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docs: update speeduino_jarjestelman_komponentit

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Mikael (kemes) 2020-11-13 12:35:28 +00:00 committed by Josh Stewart
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title: Speeduino-järjestelmän komponentit
description:
published: true
date: 2020-11-13T12:30:14.113Z
date: 2020-11-13T12:35:21.365Z
tags: elektroniikan komponentit
editor: markdown
dateCreated: 2020-11-13T12:11:48.259Z
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### Kampia- ja nokka-akselin anturit
Nämä anturit ovat Speeduino järjestelmän toiminnan kannalta ne kaikista tärkeimmät. Arduinolle kulkevan signaalin tulee olla 0-5v kantti-muotoista aaltoa (kuvassa alla)
Nämä anturit ovat Speeduino järjestelmän toiminnan kannalta ne kaikista tärkeimmät. Arduinolle kulkevan signaalin tulee olla 0-5v kantti-muotoista aaltoa (kuvassa alla), jonka tulee vastata hammaspyörän kuviota, joka pyörii kampi- tai nokka-akselin pyörintänopeudella.
This is arguably the most important sensor for Speeduino to function correctly. The signal going to the Arduino must be a 0v-5v square wave series of pulses (shown below) representing teeth on a wheel running at crank (or cam) speed. Many Hall and 'opto' sensors meet this digital square-wave spec. If only a crankshaft trigger wheel is used (no cam signal), the crank wheel must have a 'missing' tooth in order to provide position information as well as the engine RPM. Tested missing-tooth wheels currently are 4-1, 12-1, 36-1 and 60-2.
Many Hall and 'opto' sensors meet this digital square-wave spec. If only a crankshaft trigger wheel is used (no cam signal), the crank wheel must have a 'missing' tooth in order to provide position information as well as the engine RPM. Tested missing-tooth wheels currently are 4-1, 12-1, 36-1 and 60-2.
For all timing signal parsing options see the [Trigger Patterns and Decoders](/decoders) page.