noderademacher

Node.js / TypeScript client for Rademacher HomePilot / Start2Smart hubs over the local network (no cloud).

Spiritual successor to pyrademacher — same local REST API, TypeScript-native. If you can control a device in the HomePilot app, you can control it with this library. Covers/blinds, switches/plugs, dimmable actuators, Zigbee lights, thermostats/radiator valves, sensors and wall controllers.

Node only, local only. Talks HTTP to the hub on your LAN. No Rademacher cloud account is used or required.

Install

npm i @apocaliss92/noderademacher

Requires Node 20 or later.

Quick start

import { Rademacher, CoverDevice } from '@apocaliss92/noderademacher';

// Point at your hub (host or IP). Add `password` if the hub is protected.
const hub = new Rademacher({ host: '192.168.1.50' });

// 1. Connect (auto-resolves the api-version base path, logs in if protected)
await hub.connect();

// 2. List devices registered to the hub
const devices = await hub.listDevices();

// 3. Create a typed handle (fetches its initial state)
const cover = (await hub.createDevice(devices[0])) as CoverDevice;

// 4. React to polled state changes
cover.on('stateChanged', ({ changed }) => console.log('changed:', changed));

// 5. Control it
await cover.open();
await cover.setPosition(60); // 0 = closed, 100 = open

// 6. Re-poll whenever you like (HomePilot has no realtime push)
await cover.refresh();

Discovery

HomePilot has no broadcast/mDNS discovery (Rademacher's own integration finds it via DHCP MAC-OUI). So noderademacher discovers hubs by HTTP-probing the LAN — it confirms each host via the hub's identity endpoint:

import { Rademacher } from '@apocaliss92/noderademacher';

// Sweep every local /24 (bounded concurrency), or pass { subnet: '192.168.1' } / { hosts: [...] }
const hubs = await Rademacher.discover();
// → [{ host, model: 'HomePilot' | 'Start2Smart', name, firmware?, uid?, basePath, passwordProtected }]

for (const found of hubs) {
  const hub = new Rademacher({ host: found.host, basePath: found.basePath });
  await hub.connect();
}

Rademacher.discover({ subnet, hosts, concurrency, timeoutMs }) — narrow the sweep for speed. The Rademacher MAC OUIs (B0:1F:81, 38:FD:FE) are exported as RADEMACHER_MAC_PREFIXES if you want to pre-filter an ARP scan.

Devices — the gateway included, with all info

listDevices() / getDevices() return the hub/gateway itself as a separate device (a HubDevice, did = -1, category hub) first, then every physical device. Pass { includeHub: false } to omit it.

const devices = await hub.getDevices(); // typed handles, gateway first, each already polled
for (const dev of devices) {
  console.log(dev.name, dev.category, dev.describe());
}

describe() returns everything retrievable about a device: identity, battery, every capability (with value + min/max/step) and the latest statuses / readings. The HubDevice exposes firmware, hardware/software platform, DuoFern-stick version, node name, MAC, LED status and the firmware-update status.

Supported devices

Feature detection is by capability-name presence (device.hasCapability(...)), exactly like the reference library — never by product code.

How it works

1. Connect — probes http://<host>/… to resolve the api-version base path ('' v1 / /hp v2) and detect password protection; logs in via a two-stage salted SHA-256 challenge when a password is set (cookie session).
2. Devices — listDevices() reads /devices (full capability lists → feature detection + category).
3. State — createDevice() / refresh() read /v4/devices/{did} (statusesMap + readings).
4. Commands — every control is PUT /devices/{did} with { name, value? }.

HomePilot's local API has no realtime push, so state is refreshed by polling (device.refresh()).

Two gotchas worth knowing (handled for you)

• Cover position is inverted on the wire (HomePilot 0 = open). This library exposes the HA-style position (100 = open) and inverts on both read and write.
• Thermostat temperatures are deci-°C in state (/10) but plain °C in the write command — the model converts both ways.

Diagnostics dumper

import { createDumper } from '@apocaliss92/noderademacher';
const snap = createDumper(cover).dump();
// { did, category: 'cover', model, name: 'Ki*****', capabilities: [...], state: { statuses, readings } }

redact: true (default) masks the friendly name so dumps can be shared safely.

Error types

Credits & scope

Reverse-engineered from pyrademacher (the library behind the peribeir Home Assistant Rademacher integration). See docs/rademacher-homepilot-api-spec.md for the full protocol notes this port is built from. Not affiliated with or endorsed by Rademacher.

License

MIT — see LICENSE.