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QT Py 2040 - Smaller than Itsy Bitsy but no forum for it?
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QT Py 2040 - Smaller than Itsy Bitsy but no forum for it?

by LCDIntegrator on Sun Feb 28, 2021 6:29 pm

Basically if we want to solder 0.1" screw terminals to https://www.adafruit.com/product/4900, can we purchase https://www.adafruit.com/product/2140 from you to do so or will that not fit?

P.S. On the description for the QT Py 2040 page, you have the same text error I already reported and has not been fixed as it has been copied and pasted to the new QT Py as well. Probably elsewhere too?

"The RP2040 is a powerful chip, which has the clock speed of our M4 (SAMD51), and two cores that are equivalent to our M0 (SAMD1)."

Should be SAMD21. Missing the number 2 again.

Any chance you are going to both update the photo (probably since it will be a black PCB) and also add the dimensions of the board as well?

Seeeduino XIAO
Features
Powerful CPU: ARM® Cortex®-M0+ 32bit 48MHz microcontroller (SAMD21G18) with 256KB Flash, 32KB SRAM.

Does the QT Py have any SRAM? I get that it has 256KB of flash. No EEPROM though? SRAM is not EEPROM.

Lastly, using the full support for up to 16MB of off-chip Flash memory would certainly be better than just 4 MB!

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Mon Mar 01, 2021 1:40 pm

Looks like the SAMD21 description has been fixed at least!

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by adafruit_support_carter on Tue Mar 02, 2021 2:02 pm

That product is not even out yet. So product page may still be in edit as well.

The hole spacing is the standard 0.1". The terminal block you link has the same spacing. The pins would align. The only issue would be if the terminal block housing physically interferes with anything on the QT Py.

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Tue Mar 02, 2021 6:42 pm

adafruit_support_carter wrote:The only issue would be if the terminal block housing physically interferes with anything on the QT Py.


Which is what we are trying to determine. :)

Sparkfun for example puts their dimensions up already for their boards. https://cdn.sparkfun.com/assets/c/c/8/2 ... nsions.pdf but nothing from Adafruit yet.
Pretty sure the Feather version is slightly smaller than Sparkfun's Thing Plus version though not sure if the mounting holes line up or not?

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by adafruit_support_carter on Tue Mar 02, 2021 8:15 pm

When the product is released, there will be a Learn Guide along with schematics, dimensional drawings, links to the CAD files, etc.

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Wed Mar 03, 2021 8:30 am

Ok, sounds great. For the more popular items we have been seeing those more and more both here and through Sparkfun and it has been really helpful for products that are brand new. Launching in the middle of February as indicated didn't happen but hopefully this week for the RP2040 based products? Had some major snow weather where you are located that seems to have slowed things down but we noticed that the Tiny 2040 from the UK has officially been the first RP2040 launched product and you could buy up to two at a time. It actually managed to stay in stock for a few days before being completely sold out.

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Wed Mar 03, 2021 10:45 am

Would edit prior post but it does not seem to let me? Sparkfun launched their SparkFun MicroMod RP2040 Processor this morning.

https://www.sparkfun.com/products/17720

Assuming later today or in the next day or two we will see them launch their SparkFun Thing Plus - RP2040 and SparkFun Pro Micro - RP2040. Assuming Adafruit will do the same for their RP2040 products here very soon as well.

Seeing that the photos of the Feather RP2040 have been updated to reflect the actual product very recently.

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Thu Apr 08, 2021 1:08 am

https://www.adafruit.com/product/4900

8 MB SPI FLASH chip for storing files and CircuitPython/MicroPython code storage. No EEPROM

Seems accurate.

On this board there is 4MB, which is shared between the program it's running and any file storage used by MicroPython or CircuitPython. When using C/C++ you get the whole flash memory, if using Python you will have about 3 MB remaining for code, files, images, fonts, etc.

Seems not quite accurate now that this moved from 4 MB to 8 MB?

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Fri Apr 09, 2021 6:49 pm

Thanks for updating it. Out of stock again so guessing these are popular units!

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Fri Apr 09, 2021 6:51 pm

adafruit_support_carter wrote:When the product is released, there will be a Learn Guide along with schematics, dimensional drawings, links to the CAD files, etc.


Product has now been released. Looks nice! Any idea when those items will be released by chance?

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by 2bndy5 on Mon Apr 12, 2021 4:26 pm

When the product is released, there will be a Learn Guide along with schematics, dimensional drawings, links to the CAD files, etc.


TL;DR Please post a schematic

I'm developing support for nRF24 org, and trying to include all boards supported in the Pico SDK. It would be useful to have at least a schematic, so we can try to find a common set of available pins (concerning CSN, CE, and a IRQ pin) to use in our lib's examples (for the Pico SDK).

The Itsybitsy 2040 was also released, but the store page has no link to schematic also. However, there are pin labels (using Pico SDK scheme) on the bottom side of the Itsybitsy 2040 to aid in lack of a schematic. It looks like the Qt Py 2040 doesn't have these labels on the bottom side.

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by adafruit_support_carter on Tue Apr 20, 2021 1:31 pm


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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by LCDIntegrator on Tue Apr 20, 2021 2:33 pm

https://www.youtube.com/watch?v=00t5y4nQlH8 JP’s Product Pick of the Week 4/20/21 QT Py RP2040 coming soon as well!

At the time of launch, there is no Arduino core support for the chip on this board.


Arduino Mbed OS RP2040 Boards
by Arduino
Boards included in this package: Raspberry Pi Pico.

What about https://twitter.com/arduino/status/1380511120574844930 which has at least added support for the RP2040 to the Arduino mbed platform? There are also technically ways of getting the RP2040 mostly working with the original Arduino IDE (so not version 2.0) as well.

Still unclear that using the mbed for the RP2040 makes sense either.
https://www.raspberrypi.org/forums/view ... 4&t=309215

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Re: QT Py 2040 - Smaller than Itsy Bitsy but no forum for it

by adafruit_support_carter on Wed Apr 21, 2021 12:28 pm


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Please be positive and constructive with your questions and comments.