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API · /loadcell-api

Load Cell API

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Load-cell (weighing-transducer) maths as an API, computed locally and deterministically. The output endpoint computes the bridge output voltage a strain-gauge load cell produces under a given load, Vout = (load/capacity)·sensitivity·excitation, where the full-scale output FSO = sensitivity(mV/V)·excitation(V) is reached at the rated capacity — it returns the output in millivolts, the equivalent mV/V at that load and the capacity utilization, and flags overload. The load endpoint inverts this to recover the applied load from a measured bridge output, load = (Vout/FSO)·capacity. The array endpoint sizes a multi-cell weighing platform: from the number of identical cells, the per-cell capacity and the live and dead (tare) load it returns the evenly distributed per-cell load, its output and utilization and the total system capacity, so cells can be chosen to stay under capacity in the worst case. Sensitivity is in mV/V, excitation in volts (default 10), output in millivolts; load and capacity share any consistent unit. Everything is computed locally and deterministically, so it is instant and private. Ideal for industrial-weighing, scale, force-measurement, silo and process-control app developers, load-cell sizing and calibration tools, and instrumentation education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is load-cell transducer output; for the underlying Wheatstone-bridge and strain maths use a Wheatstone-bridge API.

#load-cell #weighing #force #transducer #instrumentation #developer-tools
api.oanor.com/loadcell-api
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/api/loadcell-api/openapi.json
/api/loadcell-api/llms.txt

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API salute

salutare
Tempo di attività
100.00%
Sondaggi del server · 24 ore su 24
Latenza media
88 ms
Sondaggi del server · 24 ore su 24
Abbonati
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attiva
Chiamate totali
20
ultimi 7 giorni
status Pagina di stato completa → · 24 sonde/24h

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  • 2 req/seg
  • Salida + carga + array
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Starter

€10.00 /mese

  • 46,000 chiamate/mese
  • 6 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 46,000 calls/month
  • 6 req/sec
  • Full-scale output, utilization, overload
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€24.00 /mese

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  • 15 richieste/secondo
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  • Multi-cell platform & calibration pipelines
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Type-K thermocouple temperature/voltage conversion as an API, computed locally and deterministically from the official NIST ITS-90 reference functions. The voltage endpoint converts a junction temperature in °C to the thermo-electromotive force in millivolts using the NIST type-K direct polynomial (with its Gaussian correction term above 0 °C), and performs cold-junction compensation by subtracting the reference-junction EMF, so a hot junction at 200 °C against a 25 °C terminal block gives the EMF your meter actually reads; a type-K junction produces 4.096 mV at 100 °C and 41.276 mV at 1000 °C against a 0 °C reference. The temperature endpoint does the inverse: it takes the measured EMF in millivolts and the reference-junction temperature, refers the reading back to 0 °C by adding the cold-junction EMF, and returns the hot-junction temperature in °C and K — obtained by numerically inverting the same monotonic forward polynomial, so it is exactly consistent with the forward conversion. Type K (chromel–alumel) covers −270 to 1372 °C. Everything is computed locally and deterministically, so it is instant and private. Ideal for industrial-automation, process-control, data-acquisition, IoT-sensor, furnace and lab-instrument app developers, sensor-linearization and cold-junction-compensation tools, and embedded firmware. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 2 endpoints. This is the type-K thermocouple; for resistance-temperature detectors use an RTD/PT100 API.

api.oanor.com/thermocouple-api

Wheatstone Bridge API

Wheatstone-bridge and strain-gauge maths as an API, computed locally and deterministically. The bridge endpoint takes the four arm resistances R1–R4 and an excitation voltage and returns the bridge output voltage between the two midpoints, Vout = Vin·(R2/(R1+R2) − R4/(R3+R4)), in volts and millivolts, the voltage at each midpoint, and whether the bridge is balanced (Vout = 0 when R1·R4 = R2·R3). The balance endpoint inverts it: give any three arms and it solves the fourth resistance that balances the bridge, the classic way a Wheatstone bridge measures an unknown resistance. The strain endpoint models a strain-gauge bridge — quarter, half or full — and converts in both directions between mechanical strain and electrical output: from a gauge factor and a strain (given directly, as microstrain or as a relative resistance change ΔR/R = GF·ε) it returns the output ratio and voltage Vout/Vin = (k/4)·GF·ε where k is the number of active arms, and from an output voltage and excitation it returns the strain and microstrain. Everything is computed locally and deterministically, so it is instant and private. Ideal for instrumentation and sensor tools, load-cell, pressure-sensor and RTD measurement design, strain-gauge and data-acquisition apps, and electronics education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is bridge and strain-gauge measurement; for Ohm's law, voltage dividers and series/parallel resistor combinations use an Ohm's-law API.

api.oanor.com/wheatstone-api

Dice Probability API

Tabletop dice-probability maths as an API, computed locally and deterministically and exactly — the odds behind the rolls, not the rolls themselves. The advantage endpoint gives the D&D-style chances of beating a target on a d20 (or any die) rolling normally, with advantage (roll twice, keep the higher) or with disadvantage (keep the lower): needing an 11+ is 50 % normally, 75 % with advantage and 25 % with disadvantage, and it reports the average roll — advantage lifts a d20 from 10.5 to about 13.8. The pool endpoint handles success-counting systems (World of Darkness, Shadowrun): for a pool of dice that succeed on a face at or above a threshold it gives the chance per die, the expected number of successes and the exact binomial probability of getting exactly, or at least, a target number — six d10s succeeding on 7+ average 2.4 successes with a 45.6 % chance of three or more. The exploding endpoint gives the mean of an exploding ("acing", open-ended) die that re-rolls and adds on its maximum face — a d6 averages 4.2 instead of 3.5. Everything is computed locally and deterministically, so it is instant and private. Ideal for tabletop, virtual-tabletop, game-design and TTRPG app developers, odds-and-probability helpers, and game-master tools. Pure local computation — no key, no third-party service, instant. Exact maths, no simulation. Live, nothing stored. 3 compute endpoints. For random rolls use a dice-roller API.

api.oanor.com/dicepool-api

Catering & Party API

Catering- und Partyplanungs-Mathematik als API, lokal und deterministisch berechnet – die Wie-viel-kaufe-ich-Zahlen, mit denen ein Gastgeber oder Caterer eine Personenzahl plant. Der Food-Endpunkt skaliert ein Menü auf die Gästeanzahl und den Appetit: das Hauptprotein mit etwa einem halben Pfund gegartem Fleisch pro Person (leicht 0,33, herzhaft 0,75), jede Beilage mit etwa vier Unzen pro Kopf, sechs Appetizer-Stücke pro Person und eineinhalb Dinner-Brötchen – also benötigen 50 Gäste bei einem Standard-Dinner mit drei Beilagen 25 Pfund Fleisch, 300 Appetizer und 75 Brötchen. Der Drinks-Endpunkt dimensioniert die Bar: etwa ein Getränk pro Gast pro Stunde plus ein Extra in der ersten Stunde, aufgeteilt auf Bier, Wein und Cocktails und umgerechnet in die realen Einheiten, die man kauft – Bier im Kasten (24) und im Fass (~165 Portionen), Wein in der Flasche (~5 Gläser), Spirituosen in der 750-ml-Flasche (~16 Shots) – plus das Eis (etwa 1,5 Pfund pro Gast) und Wasser; eine Party mit 50 Gästen und vier Stunden kommt auf 250 Getränke, 125 Biere (0,76 eines Fasses), 15 Flaschen Wein und 75 Pfund Eis. Alles wird lokal und deterministisch berechnet, also ist es sofortig und privat. Ideal für Eventplanungs-, Catering-, Hospitality- und Party-App-Entwickler, Einkaufslisten- und Personenzahl-Tools sowie Gastgeber-Rechner. Reine lokale Berechnung – kein Key, kein Drittanbieter-Service, sofortig. US-Einheiten; Faustregeln – aufrunden. Live, nichts wird gespeichert. 2 Compute-Endpunkte. Anpassung an die Menge und die Jahreszeit.

api.oanor.com/catering-api

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Qual è il limite di velocità di Load Cell API?
Il piano gratuito consente 1 richiesta al secondo. I piani a pagamento arrivano fino a 50 richieste al secondo nel piano Mega. I limiti rigorosi restituiscono HTTP 429 oltre la quota — nessuna spesa imprevista.
Quanto costa Load Cell API?
Load Cell API ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €10.00 / mese con quote più alte e limiti di velocità più rapidi.
Posso cancellare l'abbonamento in qualsiasi momento?
Sì. I piani sono fatturati mensilmente e puoi cancellare in qualsiasi momento dalla dashboard di fatturazione. Nessun contratto a lungo termine e nessuna penale di cancellazione.
Load Cell API è conforme al GDPR?
Tutte le richieste a Load Cell API passano attraverso il nostro gateway in UE. La tua chiave upstream non lascia mai il nostro server e nessun dato personale viene condiviso con il fornitore upstream oltre alla richiesta inviata.

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curl https://api.oanor.com/loadcell-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/loadcell-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/loadcell-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/loadcell-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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