diff --git a/src/lib/BlueDisplay/BlueDisplay.cpp b/src/lib/BlueDisplay/BlueDisplay.cpp
index d10e908..23e6bd2 100644
--- a/src/lib/BlueDisplay/BlueDisplay.cpp
+++ b/src/lib/BlueDisplay/BlueDisplay.cpp
@@ -1649,7 +1649,7 @@ void BlueDisplay::testDisplay(void) {
 }
 
 #define COLOR_SPECTRUM_SEGMENTS 6 // red->yellow, yellow-> green, green-> cyan, cyan-> blue, blue-> magent, magenta-> red
-#define COLOR_RESOLUTION 32 // 5 bit for 16 bit color (green really has 6 bit, but dont use it)
+#define COLOR_RESOLUTION 32 // 5 bit for 16 bit color (green really has 6 bit, but don't use it)
 const uint16_t colorIncrement[COLOR_SPECTRUM_SEGMENTS] = { 1 << 6, 0x1FU << 11, 1, 0x3FFU << 6, 1 << 11, 0xFFFFU };
 
 /**
diff --git a/src/lib/EncoderMotorControl.h b/src/lib/EncoderMotorControl.h
index 2095061..6c296fb 100644
--- a/src/lib/EncoderMotorControl.h
+++ b/src/lib/EncoderMotorControl.h
@@ -175,7 +175,7 @@ class EncoderMotorControl {
     uint16_t LastRideDistanceCount;
 
     /*
-     * Distance optocoupler impulse counter. is reseted at initGoDistanceCount if motor was stopped.
+     * Distance optocoupler impulse counter. is reset at initGoDistanceCount if motor was stopped.
      */
     volatile uint16_t DistanceCount;
     // used for debouncing and lock/timeout  detection
diff --git a/src/lib/utility/Adafruit_MS_PWMServoDriver.cpp b/src/lib/utility/Adafruit_MS_PWMServoDriver.cpp
index 1763209..1015514 100644
--- a/src/lib/utility/Adafruit_MS_PWMServoDriver.cpp
+++ b/src/lib/utility/Adafruit_MS_PWMServoDriver.cpp
@@ -5,7 +5,7 @@
   ------> http://www.adafruit.com/products/815
 
   These displays use I2C to communicate, 2 pins are required to  
-  interface. For Arduino UNOs, thats SCL -> Analog 5, SDA -> Analog 4
+  interface. For Arduino UNOs, that's SCL -> Analog 5, SDA -> Analog 4
 
   Adafruit invests time and resources providing this open source code, 
   please support Adafruit and open-source hardware by purchasing 
diff --git a/src/lib/utility/Adafruit_MS_PWMServoDriver.h b/src/lib/utility/Adafruit_MS_PWMServoDriver.h
index 359e8e1..0023d69 100644
--- a/src/lib/utility/Adafruit_MS_PWMServoDriver.h
+++ b/src/lib/utility/Adafruit_MS_PWMServoDriver.h
@@ -5,7 +5,7 @@
   ------> http://www.adafruit.com/products/815
 
   These displays use I2C to communicate, 2 pins are required to  
-  interface. For Arduino UNOs, thats SCL -> Analog 5, SDA -> Analog 4
+  interface. For Arduino UNOs, that's SCL -> Analog 5, SDA -> Analog 4
 
   Adafruit invests time and resources providing this open source code, 
   please support Adafruit and open-source hardware by purchasing 
diff --git a/src/lib/utility/twi.c b/src/lib/utility/twi.c
index 7efcc5a..ddb74ac 100644
--- a/src/lib/utility/twi.c
+++ b/src/lib/utility/twi.c
@@ -143,7 +143,7 @@ uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sen
   }
   twi_state = TWI_MRX;
   twi_sendStop = sendStop;
-  // reset error state (0xFF.. no error occured)
+  // reset error state (0xFF.. no error occurred)
   twi_error = 0xFF;
 
   // initialize buffer iteration vars
@@ -222,7 +222,7 @@ uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait
   }
   twi_state = TWI_MTX;
   twi_sendStop = sendStop;
-  // reset error state (0xFF.. no error occured)
+  // reset error state (0xFF.. no error occurred)
   twi_error = 0xFF;
 
   // initialize buffer iteration vars
@@ -247,7 +247,7 @@ uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait
     // We need to remove ourselves from the repeated start state before we enable interrupts,
     // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning
     // up. Also, don't enable the START interrupt. There may be one pending from the 
-    // repeated start that we sent outselves, and that would really confuse things.
+    // repeated start that we sent ourselves, and that would really confuse things.
     twi_inRepStart = false;			// remember, we're dealing with an ASYNC ISR
     do {
       TWDR = twi_slarw;				
@@ -355,7 +355,7 @@ void twi_stop(void)
   // send stop condition
   TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO);
 
-  // wait for stop condition to be exectued on bus
+  // wait for stop condition to be executed on bus
   // TWINT is not set after a stop condition!
   while(TWCR & _BV(TWSTO)){
     continue;