Note, I'm a software guy, so possibly I'm off track in terms of physical characteristics of electricity....
I could imagine that one way to do it is carefully cut heat shrink tubing so it has holes at the solder...
In terms of pin assignment and such, I have made the following spreadsheet that attempts to document the pin changes between the various ARM Teensies. I also wrote a higher level summary in the unofficial Teensy twiki...
To the OP, note except for the basic devices (Serial1, I2C1, SPI1), things may be on different pins. So, if you have made PCB's, you may need to revisit the PCB and layout.
It is problematical. The Teensy 4.0/4.1 does not have a DAC pin like the Teensy 3.2/3.5/3.6/LC microprocessors had. This means you can't just hook up the DAC pin to the prop shield and have it work.
Now, the Teensy...
If you want to use hardware SPI, then you do need to use the hardware SPI pins for MISO, MOSI, and SCLK. The CS pins can typically be any pin. There are some hardware optimizations if you use the special CS pins, but...
You might want to post your code exactly and mention what version of teensy dunio you are using. If you are using Teensy Dunio 1.56, it should just work, assuming you use BUILTIN_SDCARD for the SD card CS pin instead...
I assumed you knew about the audio shield, and you couldn't use it either due to cost or it interfered with something on your board.
Be sure to watch (and rewatch) this video on the audio adapter. Note, this was...
Mjs513 posted an article I did a few years ago. I haven't done much in the last few years due to covid lockdowns and my own health issues, and such.
But some other things that might be useful. If you aren't using...
Note, the Teensy 2 and Teensy 2++ are completely different processors (ATmega 32u4 if memory serves) than the ARM based Teensy LC, 3.x, and 4.x processors. Hopefully it will work straight out of the box, but it might...
There are various prototype boards that bring out the pins to positions you can use with a prototype board. Mostly, these are for getting access to the underneath pins of many of the boards. However, for just 5 pins...
If you are in Massachusetts, the Micro Center in Cambridge currently has 2 Teensy LC's and 2 Teensy 4.0's. I don't recall if You-do-it carries Teensys any more (they used to). FWIW, I'm in Ayer.
On the back of the Teensy LC pinout card (https://www.pjrc.com/teensy/pinout.html), it lists which pins can be attached to interrupts. IIRC, on the later Teensys, all pins capable of doing digital input can be an...
I've not used RTS/CTS, particularly with Teensy 4.0/4.1, but the Teensy library section on Serial UART devices has a description on what CTS/RTS pins can be used:
https://www.pjrc.com/teensy/td_uart.html
...
I agree, I've hated Python ever since it came out due to the white space requirements. I'm a perl programmer from way back, and I would have preferred perl to have won the mindspace that Python got, but that is just me...
I'm curious if there is a reason you are sticking with the Teensy 4.0 instead of using the Teensy 4.1? The Teensy 4.1 has the SD card slot built-in, plus you can solder a PSRAM chip underneath if you need more space. ...
Technically, using "L" as a suffix makes the constant 'long double'. Fortunately for the usage, on current ARM compilers, 'long double' has the same representation as 'double'. But on other systems, 'long double' is a...
Those are solder pads that may be connected, but that with a knife you can disconnect them.
The top one is the connection between VUSB and VIN. Normally VUSB is connected to VIN to power the Teensy from the USB...
In general let me say, I am a software guy, not an IEEE engineer, so assume all of my answers are as I grok things (and having been part of this community since the original Teensy 3.0), and not with deep understanding...
Well unless you are wedded to using a Teensy 3.2, another option is to get the Teensy 4.1 (which has a built-in SD card slot) and the new SmartMatrix display made for the Teensy 4.0/4.1 (note, the display made for the...
I am a computer programmer that has worked on compilers for over 33 years. I have been working on the GNU GCC compiler for over 20. Outside of work, I tend to be known for my steampunk camera (see http://www.steampunkmike.org for more details).
Location:
Ayer Massachussetts
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digital photography, steampunk, renaissance faires, hobby electronics
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