12_neopixel_led_strip
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| 12_neopixel_led_strip [2026/08/02 13:42] – [Knight Rider Lights] walkeradmin | 12_neopixel_led_strip [2026/08/02 13:48] (current) – [Knight Rider Lights] walkeradmin | ||
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| So, what does this extra code do? and how? | So, what does this extra code do? and how? | ||
| \\ | \\ | ||
| - | \\ | + | \\ |
| + | Here is an explanation of the reverse code block in general. | ||
| < | < | ||
| # Backward direction (move the lit LED from right to left) | # Backward direction (move the lit LED from right to left) | ||
| Line 535: | Line 537: | ||
| time.sleep(delay) | time.sleep(delay) | ||
| </ | </ | ||
| + | |||
| + | And this is what the line that makes the count to backwards actually does. | ||
| + | |||
| + | < | ||
| + | range(NUM_LEDS - 2, 0, -1) | ||
| + | #Breakdown for NUM_LEDS = 12: | ||
| + | |||
| + | Start: NUM_LEDS - 2 → 10 | ||
| + | #(LED 11 was already lit in the forward chase) | ||
| + | |||
| + | Stop: 0 | ||
| + | #(but Python stops before 0, so last value is 1) | ||
| + | |||
| + | Step: -1 | ||
| + | #(count backwards) | ||
| + | </ | ||
| + | |||
| + | For the reverse sequence, we don't need to worry about the first (0) or last (11) LEDs as these are already set by the forward sequence. | ||
| + | \\ | ||
| + | \\ | ||
| + | That's it! Oh, and don't worry, I won't be fitting these to my car :) | ||
| + | \\ | ||
| + | \\ | ||
| + | ---- | ||
12_neopixel_led_strip.1785678176.txt.gz · Last modified: by walkeradmin