HydroBot is a modular control system for automating hydroponic gardens. This system is designed with three objectives in mind. First, it will facilitate optimal growing techniques by using scheduling and feedback control loops to maintain state and adapt to changing conditions. Second, it will simplify controls…
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Blog Archives
HydroBot
Tagged with: DIY, Growing, HydroBot, Hydroponics, Linux, Open-Source Hardware, Plants
Posted in HydroBot, Projects
Posted in HydroBot, Projects
Therm RTD
Therm RTD is an addition to the Therm PID Controller family, with support for RTD temperature sensors. RTDs (or Resistance Temperature Detectors) use a coil of fine wire made from a material (usually platinum, copper or nickel) that has a very predictable…
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…
Tagged with: APRS, FeatherHAB, HAM Radio, High Altitude Balloon
Posted in Announcements, HAB, Projects
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…
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…
Tagged with: CANable, CANbus, Open Hardware, Open-Source Hardware, USB to CAN
Posted in Announcements, Projects
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…
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…
Tagged with: Amateur Radio, HAB, HAM Radio, High Altitude Balloon, MAX8, STM32, STM32F0, ublox
Posted in HAB, Projects
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…
The CANable: a small USB to CAN adapter
The CANable is now available for purchase on the Protofusion store! More information is available on the CANable website. The CANable is a hardware clone of Eric Evenchick’s CANtact project, an open-hardware USB to CAN adapter compatible with socketcan. I…
Crazyflie 2.0 Review
The Crazyflie 2.0 is a second generation nano quadcopter created by Bitcraze as part of their open-source flying development platform. Available for $180 from Seeed Studio, this developer-friendly kit seemed like the perfect way to dip my toes into the…