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Looks like the WaybackMachine has a copy.
https://web.archive.org/web/20191204100407/http://orchardelica.com/wp/?page_id=228

I was hoping to find this information in a T4 FAQ.
Also, is there a SDIO getting started guide or a forum topic that I should know about?

Thank you in advance.

Here's a nicely documented reference design.
http://www.mosaic-industries.com/embedded-systems/microcontroller-projects/electronic-circuits/push-button-switch-turn-on/microcontroller-latching-on-off

FWIW, I've used a USB device server successfully with the teensy 3.2. Silex makes the one I like. It allows full USB enumeration. It's as if the teensy is plugged into your USB port.

It's not...

FYI, The schematic is for standard mode. I haven't had a chance to work on parasitic mode.



This is a clever use of the DS28EA00. Do you use the temp function for anything? Maxim should sell a...

This schematic works.

8084

@mortonkopf There's a part of me that would love to see the parasitic mode working, I'll probably spend an hour or two and see how far I get. That said I'm rolling my own boards so the difference...

@mortonkopf, this may come down to my (mis) understanding of control function flowchart in the spec sheet.

8015

If I power VDD I get valid temperatures.

I assumed that if VDD wasn't powered...

@mortonkopf Here's how I have them wired.

8007 <<< Edit: This schematic doesn't work, see message #9 for more info and #12 for working schematic.


and here's the modified code. (The original...

@mortonkopf I'm running your github code for the DS28EA00. I don't have the LCD screen and I've commented out the LCD lines as noted in the comments. The ds28ea00_detect_num_devices() function works...

The speed of the SPI bus has been the bottleneck for me. I'd like to move four 288px X 512px images a second from an SD card to memory. It appears that the next version of the Teensy will have native...

@defragster, this also works. However I prefer moving the Loop(). Maintaining the prototype, as well as the function, is annoying. If I change from int to char in the function will I have to remember...

@mortonkopf, I ran into the same problem in post #55. Moving the Loop() after PoiSonic() solved it for me. I'm using 1.6.9.

Frank B,

Here's what I'd like to do at a high level. Parts ordered, no code written yet.

A few dozen BMP images are stored on an SD card. For this example we'll say they are 288X512 24 bit...

Frank, any news on your DMA LIB?
I've got two memory4 boards up and running, great job by the way, and I'd like to use them buffer data to/from an SD card.

@WMXZ, just curious how this project is coming along?

@Xenoamor, I wish I hand the chops to roll my own board.

@mortonkopf, that makes sense and points to the problem/challenge with streaming images from an SD card to the APA102 strips. I'll just...

Did you post the 3D model?
If so where?

Has anyone updated mortonkopf's SD/POI code from WS2811 to APA102 output?

If not is there something I should know?

I use it on a current project and would like to see how the APA102s preform.
...