diff --git a/electropepper_kicad.bak b/electropepper_kicad.bak
index a02aa09..b34db19 100644
--- a/electropepper_kicad.bak
+++ b/electropepper_kicad.bak
@@ -19,6 +19,34 @@ X VO2 6 450 -125 200 L 50 50 1 1 B
 ENDDRAW
 ENDDEF
 #
+# DS3231MZ+
+#
+DEF DS3231MZ+ U 0 40 Y Y 1 F N
+F0 "U" -300 450 50 H V L BNN
+F1 "DS3231MZ+" -50 -400 50 H V L BNN
+F2 "SOIC8_150MIL" 0 -300 50 H I L BNN
+F3 "Maxim Integrated" 0 -300 50 H I L BNN
+F4 "DS3231MZ+" 0 -300 50 H I L BNN
+F5 "5.10 USD" 0 -300 50 H I L BNN
+F6 "Good" 0 -300 50 H I L BNN
+F7 "SOIC-8 Maxim Integrated" 0 -300 50 H I L BNN
+F8 "Real Time Clock Serial-I2C +/-5ppm SOIC8" 0 -300 50 H I L BNN
+$FPLIST
+ SOIC-8
+$ENDFPLIST
+DRAW
+S -300 400 300 -300 0 0 0 f
+X 32KHZ 1 450 300 150 L 40 40 0 0 O
+X VCC 2 -450 300 150 R 40 40 0 0 W
+X ~INT/SQW 3 450 100 150 L 40 40 0 0 O
+X ~RST 4 -450 -100 150 R 40 40 0 0 B
+X GND 5 -450 -200 150 R 40 40 0 0 P
+X VBAT 6 -450 200 150 R 40 40 0 0 W
+X SDA 7 450 200 150 L 40 40 0 0 B
+X SCL 8 -450 0 150 R 40 40 0 0 I
+ENDDRAW
+ENDDEF
+#
 # HM-11
 #
 DEF HM-11 U 0 40 Y Y 1 F N
@@ -159,7 +187,7 @@ $FPLIST
  SOIC-20
 $ENDFPLIST
 DRAW
-T 0 40 110 20 0 0 0 "g/~g" Normal 0 C C
+T 0 40 110 20 0 0 0 "g|~g" Normal 0 C C
 C 110 -30 10 0 1 0 N
 S -200 150 200 -150 0 1 0 f
 P 2 0 1 0 0 0 -100 0 N
diff --git a/electropepper_kicad.bck b/electropepper_kicad.bck
index afeb932..951a89e 100644
--- a/electropepper_kicad.bck
+++ b/electropepper_kicad.bck
@@ -1,5 +1,10 @@
 EESchema-DOCLIB  Version 2.0
 #
+$CMP DS3231MZ+
+D DS3231MZ I2C real-time clock (RTC)
+K RTC, real-time clock
+$ENDCMP
+#
 $CMP LCD16X2-4Bit
 D WC1602A0-SFYLYNC06
 K Generic LCD 16x2 Alphanumeric 16pin Green Backlight
diff --git a/electropepper_kicad.dcm b/electropepper_kicad.dcm
index afeb932..951a89e 100644
--- a/electropepper_kicad.dcm
+++ b/electropepper_kicad.dcm
@@ -1,5 +1,10 @@
 EESchema-DOCLIB  Version 2.0
 #
+$CMP DS3231MZ+
+D DS3231MZ I2C real-time clock (RTC)
+K RTC, real-time clock
+$ENDCMP
+#
 $CMP LCD16X2-4Bit
 D WC1602A0-SFYLYNC06
 K Generic LCD 16x2 Alphanumeric 16pin Green Backlight
diff --git a/electropepper_kicad.lib b/electropepper_kicad.lib
index 5476eb4..225f45f 100644
--- a/electropepper_kicad.lib
+++ b/electropepper_kicad.lib
@@ -19,6 +19,34 @@ X VO2 6 450 -125 200 L 50 50 1 1 B
 ENDDRAW
 ENDDEF
 #
+# DS3231MZ+
+#
+DEF DS3231MZ+ U 0 40 Y Y 1 F N
+F0 "U" -300 450 50 H V L BNN
+F1 "DS3231MZ+" -50 -400 50 H V L BNN
+F2 "SOIC8_150MIL" 0 -300 50 H I L BNN
+F3 "Maxim Integrated" 0 -300 50 H I L BNN
+F4 "DS3231MZ+" 0 -300 50 H I L BNN
+F5 "5.10 USD" 0 -300 50 H I L BNN
+F6 "Good" 0 -300 50 H I L BNN
+F7 "SOIC-8 Maxim Integrated" 0 -300 50 H I L BNN
+F8 "Real Time Clock Serial-I2C +/-5ppm SOIC8" 0 -300 50 H I L BNN
+$FPLIST
+ SOIC-8
+$ENDFPLIST
+DRAW
+S -300 400 300 -300 0 0 0 f
+X 32KHZ 1 450 300 150 L 40 40 0 0 O
+X VCC 2 -450 300 150 R 40 40 0 0 W
+X ~INT/SQW 3 450 100 150 L 40 40 0 0 O
+X ~RST 4 -450 -100 150 R 40 40 0 0 B
+X GND 5 -450 -200 150 R 40 40 0 0 P
+X VBAT 6 -450 200 150 R 40 40 0 0 W
+X SDA 7 450 200 150 L 40 40 0 0 B
+X SCL 8 -450 0 150 R 40 40 0 0 I
+ENDDRAW
+ENDDEF
+#
 # HM-11
 #
 DEF HM-11 U 0 40 Y Y 1 F N
@@ -223,7 +251,7 @@ $FPLIST
  USB*
 $ENDFPLIST
 DRAW
-S -250 -150 250 150 0 1 0 N
+S -250 -150 250 150 0 1 0 f
 S -205 -150 -195 -120 0 1 0 N
 S -105 -150 -95 -120 0 1 0 N
 S -5 -150 5 -120 0 1 0 N