Christopher Van HooseandClaude Fable 5
4e6b050cf8
Two faults, one of them mine from an hour ago.
CAL_SECS is 20 s and the M9's default screen timeout is also 20 s. The tick
pause added in 5a4a5a8 stopped the app the instant the screen blanked, which
is the same instant the calibration was due to finish -- so sampling stopped
half way, the auto-finish (inside on_tick) never ran, and the partial sweep was
fitted and saved without complaint. New wada.sys.keep_awake() holds the screen
AND the tick for a measuring app, and is released when the app closes.
The tumbling instruction was wrong too. Hard-iron calibration assumes the
device ROTATES in a uniform field; carrying it through the air also TRANSLATES
it through the field gradients of a laptop and a desk. Measured consequence: a
centre that moved 0.15 G between sessions against a 0.26 G horizontal signal,
i.e. tens of degrees of direction-dependent error -- which is what "it drifts
when rotating" was. The same device rotated flat in one place fitted a circle
to within 4%, so calibration is now exactly that: a 2D circle fit on x/y, which
is the only thing a heading uses.
And a bad fit can no longer be saved silently, which is how the broken one got
in. calib_solve refuses, with a reason, when the turn is partial (each axis
must span >= 1.4r), when the radius is outside Earth's real horizontal range
(0.08-0.45 G), or when the circle is too distorted (residual > 18% of r --
computed in closed form from the sums already collected). The progress line
shows coverage rather than a countdown.
Also: mag_norm is now the HORIZONTAL magnitude, which lets the app say "Hold it
level" when it departs from the calibrated radius -- the tell-tale for tilt,
which is the accuracy ceiling until the IMU is driven.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
wadamesh.com infrastructure
Distribution stack for wadamesh: a VPS nginx origin behind Cloudflare.
tiles.wadamesh.com →CF (HTTP, edge-cached) → nginx → OpenStreetMap / OpenTopoMap
firmware.wadamesh.com →CF (cache bins) → nginx → /srv/wadamesh/firmware
flasher.wadamesh.com →CF (HTTPS) → web flasher (TODO — see below)
wadamesh.com →CF (HTTPS) → landing page (later)
Map tile styles. The default /{z}/{x}/{y}.jpg route serves OpenStreetMap
(the firmware default). An opt-in OpenTopoMap topographic style is served from
/opentopo/{z}/{x}/{y}.jpg (explicit OSM alias at /osm/...); the device requests
it only when the user enables Map → Options → Topographic map. Legal: OpenTopoMap
map tiles are © OpenTopoMap (CC-BY-SA) over © OpenStreetMap contributors
(ODbL) + SRTM — the touch UI shows that attribution when topo is active, and the
14-day disk cache keeps each tile hitting OpenTopoMap at most once per fortnight
(their tile-usage policy asks for a contactable UA + caching, both of which the
transcode service provides). Deploying the topo routes = update
tiles.wadamesh.com.conf + tile-transcode.py, then
systemctl restart wadamesh-tile-transcode && nginx -t && systemctl reload nginx
and purge the Cloudflare cache for tiles.wadamesh.com/opentopo/*.
The firmware fetches tiles + the update-check over plain HTTP (on-device HTTPS isn't viable — mbedTLS needs ~30 KB heap, only ~5 KB is free post-Wi-Fi), so the tile + firmware hosts must stay reachable over HTTP. Cloudflare provides the edge cache, HTTPS for the flasher, and hides the origin IP (so no IP lives in this repo or the firmware).
1. VPS (origin)
sudo apt install nginx
sudo mkdir -p /srv/wadamesh/firmware/releases/TOUCH /var/cache/nginx/wadamesh-tiles
sudo cp deploy/nginx/tiles.wadamesh.com.conf /etc/nginx/sites-available/
sudo cp deploy/nginx/firmware.wadamesh.com.conf /etc/nginx/sites-available/
sudo ln -s /etc/nginx/sites-available/tiles.wadamesh.com.conf /etc/nginx/sites-enabled/
sudo ln -s /etc/nginx/sites-available/firmware.wadamesh.com.conf /etc/nginx/sites-enabled/
sudo nginx -t && sudo systemctl reload nginx
2. Cloudflare
- DNS:
A/AAAArecords fortiles,firmware,flasher,@→ the VPS IP, all Proxied (orange cloud). - SSL/TLS: mode Flexible (CF↔origin HTTP) is enough since the origin is
HTTP-only. Do NOT enable "Always Use HTTPS" on
tiles.orfirmware.— the firmware needs plain HTTP there. - Cache Rules:
tiles.wadamesh.com/*→ Eligible for cache, Edge TTL ~14d.firmware.wadamesh.com/releases/*/*.bin→ cache, Edge TTL ~1d.firmware.wadamesh.com/releases/TOUCH(the listing) → short TTL (~60s) or Bypass, so new releases appear promptly.
3. Publishing a release
From a wadamesh checkout (builds both boards, refreshes the listing, rsyncs up):
WADAMESH_VPS=user@your-vps scripts/release.sh beta_2
The on-device check GETs http://firmware.wadamesh.com/releases/TOUCH, finds the
highest beta_<N>, and (once OTA-over-Wi-Fi is re-enabled) pulls
…/releases/TOUCH/beta_<N>/<board>.bin.
Done
- Web flasher ✅ at
flasher.wadamesh.com—deploy/flasher/(esp-web-tools / Web Serial, board picker, manifests pointing at the rolling/latest/merged bins;release.shrefreshes/latest/each publish). - Apex
wadamesh.com301-redirects to the flasher — activate by pointing thewadamesh.comA record at the VPS in Cloudflare (it's still on the parking IP).
TODO before public launch
- Re-enable OTA-over-Wi-Fi in the firmware (currently it version-checks then defers to manual flashing).
- Flip
wadameshrepo public = launch. - Decide tile-proxy sharing: dedicated
tiles.wadamesh.com(this config) vs reusing the meshcomod proxy.
Never commit the VPS IP, SSH keys, or
WADAMESH_VPS. Cloudflare fronts the origin; the deploy target is supplied via the environment at publish time.