Axiometa BrodBoost-C is a USB Type-C breadboard power supply with a simple design that powers both rails of a breadboard with voltage adjustable between 3.3V or 5V. It also includes an on/off switch, an LED indicator, and built-in fuse protection.
BrodBoost-C specifications:
- Output voltage – Adjustable: 3.3V or 5V DC
- Maximum current – 1A
- Ports
- USB Type-C connector for power input
- 2x 2×5 2.54 mm breadboard-compatible power and ground rails
- 2x 3-pin 2.54 mm selection headers with 2x jumper caps
- Safety – Short circuit protection
- Input filtering – Ferrite bead for noise suppression and decoupling capacitors
- Misc – Red Power LED, ON/OFF power switch
- Voltage regulation:
- 5.0 V selected by USB CC Pins (5.1 k resistors)
- 3.3 V step-down regulation via AMS1117-3.3
- Dimensions – 54 x 19.5 x 11.4 mm
- Weight – About 20 grams
We’ve written about several breadboard power supplies over the years including the Toaster board with 5 to 16V adjustable voltage, the SwitchTrick switching power supply board, and the MEGO portable breadboard power supply with a built-in battery. We also covered a USB Type-C breadboard power supply last month, namely the XIAO Powerbread supporting 5V and 3.3V power rails, but also integrating a power meter function. The BrodBoost-C has a much simpler design just delivering 3.3V to 5V power to both rails.
The BrodBoost-C is also open-source hardware with the KiCad schematics and PCB layout, Gerbers, and BoM released on the product page where you’ll also find the STEP file for the 3D model.
Axiometa launched its breadboard power supply on Crowd Supply with a $5000 funding goal. You can pledge $32 with free worldwide shipping to get the BrodBoost-C shipped by Jul 11, 2025. It looks a little pricey compared to the XIAO Powerbread going for $19.99 on Seeed Studio, but users need to add a few dollars to get a XIAO ESP32/RP2040 board, and the price does not include shipping. I could also find a cheap USB-C breadboard power supply on AliExpress for about $5 to $6 shipped.

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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It’s not clear to me why they have to waste ~4 rows when 1 (2 if you count the PCB margin) should be sufficient. The connector should be one row, not 3 IMHO. But yes, that can be a useful device, possibly more convenient than the older jack-equipped ones nowadays.
They must have revised the design goals and redone this a few times, it sure has a weird mix of contradictory information. It’s name is ‘boost’ but with a fixed 5V input and 3.3V output there’s no call for boosting, the specs and half the photos claim it’s just a AMS1117 LDO wired to a USB-C port, but the other half of the photos and the schematics claim it’s a TPS63001 buck-boost. I don’t know, with it just being a fixed 5V to 3.3V board and the port just using hard-wired resistors on the CC lines to hope it can… Read more »
Looks interesting, however the CANADUINO can do 12v. I also can’t tell from the marketing copy if this can do different voltages on the two rails like the CANDUINO. The CANADUINO (what a goofy name, typing that 3 times) seems considerably more useful.
https://www.elecrow.com/store/CANADUINO
Moreover, “adjustable 3.3v to 5v” indicates, at least to me, that it supports all the range between 3.3v and 5v, while using “selectable 3.3v or 5v” would indicate (as it should) that only 3.3v and 5v are supported.