Teensy 4.1 Sources

F

Fozz

Member
Hi,

I am planning my first Teensy 4.1 project. Most of the parts will be bought from from Adafruit. Originally I was going to buy the Teensy 4.1 from PJRC .

With Sparkfun taking over I would buy from them. But then I did a search and I saw that Adafruit, Digikey, Microcenter and Proshield also sell them.

Last year I bought a woodworking tool from a local hardware store, versus buying from Home Depot or Lowes. It turns out that the local hardware store didn't sell many of what I bought, so mine was an older model versus what I would have gotten at Home Depot or Lowes. No big deal.

I'm assuming that Sparkfun has the the most recent batch of Teensy's.

I don't know if there might be old Teensy 4.1 for sale that don't have all the features that the current one has like ethernet, USB Host, PSRAM.

Question: Does any one have an idea who might have the oldest batch, I would like to NOT buy from that place?

Thanks
Bill
 
Sparkfun would have the newest batch.

However, they are identical to the last few batches PJRC manufactured.

If you're concerned about part changes (which should not have any effect on the actual features), the most recent change made to Teensy 4.1 was in early 2023 with the SD socket. Teensy 4.1 boards manufactured since 2023 have a SD socket with 8 small holes on the top where you can see the spring contacts which touch the bottom side the SD card, and the SMT pins are underneath the metal shield. Older Teensy 4.1 from 2020 to 2022 have a different SD socket without those 8 holes and with the SMT pins exposed. The change also as made to the audio shield. Here's a message where you can see the 2 SD sockets side-by-side.


In late 2021 and a few times in 2022 other parts were changed, especially the voltage regulator and Schottky diodes. Details are explained on the Teensy 4.1 product page near the schematic. 2021 and 2022 were extremely challenging years due to component shortages. But even those Teensy 4.1 boards had functionally all the same features.
 
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