions may also be used. QSPI Memory Expansion Teensy 4.1 has 2 locations to add 8 pin QSPI memory chips. Both