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Control Replay Trigger (By Time / Time + Temperature)

This page explains Control Replay trigger options. They decide whether control changes (heater, fan, drum) are applied by time or by temperature.

New in v1.4.0.


1. Scope

In Auto Replay Roasting > Control Replay, the app replays the recorded control actions from your selected profile. Now you can choose how those actions are triggered, so the replay fits different roast pacing.

Only affects Control Replay. Bean Temp Tracking (PID) is not affected.


2. Two options

2.1 By Time

  • How it works: applies control changes strictly at the recorded timestamps.
  • Best for: stable setup and you want to match the original timing as closely as possible.

2.2 Time + Temperature (default)

  • How it works: the first control point, all points before the reference turning point, and increases happen by time. Decreases after the reference turning point wait until bean temperature reaches the reference point.
  • Best for: variable environments or batches that run fast and risk overshooting.

3. Selection Guide

  • Want strict timing → choose By Time
  • Want more stability → choose Time + Temperature (default)
  • No clear preference yet → start with Time + Temperature

4. Examples

Example 1: Roast is faster (decrease happens earlier)

Reference: at t=2:00, BT=170C, heater 80 -> 60 (decrease) Actual: BT reaches 170C at t=1:50

Timeline: 1:40 -----1:50-----2:00-----2:10
BT:               hits 170°C

By Time:                 [decrease]
Time+Temp:        [decrease]

Example 2: Roast is slower (decrease happens later)

Reference: at t=2:00, BT=170C, heater 80 -> 60 (decrease) Actual: BT reaches 170C at t=2:10

Timeline: 1:50 -----2:00-----2:10-----2:20
BT:                        hits 170°C

By Time:         [decrease]
Time+Temp:                   [decrease]

Example 3: Increases always follow time

In Time + Temperature mode, increases still follow time to keep pace. Example: reference says t=2:30 heater 60 -> 70, replay still triggers at t=2:30.


5. Settings Entry

  1. Go to Prepare Roasting and choose Auto Roasting.
  2. Select Control Replay.
  3. In Auto Roasting settings, choose Control Replay TriggerBy Time or Time + Temperature.

6. Usage Notes

  • Control Replay needs a profile with recorded control actions (heater/fan/drum).
  • You still need to drop manually, and you can end auto replay anytime to take over.