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.
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.
Engine monitor
Temperatures, oil pressure, alarms, tachometer and battery voltages from the Yanmar to Signal K.
Fridge thermostat
A refrigerator thermostat with alarms and a Wi-Fi web interface.
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.
Water tank fill controller
Cuts shore water when the tank is full and beeps.
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.
AIS rail clamps
Clamps for two parallel 1-inch tubes, printed in 316L stainless.
Rudder sensor bracket and arm
A clip-on bracket for the steering cross member and a 32 mm arm for the rudder stock.
Pedestal guard plate
A 316 stainless plate that fits the original Irwin pedestal.
Settee locker latches
Spring latches for the settee lids, about \$1 each in filament.
Refrigerator lid
An insulated lid and frame for the ice chest turned fridge.
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.
Rig dimensions
Mast, forestay, backstay and shroud measurements of the Irwin 34.
Companionway measurements
Notebook sketches of the companionway frame and hatch from the first days.