Carta 2 (three buttons and a screen)
The Carta 2 has three buttons, main, + and −, and a screen. Gesture timings are the factory’s, exactly.
How a gesture is read
Section titled “How a gesture is read”- A press counts once held for 50 ms.
- A group of clicks closes 375 ms after the last release.
- A press of 500 ms or longer is a hold. A hold is 1.25 s, except the 4th press, which is 1 s.
Controls
Section titled “Controls”When it is off
Section titled “When it is off”| Gesture | What it does |
|---|---|
| 5 clicks | Power on |
On the home screen
Section titled “On the home screen”| Gesture | What it does |
|---|---|
| + or − | Change the temperature (Classic) or the curve offset (Curve). Hold to repeat, five times faster. |
| 1 click | Wake, or back to home |
| 2 clicks | Start a session |
| 3 clicks | Open the menu |
| 4 clicks | Lock |
| 5 clicks | Power off |
| Hold | Slot picker: + and − browse, 2 clicks start, hold goes back |
| + and − held together for 1 s | Switch between Classic and Curve |
| 3 clicks + hold | Low-power mode |
During a session
Section titled “During a session”| Gesture | What it does |
|---|---|
| 1 click | Stop |
| 2 clicks | Add 10 s |
| 5 clicks | Stop and power off |
| + / − | Classic: change the live temperature. Curve: skip to the next or previous stage. |
In the menu
Section titled “In the menu”+ and − move, 1 click changes the item, hold goes back.
The items are: Mode, Units, Haptics, Brightness, Lights, Hot light, Stealth, Lock, Low power, Standby, FV revert, History, About, Back.
- FV revert chooses whether the official Focus V app is offered the factory update. OFFER is the default. QUIET keeps the app silent. See Using the Focus V app. It cannot be changed while locked.
- History shows your last 8 finished sessions, newest first: date and time (once the clock is set), temperature, Classic, Flower or Curve, length, and STOPPED if it did not run to its end. It also shows a dab score: the share of the run spent within 5 °C of the setpoint, shown after 40 samples.
When it is locked
Section titled “When it is locked”| Gesture | What it does |
|---|---|
| 2 clicks | Still starts a session (this is the factory behaviour) |
| 4 clicks | Unlock |
| 5 clicks | Power off |
| 3 clicks | Open a lights-only menu: Lights preset, Hot light, Stealth, Back |
When the screen is asleep, the first press only wakes it.
The screens
Section titled “The screens”The screen is true black with three colours: lime for Dialed, at temperature and progress, steel for values, and amber for attention. Labels are grey.
| Screen | What it shows |
|---|---|
| Boot | The Dialed D spins in, the needle sweeps, then the wordmark and CONTROL. |
| Home, Classic | A dial with the needle at your target. Below it: target temperature, preset (or CUSTOM), atomizer type and session length. |
| Home, Curve | The dial at the curve’s first stage, with the curve’s name in lime, its stage count, total time and offset. |
| Heating | The needle shows the live temperature and a steel marker outside the ring shows the target. The dial shifts from cool blue to lime as it nears the target. |
| Curve session | A chart of the planned curve with the measured temperature drawn over it, a playhead, the current stage and target, time left, and a ten-dot heat meter. |
| Presets and Curves | Up to six rows, the selected one marked in lime. |
| Message | An amber ring with the fault code and what to do, or a lime check for “UPDATE DONE”. |
| Locked | A padlock and “4 clicks unlock, 3 lights”. |
| Updating | A percentage and progress bar. “Keep the device close. Do not turn off.” |
| Charging | A battery outline with the level, and CHARGED in lime when full. |
To save battery, the screen dims to a third after 15 seconds without input, then switches off at the LED timeout (or shows the Focus V screensaver if you have one set).