diff --git a/firmware/src/main.c b/firmware/src/main.c
index 037a8f0..fd8062a 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -336,6 +336,20 @@ static void lcd_splash(void) {
 static void twi_error(void) {
     lcd_fill(0xFF);
 
+    for (uint8_t i = 0; i < 2; i++) {
+        lcd_move_cursor(0, i);
+        lcd_write_string_page("TW_STATUS:\0", i, true);
+        lcd_write_kerning(2, true);
+        lcd_write_integer_page(TW_STATUS, 3, i, true);
+    }
+
+    for (uint8_t i = 0; i < 2; i++) {
+        lcd_move_cursor(0, i + 2);
+        lcd_write_string_page("TW_DATA:\0", i, true);
+        lcd_write_kerning(16, true);
+        lcd_write_integer_page(TWDR, 3, i, true);
+    }
+
     for (;;);
 }