This is a small tutorial.
You can add an LED strip to the DIY version. WS2812B LEDs are recommended — a standard LED strip works perfectly.
First of all, update the firmare to the last version.
Foxlap requires a minimum of 3 LEDs and supports up to 15. The default is 5 LEDs, but this can be adjusted in the settings menu.
Power them with +5V, and the control pin is GPIO12 on the ESP32.
(Note: GPIO12 does not cause any issue for the ESP32 as long as it is not driven HIGH during boot wich is not the case).
There are 6 LED display modes yet:
1 – Disable
No LEDs are used.
2 – RPM Level Meter
This mode displays the RPM level. The maximum value is defined in the settings.
3 – Sectors
The LEDs show red or green depending on whether you achieved a better sector or not. 1 LED per sector.
4 – Live Delta
Red or green depending on whether you are ahead or behind.
5 – Threshold Alert
Two blue LEDs light up when the target temperature is reached — this usually means you should open the radiator shutter.
The LEDs turn red once the alert temperature is reached.
6 – Oleksandr Threshold Alert
This is another temperature warning mode, designed by a user (Oleksandr, hence the name).
Here is how it works:
- Starting from the notification temperature, one blue LED lights up.
- For each additional degree, another blue LED lights up (up to notification temperature +5°C).
This indicates that you are within the optimal engine operating range. - Beyond notification temperature +5°C, the LEDs turn orange and gradually shift color with increasing temperature until they become red at the alert temperature.
- Once the alert temperature is exceeded, all LEDs flash red.
let me know…
What a great feature. Thank you so much for all your efforts!
I have the led bar with 8 leds. Would it be possible to make it choosable between 5 and 8 leds? Would like to keep my 8 leds because of better resolution for rpm or more segments for sections? Thanks 🙂
update the firmware. starting 2.03 there is an option to set the number of LEDs
Perfect! I checked it and found that I can change the number to 8, but only 5 led are burning. When going down to 4 or 3, then the correct numbers of leds are on. There must be a bug.
Also when settings to 8 and make a restart, only 5 leds show the startup sequence.
A cool feature could be a shift light. Using Rpm level meter and when hitting the target rpm all leds flash blue for a second for example…
right… Classic case of confusing constants with variables 😄 i need some rest i think
please try v2.04
🙏🏻 now it is working!! AMAZING!!