Sparkshed

Sim-vs-Bench Evidence

What the simulator predicts, beside what the hardware actually does.

Sparkshed's simulator labels every analog result with a fidelity score and the physics it cannot model (unknownBadges). This page exists to make those labels checkable: three circuits from the quest line, the numbers the simulator produces, and the readings from the same circuits on a breadboard. A prediction outside its stated envelope is either explained here or the envelope is widened — that is the contract in §23.3.

Sim-vs-Bench: Bike Blink (bike-blink quest)

MEASUREMENTS NOT YET TAKEN — fill in with physical readings.

Predictions vs Measurements

Measurement Simulator Measured Delta Fidelity Unknown badges
D13 HIGH voltage (red LED on) 5 V ? — 0.7 thermal, rf, emi, supply_noise
D13 LOW voltage (red LED off) 0 V ? — 0.7 thermal, rf, emi, supply_noise
Red LED current, L-53ID through 220Ω — (5 − 2.0) / 220 13.6 mA ? — 0.7 thermal, rf, emi, supply_noise
Green LED current, L-53GD through 220Ω — (5 − 2.2) / 220 12.7 mA ? — 0.7 thermal, rf, emi, supply_noise
Red LED period (on+off, 300 ms each) 600 ms ? — n/a none
Full loop (both signals) 1200 ms ? — n/a none

Procedure

  1. Build the circuit on a physical breadboard using the listed MPNs.
  2. Power with 5V USB (Arduino Uno).
  3. Take voltage readings with a digital multimeter (probe at the net).
  4. Take current readings in series with the LED branch.
  5. Take timing readings with an oscilloscope on the output pin.
  6. Record all values above. Any prediction outside its fidelity envelope must be explained or the envelope widened (§23.3).

Generated by Sparkshed sim-vs-bench harness. Sim ≠ silicon — verify before you rely.

Sim-vs-Bench: Cardboard Buzz (cardboard-buzz quest)

MEASUREMENTS NOT YET TAKEN — fill in with physical readings.

Predictions vs Measurements

Measurement Simulator Measured Delta Fidelity Unknown badges
D13 HIGH voltage (buzzer driven) 5 V ? — n/a thermal, rf, emi, supply_noise
D13 LOW voltage 0 V ? — n/a thermal, rf, emi, supply_noise
Buzzer current — NOT MODELLED, no prediction exists not modelled ? — n/a piezo_not_modelled, thermal, rf, emi, supply_noise
Drive period (200 ms on + 200 ms off) 400 ms ? — n/a none

Procedure

  1. Build the circuit on a physical breadboard using the listed MPNs.
  2. Power with 5V USB (Arduino Uno).
  3. Take voltage readings with a digital multimeter (probe at the net).
  4. Take current readings in series with the LED branch.
  5. Take timing readings with an oscilloscope on the output pin.
  6. Record all values above. Any prediction outside its fidelity envelope must be explained or the envelope widened (§23.3).

Generated by Sparkshed sim-vs-bench harness. Sim ≠ silicon — verify before you rely.

Sim-vs-Bench: Traffic Light (Tier 4 quest)

MEASUREMENTS NOT YET TAKEN — fill in with physical readings.

Predictions vs Measurements

Measurement Simulator Measured Delta Fidelity Unknown badges
Active pin HIGH voltage 5 V ? — 0.7 thermal, rf, emi, supply_noise
Red leg current, L-53ID — (5 − 2.0) / 220 13.6 mA ? — 0.7 thermal, rf, emi, supply_noise
Yellow leg current, L-53YD — (5 − 2.1) / 220 13.2 mA ? — 0.7 thermal, rf, emi, supply_noise
Green leg current, L-53GD — (5 − 2.2) / 220 12.7 mA ? — 0.7 thermal, rf, emi, supply_noise
Red-only phase 5000 ms ? — n/a none
Full cycle (5 + 1 + 3 + 1) 10000 ms ? — n/a none

Procedure

  1. Build the circuit on a physical breadboard using the listed MPNs.
  2. Power with 5V USB (Arduino Uno).
  3. Take voltage readings with a digital multimeter (probe at the net).
  4. Take current readings in series with the LED branch.
  5. Take timing readings with an oscilloscope on the output pin.
  6. Record all values above. Any prediction outside its fidelity envelope must be explained or the envelope widened (§23.3).

Generated by Sparkshed sim-vs-bench harness. Sim ≠ silicon — verify before you rely.