arschvario

Bridges the vario (climb rate) from the Condor soaring simulator to a buttplug.io device.

It reads FreeVario-style NMEA sentences from a serial port, picks out $PFV,VAR,<climb in m/s>, and drives one or more toys through a Buttplug server (Intiface Central):

Feel

• Climbing – strong pulsing that gets faster and harder the stronger the lift, emulating the beeping of an audio vario.
• Sinking – a light, constant vibration that grows a little with the sink rate.
• Around zero – off.

Everything is tunable from the command line (--help).

Setup

1. Buttplug server

Install Intiface Central, start the server (default websocket ws://127.0.0.1:12345), and make sure your toy is paired.

2. Get $PFV,VAR onto a serial port

$PFV,VAR is a FreeVario sentence.

1. Condor: Options → Settings → NMEA output – enable it, choosing a serial port (or a UDP target if you route it through something else).
2. Create a virtual null-modem pair (e.g. com0com on Windows, socat on Linux). Condor writes one end, arschvario reads the other. If you already have a tool that emits $PFV,VAR directly, just point arschvario at that port.

3. Run

# real setup
arschvario --serial-port COM7

# try it without Condor first (synthetic climb/sink waveform)
arschvario --simulate -v

Useful flags:

flag	meaning	default
-p, --serial-port	port to read NMEA from	–
-b, --baud	serial baud	115200
-s, --server	Buttplug websocket URL	ws://127.0.0.1:12345
-d, --device-index	drive only this device	all vibrating devices
--invert	flip climb/sink if they feel swapped	off
--max-intensity	hard ceiling on vibration (0–1)	1.0
--climb-ref	climb rate (m/s) that maxes out the pulsing	3.0
--pulse-hz-min / --pulse-hz-max	pulse rate range while climbing	1.5 / 8.0
--sink-amp-min / --sink-amp-max	constant vibration range while sinking	0.12 / 0.30
--data-timeout	stop the toy after this many seconds of silence	3.0
-v / -vv	debug / trace logging	–

Ctrl-C stops all devices and disconnects. If the serial port or the Buttplug server drops, arschvario keeps retrying.

Build

cargo build --release
cargo test