Paul Stoffregen's Ethernet Kit Makes 100Mb/s Wired Teensy 4.1 Connectivity a Cinch — at Just $3.60

The through-hole soldering kit includes all the parts you need to break out the Teensy 4.1's 100Mb/s Ethernet header into a full-size jack.

The Ethernet Kit adds a full-size 100Mb/s Ethernet jack to your Teensy 4.1 for just $3.60. (📷: PJRC)

Engineer Paul Stoffregen has launched a kit of parts which allows Teensy 4.1 users to gain access to the development board's built-in Ethernet capabilities as quickly and easily as possible.

The Teensy 4.1 development board launched earlier this year as the first model in the family to boast 100Mb/s on-board Ethernet connectivity for wired networks. In a gumstick-format, breadboard-friendly board with one end taken up by a USB connector and the other by a microSD card slot, however, there's not a lot of room for an Ethernet jack — meaning anyone looking to make use of the new feature needed to add a breakout.

Now, adding that breakout is as easy as can be. "If you have a Teensy 4.1 and you've wondered which parts to use, or you just want to get all the right pieces," board designer Stoffregen writes of his latest product, "this kit is for you."

Sold as an unassembled kit of parts, the Ethernet Kit for Teensy 4.1 is comprised of a MagJack Ethernet connector, headers, capacitor, a ribbon cable, and a small printed circuit board. Based entirely on through-hole technology (THT) components, making soldering simple even for beginners, the kit should take only a few minutes to assemble.

Stoffregen's PJRC is selling the Ethernet Kit for just $3.60, with the Teensy 4.1 itself still available for $26.85. Both are in stock now for immediate shipment.

Gareth Halfacree
Freelance journalist, technical author, hacker, tinkerer, erstwhile sysadmin. For hire:
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