Home Made AFR
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I have seen a few posts which mention that this has been done. Does anyone have a circuit diagram/instructions on how to build one? Ideally I want to have a series of LED's in the dash.
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Yes, it's simple to do with an LM3914 bargraph driver. If you want some step by step instructions, check John's thread here. His project was powered by a 9 volt battery, but provided you're careful with the grounding it's easy to run the meter from the car's +12 supply, enabling you to integrate it completely into the dash.
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