imrishabh18/rp2040-motor-controller

schematic/ChipDescriptions.tsx

import { Fragment } from "react";

/** Schematic-only notes, kept outside auto-layout sections so they do not move parts. */
const descriptions = [
  { ref: "U1", sheet: "controller", x: 3.5, y: 9,
    lines: ["Main application controller.", "Generates STEP/DIR control,", "reads current and temperature,", "and drives status outputs.", "No firmware is included."] },
  { ref: "U2", sheet: "controller_programming", x: 11.3, y: 0.2,
    lines: ["External QSPI flash.", "Stores RP2040", "application code."] },
  { ref: "U3", sheet: "controller_programming", x: -3.8, y: 1.7,
    lines: ["3.3 V regulator.", "Powers the MCU", "and board logic."] },
  { ref: "DRIVER", sheet: "motor_driver", x: -1.7, y: -1.2,
    lines: ["Dual H-bridge stepper driver.", "STEP/DIR controls both windings.", "Regulates winding current.", "1/16 microsteps; ~1 A peak."] },
  { ref: "U_PD", sheet: "motor_power", x: -2.5, y: -1.4,
    lines: ["USB-PD voltage controller.", "GPIO selects 5/9/12/15/20 V.", "Power-good gates motor enable."] },
  { ref: "U_TEMP", sheet: "thermal_protection", x: 2.2, y: 1.7,
    lines: ["TMP102 measures temperature", "near the motor driver.", "RP2040 reads temperature over I2C.", "Software decides alerts/shutdown."] },
  { ref: "U_CURRENT_A", sheet: "current_telemetry", x: -6.5, y: 3.3,
    lines: ["Measures winding A current", "across its 0.05 ohm shunt.", "Filtered output feeds ADC2.", "1.65 V at zero; 1 V per amp."] },
  { ref: "U_CURRENT_B", sheet: "current_telemetry", x: 7.5, y: 3.3,
    lines: ["Measures winding B current", "across its 0.05 ohm shunt.", "Filtered output feeds ADC3.", "1.65 V at zero; 1 V per amp."] },
  { ref: "U_ENCODER", sheet: "position_alarm", x: -8, y: -1.7,
    lines: ["Optional magnetic angle sensor.", "Reads shaft position over I2C.", "Requires an aligned shaft magnet.", "Not fitted in factory assembly."] },
] as const;

export const ChipDescriptions = () => <>
  {descriptions.flatMap(({ref, sheet, x, y, lines}) => lines.map((text, line) =>
    <Fragment key={`${ref}-${line}`}><schematictext
      {...{schSheetName: sheet}} schX={x} schY={y - line * 0.38}
      text={text} anchor="top_left" fontSize={0.26} color="#31576b" /></Fragment>,
  ))}
</>;