en:pageideas
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start → Landing page (what/why, live map, links, order status)
hardware: → HARDWARE
hardware:receiver → The OTM node (ESP32-C5 board, versions v2, jumpers)
hardware:power → Power: USB (either port, common +5V rail) vs PoE
(802.3af active / passive 7–58V, jumper positions)
hardware:antennas → Standard PCB antenna + external antenna options,
connector type, gain, 5.9 GHz band notes
hardware:enclosure → 3D-printed case (ASA), bottom.stl, screws M4x12 TX20,
LAN grommet, weatherproof mounting
hardware:leds → LED meanings (SYS blink states, LAN-port LEDs),
brightness control, disabling LEDs
hardware:build-your-own → DIY receiver (fill empfaenger_bauen): dev-board build,
Gerber/BOM/CPL, PCB fab
software: → SOFTWARE & CONNECTIVITY
software:first-steps → (migrate erste_schritte) unboxing, power + internet,
DHCP, minimal working setup
software:connectivity → How to get data online: SPI-Ethernet (W5500/ENC28J60)
direct, USB→Raspberry Pi, USB→Android (cits-to-go),
FritzBox 3390, v2x2map, ESPHome/Home Assistant
software:mobile-setup → Phone tethering: USB-Ethernet dongle + cable
(node cannot emulate a NIC), enable tethering AFTER
node is powered & linked, Android Auto use
software:node-registration → (keep) Self-Service Portal, MQTT connection string,
friendly name, show-on-map, heatmap
software:mqtt → MQTT topics (its/nodeXXX/packet/json, .../stats),
subscribing to own node, live-stream vs buffering,
why C-ITS is real-time (paho-mqtt caveats)
software:home-assistant → HA integration, sub-pub proxy / bridge pattern,
monitoring the node
reception: → RECEPTION & PLACEMENT
reception:optimal-placement→ Height, line-of-sight, urban vs quiet areas
reception:interference → 5 GHz Wi-Fi AP interference near 5.9 GHz, filters,
vertical separation, front-end desensitisation
reception:thermal → Heat (>60 °C reports), causes, mitigation
c-its: → C-ITS BACKGROUND (fill c-its)
c-its → What is C-ITS, message types (CAM, MAPEM, SPATEM…)
c-its:senders → Which vehicles/infra send C-ITS (VW/Volvo, ASFINAG
retrofits, trams, Car2x traffic lights, signatures)
sightings: → SIGHTINGS / FIELD FINDINGS
sightings → Landing: was gehört hier rein, wie eintragen,
Legende (signatur ja/nein, OBU-only, etc.)
sightings:at:vienna → Wien: Trams (Linie 2, MAC, ZN/Kurs), Ampeln, …
sightings:at:graz → Graz: …
sightings:de:aachen → Aachen: …
sightings:vehicles → Fahrzeugmodelle die senden (Audi A5, VW-Pakete,
Volvo) — modellbezogen statt ortsbezogen
api: → (fill api) map/data API, endpoints, data formats
faq → FAQ (see below)
community: → CONTRIBUTING
community:contributing → How to get edit rights, style, language policy community:order → Group order / Pretix, pickup (realraum Graz), shipping
FAQ:
- What do the LEDs mean? (SYS blinking = no connection yet)
- Does it matter which USB-C port powers it? (No — both share one +5V rail)
- My phone won't do USB tethering — why? (Node can't emulate a NIC; use USB-Ethernet dongle + cable; enable tethering after the node is up)
- Is there a data buffer when offline? (No — MQTT live-stream by design; only position/MAPEM are sensible cache candidates)
- Which antennas can I use? (→ hardware:antennas)
- Why is my node so hot? (→ reception:thermal)
- Why is reception poor despite good height? (→ reception:interference — nearby 5 GHz APs)
- How do I monitor my node in Home Assistant? (→ software:home-assistant)
- PoE vs USB / jumper settings? (→ hardware:power)
en/pageideas.1785936950.txt.gz · Last modified: by thomas585