Series resistor for an LED from supply voltage, forward voltage and current, wit
Series resistor for an LED from supply voltage, forward voltage and current, with nearest E12 and E24 values and real current.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
633 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://electronics-calc.x402tookit.com/led-resistor
| Category | Everything else |
|---|---|
| Provider host | electronics-calc.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 633 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"currentMa": 20,
"forwardV": 2,
"supplyV": 5
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"count": {
"description": "LEDs in series (default 1)",
"type": "integer"
},
"currentMa": {
"description": "Desired LED current in mA",
"type": "number"
},
"forwardV": {
"description": "LED forward voltage (red about 2.0, white and blue about 3.0-3.4)",
"type": "number"
},
"supplyV": {
"description": "Supply volts",
"type": "number"
}
},
"required": [
"supplyV",
"forwardV",
"currentMa"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"e12": {
"properties": {
"above": {
"type": [
"null",
"number"
]
},
"below": {
"type": [
"null",
"number"
]
},
"closest": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"e24": {
"properties": {
"above": {
"type": [
"null",
"number"
]
},
"below": {
"type": [
"null",
"number"
]
},
"closest": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"exactPowerMw": {
"type": [
"null",
"number"
]
},
"ledsInSeries": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"recommended": {
"properties": {
"actualCurrentMa": {
"type": [
"null",
"number"
]
},
"ohms": {
"type": [
"null",
"number"
]
},
"resistorPowerMw": {
"type": [
"null",
"number"
]
},
"series": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"resistanceOhm": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"voltageAcrossResistorV": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}