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docs: update speeduino_jarjestelman_komponentit

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Mikael (kemes) 2020-11-13 12:30:21 +00:00 committed by Josh Stewart
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title: Speeduino-järjestelmän komponentit
description:
published: true
date: 2020-11-13T12:25:14.903Z
date: 2020-11-13T12:30:14.113Z
tags: elektroniikan komponentit
editor: markdown
dateCreated: 2020-11-13T12:11:48.259Z
@ -21,7 +21,7 @@ Sisääntulot
### Kampia- ja nokka-akselin anturit
Nämä anturit ovat Speeduino järjestelmän toiminnan kannalta ne kaikista tärkeimmät. Arduinolle kulkevan signaalin tulee olla
Nämä anturit ovat Speeduino järjestelmän toiminnan kannalta ne kaikista tärkeimmät. Arduinolle kulkevan signaalin tulee olla 0-5v kantti-muotoista aaltoa (kuvassa alla)
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.