Blog Archives

The CANable USB to CAN adapter is now cheaper and back in stock!

The CANable open-hardware USB to CAN adapter is now back in stock! You can order directly from the Protofusion Tindie store. I dropped the price to $25, making the CANable an even more affordable way to interface with the CANbus.

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Posted in Announcements, Projects

FeatherHAB Source Code Released!

FeatherHAB hardware and software source code are now available for download! The hardware is released under the Attribution-ShareAlike 4.0 International license and the firmware is released under the GNU Affero Public License. FeatherHAB Features: STM32F0 microcontroller SI446x transmitter broadcasting APRS

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Posted in Announcements, HAB, Projects

Open-Source SWD Programming Adapter

After making the switch from AVR to STM32 microcontrollers, I redesigned my old 6-pin ICSP pogo-programming adapter for SWD. The new design allows programming with pogo pins or a small pin header soldered to the pogo pads for debugging, all

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Posted in Projects, ProtoProg

CANable now available for purchase!

The CANable USB to CAN adapter is now available for purchase on the Protofusion Tindie store! The CANable is an open-source USB to CAN adapter that works on Linux, Mac and Windows. The CANable shows up as a virtual serial

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Posted in Announcements, Projects

Tenergy LiFePO4 CR123 Cell Test

I stumbled upon Tenergy’s lithium iron phosphate CR123 cells when looking for a fairly compact cylindrical rechargeable battery. The Tenergy RCR123A LiFePO4 cell, as listed on Tenergy’s website, supposedly has a nominal voltage of 3v and a nominal capacity of

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Posted in Projects

FeatherHAB: 2-gram High Altitude Balloon Tracker

FeatherHAB is a lightweight, small, and inexpensive balloon tracker. It tracks the location of a balloon with GPS and broadcasts the balloon’s position to the APRS network on 144.390MHz. The tracker is built around a Ublox MAX8 GPS module and

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Posted in HAB, Projects

Therm: a Tiny PID Controller

Therm is a very small PID controller with an OLED display, thermocouple interface, and USB port. It can switch an external solid-state relay for driving large loads, or a transistor for driving small loads. When attached to a computer, it

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Posted in Projects, therm

The CANable: a small USB to CAN adapter

The CANable is now available for purchase on the Protofusion store! The CANable is a hardware clone of Eric Evenchick’s CANtact project, an open-hardware USB to CAN adapter compatible with socketcan. I took his design and reworked the hardware to

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Posted in Projects

Immersion Heating with a Vacuum Tube

Recently I was doing some woodworking and wanted to try fuming a small test piece of oak with ammonia. The fuming process darkens the wood and gives it a nice aged, gray look. To speed the process up, I decided

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Posted in Projects

Luma Controller Development

The Luma Controller takes any audio input, calculates and analyzes a FFT of the spectrum, and sends commands out to a network of Luma nodes. This board duplicates the functionality of our music analysis software, but with greater flexibility and

Posted in MNL, Projects