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Apr 24 • 69 tweets • 56 min read
🧵 Photos from Vintage Computer Festival East + InfoAge Science & History Museum, and more! vcfed.org/events/vintage… + infoage.org/exhibits #vcfeast2022 #vcfeast @vcfederation @InfoAgeMuseum @adafruit

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More from @adafruit

adafruit industries Profile picture
Jan 8
QT Py with ESP32-S3

just one more pcb design and then we promise we'll stop (naw, we will never stop) this is a swap-out of the ESP32-S2 QT Py for the new ESP32-S3 chip. The S3 is really a nice piece of kit - dual core is back and it also re-adds BLE.
It's basically an ESP32 with native USB, we're looking forward to it! note that the S3 chip looks a lot like the S2 but the chip pinout is NOT the same, the reset, and some power pins have moved. and some gpio shifted down one. also,
looks like the dual DAC was removed. anyways, just watch out don't think you can use the exact same layout. we had to shift a few parts but it all still looks like it fits! top part is identical to the S2 QT Py, and the bottom only shifted a few passives around.
Read 4 tweets
adafruit industries Profile picture
Jan 6
QT Py Bluefruit Routin' Party

Now we've got the QT Py SAMD21, RP2040 and ESP32-S2 designed and fabricated, we're going to follow up with an NRF52840 version! We've been using the @nordictweets nRF series for a loooooong time (anyone else remember the nRF8001?
it was like the AT90S2313 of bluetooth le for us). nRF52840 is the first one with native USB - and its plenty fast as a Cortex M4 at 64MHz and 256K of RAM. we already did a module-less route of this chip on the Circuit Playground Bluefruit so we know the schem capture is right.
so All We Gotta Do is route it to be about an inch square. We'll need to go with a very tight DRC on this board and probably 4 layer like on the S2. Good news is the board is tiny so PCB cost won't be a big deal.
Read 5 tweets
adafruit industries Profile picture
Nov 27, 2021
qt py esp32-s2 pre-order renders and pin checks + 🛍️💲9️⃣9️⃣ -> 🆓🌸🪶

with board support and functionality all tested, its time to neaten up the board and get ready for pcb ordering. top silk is done here, bottom silk still needs some work.
we've got the pretty-pins diagram made to verify pin functionality. in order to get the high speed spi port exposed, we dropped the adc's on those pins - you still get adc on all the other breakout pads.
schematic is minimal but, hey, it seems to work! since this qt py would be most benefited by a battery input, we popped another schottky on the bottom and a vbat pad. this is also our first 4 layer board.
Read 5 tweets
adafruit industries Profile picture
Nov 26, 2021
CircuitPython works with QT Py ESP32-S2 board :) Plus, get a free Pink RP2040 Feather in our Feather Friday sale!

This ESP32-S2 QT Py is so smol i just wannna pinch its lil cheeks! on the back is and ESP32-S2 with 4 MB Flash and 2MB PSRAM all stuffed inside this QFN chip.
we verified Arduino works last night. So today we've been testing out CircuitPython support. Here's an Adafruit IO demo that sends sensor data from plug-n-play QT boards over MQTT to a dashboard. this demo has been runnin all day flawlessly.
Just a few more tweaks to the design and silkscreen before we send off the PCBs - what color should we make this board? :)

oh and...don't forget, we've got 20% everything in the feather category at adafruit.com/feather
Read 4 tweets

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