[chronojump] ForceSensor. Fixed offset after uploading firmware

[Xavier Padullés <xpadulles src gnome org>]

commit 15f590e009d4f2eea0f0697ed4a17b42a4f2d62a
Author: Xavier Padullés <x padulles gmail com>
Date:   Fri Nov 15 12:50:57 2019 +0100

    ForceSensor. Fixed offset after uploading firmware

 arduino/ForceSensor/ForceSensor.ino | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/arduino/ForceSensor/ForceSensor.ino b/arduino/ForceSensor/ForceSensor.ino
index d3e268ad..c1785462 100644
--- a/arduino/ForceSensor/ForceSensor.ino
+++ b/arduino/ForceSensor/ForceSensor.ino
@@ -22,7 +22,7 @@
 
 */
 
-#include "HX711.h"
+#include <HX711.h>
 #include <EEPROM.h>
 
 #define DOUT  3
@@ -62,8 +62,8 @@ void setup() {
 
   long tare = 0;
   EEPROM.get(tareAddress, tare);
-  if (isnan(tare)) {
-    scale.set_scale(10000);// Usual value  in Chronojump strength gauge
+  if (tare == -151) {
+    scale.set_offset(10000);// Usual value  in Chronojump strength gauge
     EEPROM.put(tareAddress, 10000);
   } else {
     scale.set_offset(tare);