diff --git a/examples/scanner/scanner.ino b/examples/scanner/scanner.ino
index 7e2cc580..c8b80093 100644
--- a/examples/scanner/scanner.ino
+++ b/examples/scanner/scanner.ino
@@ -215,22 +215,22 @@ void loop(void) {
 
 void printHeader() {
   // Print the hundreds digits
-  for (int i = 0; i < num_channels; ++i)
+  for (uint8_t i = 0; i < num_channels; ++i)
     Serial.print(i / 100);
   Serial.println();
 
   // Print the tens digits
-  for (int i = 0; i < num_channels; ++i)
+  for (uint8_t i = 0; i < num_channels; ++i)
     Serial.print((i % 100) / 10);
   Serial.println();
 
   // Print the singles digits
-  for (int i = 0; i < num_channels; ++i)
+  for (uint8_t i = 0; i < num_channels; ++i)
     Serial.print(i % 10);
   Serial.println();
 
   // Print the header's divider
-  for (int i = 0; i < num_channels; ++i)
+  for (uint8_t i = 0; i < num_channels; ++i)
     Serial.print(F("~"));
   Serial.println();
 }
\ No newline at end of file
diff --git a/examples_linux/scanner.cpp b/examples_linux/scanner.cpp
index bed003f4..9f5cea15 100644
--- a/examples_linux/scanner.cpp
+++ b/examples_linux/scanner.cpp
@@ -94,7 +94,7 @@ int main(int argc, char** argv)
 
     // print a line that should not be wrapped
     cout << "\n!!! This example requires a width of at least 126 characters. "
-         << "If this text uses multiple lines, then the output will look bad.\n"
+         << "If this text uses multiple lines, then the output will look bad."
          << endl;
 
     // set the data rate
@@ -179,22 +179,22 @@ int main(int argc, char** argv)
 void printHeader()
 {
     // print the hundreds digits
-    for (int i = 0; i < num_channels; ++i)
-        cout << (i / 100);
+    for (uint8_t int i = 0; i < num_channels; ++i)
+        cout << static_cast<int>(i / 100);
     cout << endl;
 
     // print the tens digits
-    for (int i = 0; i < num_channels; ++i)
-        cout << ((i % 100) / 10);
+    for (uint8_t i = 0; i < num_channels; ++i)
+        cout << static_cast<int>((i % 100) / 10);
     cout << endl;
 
     // print the singles digits
-    for (int i = 0; i < num_channels; ++i)
-        cout << (i % 10);
+    for (uint8_t i = 0; i < num_channels; ++i)
+        cout << static_cast<int>(i % 10);
     cout << endl;
 
     // print the header's divider
-    for (int i = 0; i < num_channels; ++i)
+    for (uint8_t i = 0; i < num_channels; ++i)
         cout << '~';
     cout << endl;
 }
diff --git a/examples_pico/scanner.cpp b/examples_pico/scanner.cpp
index 5b723f5b..5d43d4d9 100644
--- a/examples_pico/scanner.cpp
+++ b/examples_pico/scanner.cpp
@@ -183,22 +183,22 @@ void scanChannel(uint8_t channel)
 void printHeader()
 {
     // print the hundreds digits
-    for (int i = 0; i < num_channels; ++i)
+    for (uint8_t i = 0; i < num_channels; ++i)
         printf("%d", (i / 100));
     printf("\n");
 
     // print the tens digits
-    for (int i = 0; i < num_channels; ++i)
+    for (uint8_t i = 0; i < num_channels; ++i)
         printf("%d", ((i % 100) / 10));
     printf("\n");
 
     // print the singles digits
-    for (int i = 0; i < num_channels; ++i)
+    for (uint8_t i = 0; i < num_channels; ++i)
         printf("%d", (i % 10));
     printf("\n");
 
     // print the header's divider
-    for (int i = 0; i < num_channels; ++i)
+    for (uint8_t i = 0; i < num_channels; ++i)
         printf("~");
     printf("\n");
 }