2. The target¶
2.1 Models¶
| Model | Sensors | Power control | Connectivity |
|---|---|---|---|
| Fastmark Sport 55 | 5 | Push switch | Bluetooth |
| Fastmark Club 55 | 6 | Push switch | Bluetooth |
| Fastmark Sport 17 | 4 | Target-medium switch (no push button) | Bluetooth |
| First-generation Fastmark targets | 4 | Push switch | WiFi (see §3.7) |
The app shows each target's model name and photo in its target list, and adapts automatically — you never have to tell the app which model you own.
2.2 Powering on¶
Sport 55 / Club 55 / first generation: press the switch and hold it briefly until the LED lights up. A quick tap does nothing — the target checks that the switch is still held about a quarter of a second after the press, and silently goes back to sleep if it is not. It also refuses to start (again silently, no LED at all) if the battery is critically low or the electronics are too hot.
Sport 17: the target has no push button. It switches on when the target medium is inserted and switches off 8 seconds after the medium is removed.
When the target is on and ready its LED shows a steady dim blue (first-generation targets: steady dim red), and it appears in the app's target list within a couple of seconds.
2.3 Powering off¶
- Sport 55 / Club 55 / first generation: press and hold the switch for more than 1.2 seconds. The LED blinks three times and the target goes to sleep.
- Sport 17: remove the target medium; the target powers off 8 seconds later (re-inserting the medium within those 8 seconds cancels the shutdown).
The target also powers itself off in four situations:
| Automatic shutdown | Condition |
|---|---|
| Idle | 30 minutes without a shot or a series start (see §2.6) |
| Battery critical | Battery too low to operate reliably |
| Overheat | Internal temperature reaches 80 °C |
| App-commanded | Reserved for future use |
Every shutdown — manual or automatic — ends with the same three LED blinks. If a series is running on the app when the target powers off, the app is notified and releases the target cleanly (see §6.7).
2.4 LED signals¶
The target has one main light (three identical RGB LEDs on current models) plus a small white status light that is simply on whenever the target is running.
| What the LED shows | Meaning |
|---|---|
| Off | Target is powered off |
| Steady dim blue (first generation: dim red) | On and ready — waiting for the app |
| Steady red | Shooting sequence: get ready — the "Attention" phase and the final "Stop" phase |
| Steady green | Shooting sequence: fire — the shooting phase |
| Off during the "Load" phase | Normal — the preparation-phase light is disabled by default (it can be enabled in Settings → LED) |
| Three blinks | Powering off, or a firmware update just completed |
Everything the LED does during a series is controlled by the app: the brightness ("LED intensity") and which phases light up at all are set in Settings → LED. Sequence colors are always steady — the only blinking pattern the target ever shows is the three-blink shutdown/update signal.
Three things the LED deliberately does not indicate:
- Connection state. The LED looks the same whether or not a phone is connected. Use the app's target list for that.
- Charging. There is no charge indicator on the target; read the battery icon in the app.
- Low battery. There is no advance warning light — the first sign of an empty battery is the target shutting itself down (three blinks). Check the battery icon in the app before a match.
2.5 Battery and charging¶
The app shows a battery icon for every discovered target — updated roughly every 10 seconds, without needing to connect. The icon turns red at the lowest level; when the battery is critically low the target powers itself off.
While charging, the battery icon rises to the "charging" symbol at full charge, and the target stays awake regardless of the idle timer — a target left on the charger does not auto-shutdown, so it is always ready.
2.6 Idle auto-shutdown¶
To preserve the battery, a target powers itself off after 30 minutes with no activity. Any detected shot and any series start restarts the 30-minute countdown, so the target never turns off mid-practice.
On the Sport 55 and Club 55 you can disable this on a per-target basis: open the target's page in the app (§3.4) and turn the "Auto shutdown" switch off. A progress bar next to the switch shows how much of the idle countdown remains, with the remaining minutes displayed beside it. The setting is stored in the target itself and survives power cycles.
2.7 Factory reset¶
To restore a target's factory parameters (its default name and the auto-shutdown
setting): press the switch briefly three times, then hold it to power off as
usual. On the next power-on the target is back to its defaults. The default name is
F55 followed by four factory digits — you can rename it again at any time
(§3.4).
2.8 How hit detection works — and what it needs from you¶
Each shot's impact is located acoustically: the sensors time the arrival of the shot's sound wave and the app triangulates the impact point, compensating for the speed of sound at the current temperature.
Practical consequences:
- The target only listens while a series is running. Shots fired outside a running series are not recorded at all — this is normal, not a fault.
- Two shots less than about a tenth of a second apart cannot be separated; fire at a normal cadence.
- Temperature matters. The target measures its own temperature and the app uses it for the speed of sound. If the target sits in direct sunlight, its internal reading can be far off the air temperature — in that case enter the ambient temperature manually when creating the session (§5.3).
- A shot that lands outside the measured area, or whose sound reading is too degraded to locate reliably, is discarded rather than given a wrong score (§7.3).
2.9 Naming your target¶
Each target has a name (12 characters maximum) shown in the app's target list — useful as soon as a club owns more than one. Rename it from the target's page in the app (§3.4); the name is stored in the target itself, so every device sees the same name.