From c50677881fc137183c13fedd91b4b7d960b27f2d Mon Sep 17 00:00:00 2001
From: bsongis <bsongis@gmail.com>
Date: Sun, 4 Jan 2015 17:12:44 +0100
Subject: [PATCH] Fixes #1961

---
 radio/src/mixer.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/radio/src/mixer.cpp b/radio/src/mixer.cpp
index 32c93a162..996a2f88d 100644
--- a/radio/src/mixer.cpp
+++ b/radio/src/mixer.cpp
@@ -526,8 +526,14 @@ void evalInputs(uint8_t mode)
           vStud *= td->studWeight;
           vStud /= 50;
           switch (td->mode) {
-            case 1: v += vStud;   break; // add-mode
-            case 2: v  = vStud;   break; // subst-mode
+            case 1:
+              // add-mode
+              v = limit<int16_t>(-RESX, v+vStud, RESX);
+              break;
+            case 2:
+              // subst-mode
+              v = vStud;
+              break;
           }
 #if defined(PCBTARANIS)
           calibratedStick[ch] = v;