Math & Numbers
Compute the current-limiting resistor for LEDs in series with power, nearest standard value and wattage rating
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/led-resistor-calculator' \
-H 'Content-Type: application/json' \
-d '{"vs":5,"vf":2.1,"ifwd":0.02,"count":1,"series":"E24"}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/led-resistor-calculator| Name | Type | Required | Description |
|---|---|---|---|
| vs | number | Yes | — |
| vf | number | Yes | — |
| ifwd | number | Yes | — |
| count | number | No | — |
| series | select | No | — |
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-led-resistor-calculator": {
"name": "led-resistor-calculator",
"description": "Compute the current-limiting resistor for LEDs in series with power, nearest standard value and wattage rating",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=led-resistor-calculator",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "led-resistor-calculator",
"arguments": {
"vs": 5,
"vf": 2.1,
"ifwd": 0.02,
"count": 1,
"series": "E24"
}
}
}Questions or issues? Contact [email protected]
{
"result": "<div>Processed HTML content</div>",
"error": "Error message (optional)",
"message": "Notification message (optional)",
"metadata": {
"key": "value"
}
}