Hi all, Have been working through this for a while now and am still finding some issues, so I was hoping a post might be able to shed some light on the problems I've been having. A quick bit of background. The project I'm working on is for a set of sequential shift lights for my car that come on o…

Hi John, Thanks for your reply. Good spot. If I sort these out, do you think the rest of the code should work ok? Thanks, Sean

seancarsonuk: do you think the rest of the code should work ok? Seems unlikely to me. The analog values you're writing are all very low which means the LEDS will barely glimmer even when they're on, and the code to decide which ones to turn on and off looks flawed to me (the threshold for turnin…

Hi,can you explain what you want the LEDs to indicate and what colour indicating what RPM condition. Also do you have bypassing capacitors around the voltage regulator, if not, look up the spec sheet for it and they should have a simple connection diagram showing the values required, These should b…

It's not clear to me why you have extra diodes going to some of the blue LEDs. Do you often get RPM's over 20,000? Could you say what you intend the display to look like at various RPM ranges? It's hard to say if the code will do what you want without knowing what you want.

I would have an array with an element for each LED. I would use the speed sensing to set appropriate values (HIGH or LOW) in the appropriate array elements. Then I would have a separate function that just lights the LEDs according to the values in the array. That function would need no decision mak…

Hi, just found this topic :slight_smile: This shiftlight was my first Arduino project, seancarsonuk contacted me for some information in a different forum, maybe his cars rpm signal is not compatible with my code, on my car it works quite well. I'm a complete noob when it comes to programming stuf…

Hafkai: this gives me a inaccuracy with rising rpm when using "pulseIn". If you want to know the frequency of a signal averaged over multiple pulses, it's better to count the number of pulses in a period rather than try to measure the pulse length.

Vehicle rpm sequential shift lights

Projects General Guidance

johnwasser May 7, 2014, 1:49pm 2

You are missing pinMode() calls for most of your output pins.

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Vehicle rpm sequential shift lights

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