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docs: update Hardware_requirements

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Karl B 2020-04-24 17:23:21 +00:00 committed by Josh Stewart
parent 8f2e718aba
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Hardware_requirements.md
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@ -2,8 +2,8 @@
title: Hardware Requirements
description:
published: true
date: 2020-01-14T07:31:48.212Z
tags: wiring, hardware
date: 2020-04-24T17:23:17.530Z
tags: hardware, wiring
---
# Hardware Requirements overview
@ -158,6 +158,8 @@ Speeduino injector drivers use on/off (not PWM) control and are designed to work
Speeduino can drive up to 2 High-Z injectors per output channel.
The 0.4v boards have 2 pins per injector channel allowing each injector to be directly connected to the board without splicing in the harness. If the application has less than 4 injectors using any pin connected to the proper channel will work.
### Coils
Current versions of the Speeduino use low-power output signals, designed to work with external small-signal ignition coil drivers, whether a separate type (module or ICM, igniter, IGBT, etc.), or built into the coil assembly ('smart' coils). This method permits Speeduino to have great flexibility to control most types of ignition systems. Attaching the Speeduino outputs directly to a traditional high current passive ("dumb" or 2-pin) ignition coil without an ignition coil driver WILL cause damage to your Arduino.