Everything I designed for Vira, in one place. Each card links to the story where the part was born. The files are free to download for your own boat.
Free for personal use, with credit to Viktor / Sailing Vira. No commercial use. License: CC BY-NC 4.0.
All design files on Google Drive ↗: one folder per design, each with a short README.
These are the designs I made for my own boat. They are not tested or certified. If you build or use them, you do it at your own risk. Please read the disclaimer.
Electronics
Boards I designed for Vira. Schematics, board files and firmware.
KhatkaPi baseboard
A baseboard for the Raspberry Pi 5 that runs OpenPlotter: protected USB, NMEA 0183, IMU, autopilot and power ports.
NavPod
A helm head unit with a 7-inch screen and 26 buttons, talking to OpenPlotter, Signal K and PyPilot.
Engine monitor
Temperatures, oil pressure, alarms, tachometer and battery voltages from the Yanmar to Signal K.
Dry bilge controller
Runs a small self-priming pump for 3 minutes every 24 hours to keep the bilge dry.
LPG solenoid controller
Sparkless switching and protection for the propane solenoid, with a timer.
Shower controller
Purges cold water from the hot line and runs the shower with one button.
Masthead light controller
Tricolor and anchor light on two wires to the masthead instead of three.
PSU / battery power switch
Switches the 12 V system between the shore power supply and the battery without a glitch.
WattCycle battery monitor
Reads the batteries over Bluetooth and sends the data to Signal K.
3D models
Parts I designed and printed, machined or had cut. STL, STEP and drawings.
Radar mast mount
One piece of 3/16-inch 5052 aluminum for a Halo20+, laser cut for about \$114.
Rudder sensor bracket and arm
A clip-on bracket for the steering cross member and a 32 mm arm for the rudder stock.
Settee locker latches
Spring latches for the settee lids, about \$1 each in filament.
Dyneema spreader caps and thimbles
Spreader caps and thimbles designed for synthetic shrouds.
Hatch adapter frames
G10 frames that fit modern hatches into the old Irwin openings.
Fixed window flange
The flange design for the fixed windows that finally stopped leaking.
Hand crank adapter
A winch handle socket so a standard winch handle starts the Yanmar.
Bilge pump air-bleed cover
A small cover that sends the bleed water back into the bilge.
Drawings and sketches
CAD drawings and the real notebook pages, where most parts started.
Autopilot steering geometry
Notebook math for the autopilot drive: ratios, forces and the belt.
Companionway measurements
Notebook sketches of the companionway frame and hatch from the first days.