







🚀 Elevate your Teensy game — connect smarter, build faster!
This breakout board module by Treedix is a precision-engineered PCB designed to expand the connectivity of Teensy 4.1, 3.5, and 3.6 microcontrollers. Featuring gold-plated dual-sided contacts and standard 2.54mm hole spacing, it ensures oxidation resistance and seamless breadboard compatibility. Ideal for professional-grade prototyping, it supports full pin access and integrates effortlessly with Arduino IDE, making it a must-have for advanced home automation, industrial control, and innovative electronics projects.
















| ASIN | B09NXYWYK7 |
| Best Sellers Rank | #262 in Single Board Computers (Computers & Accessories) |
| Brand | Treedix |
| Built-In Media | pcb board, pin header |
| CPU Manufacturer | ARM |
| Compatible Devices | Teensy 4.1, 3.5, 3.6 |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.3 out of 5 stars 52 Reviews |
| Included Components | pcb board, pin header |
| Item Dimensions L x W x H | 2.6"L x 1.6"W x 0.06"H |
| Manufacturer | Treedix |
| Mfr Part Number | TRX5-0275 |
| Model Name | Teensy 4.1 |
| Model Number | TRX5-0275 |
| Operating System | Linux |
| Processor Brand | ARM |
| Processor Count | 1 |
| RAM Memory Technology | LPDDR4 |
| Total Usb Ports | 2 |
| UPC | 764784799566 |
| Warranty Description | returnable |
| Wireless Compability | Bluetooth |
T**G
Thing Thing Is Great
Got it and had my new Teensy 4.1 mounted in about 15 minutes. It does take some soldering, of course but the pads solder easily. Disregard the comments about needing little red wires!! I think that photo is just showing that those pins are connected together. Each of the Teensy pin mounting points are directly connected to pin mounting points for the solder on screw terminals through runs on the board. No need for anything that's not in the kit - other than a Teensy, of course. As far as comments about the size of the terminal screws - yes, they are small, by necessity I'm sure. I have a jeweler's screwdriver set and and there are at least two screwdriver tips in it that fit the screw slots. If you don't have a set, get one!!
J**T
Prototyping Heaven with this one !!
Prototyping Heaven with this one !! And overnight delivery..... Hell yes please !
F**N
Thumbs up
Had to solder it together but expected that, had to solder the pins on the teensy so did both in 1 shot.
H**H
"Red" jumpers are not needed.
A previous review complained about the vendor not supplying the "Little Red Jumpers" as illustrated in the product page. That picture is somewhat misleading because where they show the jumpers there is a trace running between the two involved pads, all 48 pairs. The traces are a little difficult to see because of the black coating. Tilt the board a little under a light and they are easily seen. A quick check with a multimeter will also verify all 48 pairs are connected. As for the "tiny" screws on the green strips, just about any jewelers screwdriver set will have the 3/64" tip.
M**A
Good for the price.
Awesome solution for teensy, the terminals are little to small but is good for the price.
S**N
not assembled
First picture shows a fully assembled one but that's not how it comes and I have no desire to spend hours of my time soldering it up. Returned
S**E
Difficult to solder
The board looks mechanically fine but I had a very difficult time soldering in the headers. There is "gold" plating but I doubt it is gold or if it is the plating process was bad. I have had no difficulty soldering many other boards including tin plated and gold. For the price they should do a better job,
M**R
WARNING!! Photo is wrong. It will destroy your Teensy
The teensy in the photos is plugged in backwards! VIN is supposed to be next to the USB, not the SD card. When I plugged it in the way shown in this photo, my Teensy stopped blinking, and now it does not even communicate with my laptop at all, even without the breakout board connected. It turns out this is likely due to a design choice. The GND pins are tied together on the breakout board. This normally would be fine if the board is plugged in the right direction. But if you ever plug it in backwards and power it up, several of your GPIO pins will be shorted together, which as I have unfortunately shown, WILL DESTROY the teensy. Had they left all 40 pins isolated on the PCB, this would not have happened, and this danger would have been eliminated. I wish there were a way Treedix were able to replace my Arduino, because I was following their photo for how to plug it in.
Trustpilot
2 months ago
1 month ago