From 2bbf672094486e8e752b16089946291e3d18a108 Mon Sep 17 00:00:00 2001 From: pascallanger Date: Wed, 25 Jan 2017 15:50:07 +0100 Subject: [PATCH] Update Troubleshooting.md --- docs/Troubleshooting.md | 1 + 1 file changed, 1 insertion(+) diff --git a/docs/Troubleshooting.md b/docs/Troubleshooting.md index 799ece6..ce42fde 100644 --- a/docs/Troubleshooting.md +++ b/docs/Troubleshooting.md @@ -18,6 +18,7 @@ - The protocol/mode selection must be done before the power is applied to the module - Often the signal is not sent to the module until the transmitter has performed safety checks (like switch and throttle position settings) - Check that at least one of the protocol selection pins is connected to GND. +- Some radios have an open collector output (Futaba, Graupner...), in this case add a 4.7K resistor between PPM and BATT. ###Input Mode - Serial - Make sure you have done the serial mods as indicated in the [hardware page for your board] (Hardware.md).