The Nano can blink the flight number and apogee of your most recent flight on its status LED, one digit at a time in colour, so you can read the result straight off the rocket with no computer or cable.
When it plays
- At switch-on. With
show_altitudeat 1, the default, the Nano blinks the last flight number and apogee at the end of start-up, then carries on to the pad. - A short press of the button. On the pad or in USB mode, a quick press of under 2 seconds plays the readout at any time. Launch detection pauses while it plays. If no flight is stored, it gives one short purple blink instead.
- A shake after landing. By default the Nano sleeps once the flight is saved. On Revision 4 and later, a firm shake for a second or two blinks the flight number and apogee, and each shake gives one readout. See after landing.
- Blinking the apogee after landing. With
maintain_powerset to 1, 2 or 3, the Nano blinks only the apogee after the save, until you switch it off or for 4 or 10 minutes.
How to read it
Each readout starts with a lead-in: ten quick blinks that speed up and then slow down, a one-second hold, and a short dark gap. The lead-in colour tells you what follows:
- Red lead-in: the flight number.
- White lead-in: the apogee, in metres to one decimal place.
Then each digit is blinked in turn, largest place first, in that place's colour:
- The number of blinks is the digit, from 1 to 9. Each blink is half a second on and half a second off.
- A zero is one long, steady hold of 2.5 seconds.
- There are 2 seconds of dark between one digit and the next.
- Leading zeros are skipped, but the units are always shown, and the tenths for the apogee.
| Colour | Digit place |
|---|---|
| Red | 10,000s |
| Purple | 1,000s |
| Green | 100s |
| Cyan | 10s |
| Yellow | 1s (units) |
| Blue | Tenths (altitude only) |
The flight number uses the same colours from the thousands down: purple, green, cyan and yellow. After the apogee there are 10 seconds of dark.
Examples
Flight 105
A red lead-in, then one green blink for the 1, a long cyan hold for the 0, and five yellow blinks for the 5.
Apogee 246.4 m
A white lead-in, then green twice for the 2, cyan four times for the 4, yellow six times for the 6, and blue four times for the .4.
Apogee 2,033.7 m
A white lead-in, then purple twice for the 2, a long green hold for the 0, cyan three times, yellow three times, and blue seven times for the .7.