diff --git a/ChangeLog.md b/ChangeLog.md
index a59a506cc..6ec3be6c8 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -18,13 +18,14 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ### Added
 
+- Added support for Yosemitech Y513 Blue Green Algae Sensor thanks to @aufdenkampe
+
 ### Removed
 
 ### Fixed
 
 ***
 
-
 ## [0.35.1]
 
 ### Changed
@@ -39,7 +40,6 @@ Fixed clock configuration for SAMD21
 
 ***
 
-
 ## [0.35.0]
 
 ### Changed
diff --git a/README.md b/README.md
index da9a9c120..fe4d07d3a 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,7 @@ For some generalized information about attaching sensors to an Arduino style boa
   - [Y502-A or Y504-A: Optical DO and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y504.html)
   - [Y510-B: Optical Turbidity and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y510.html)
   - [Y511-A: Optical Turbidity and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y511.html)
+  - [Y513-A: Self-Cleaning Blue-Green Algae Sensor](https://envirodiy.github.io/ModularSensors/group__sensor__y513.html)
   - [Y514-A: Optical Chlorophyll and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y514.html)
   - [Y520-A: Conductivity and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y520.html)
   - [Y532-A: Digital pH and Temperature](https://envirodiy.github.io/ModularSensors/group__sensor__y532.html)
diff --git a/examples/menu_a_la_carte/ReadMe.md b/examples/menu_a_la_carte/ReadMe.md
index b8e1cb3fd..e104351e8 100644
--- a/examples/menu_a_la_carte/ReadMe.md
+++ b/examples/menu_a_la_carte/ReadMe.md
@@ -103,6 +103,7 @@ ___
       - [Yosemitech Y504 Dissolved Oxygen Sensor](#yosemitech-y504-dissolved-oxygen-sensor)
       - [Yosemitech Y510 Turbidity Sensor](#yosemitech-y510-turbidity-sensor)
       - [Yosemitech Y511 Turbidity Sensor with Wiper](#yosemitech-y511-turbidity-sensor-with-wiper)
+      - [Yosemitech Y513 Blue-Green Algae Sensor](#yosemitech-y513-blue-green-algae-sensor)
       - [Yosemitech Y514 Chlorophyll Sensor](#yosemitech-y514-chlorophyll-sensor)
       - [Yosemitech Y520 Conductivity Sensor](#yosemitech-y520-conductivity-sensor)
       - [Yosemitech Y532 pH Sensor](#yosemitech-y532-ph-sensor)
@@ -1098,6 +1099,14 @@ ___
 
 ___
 
+#### Yosemitech Y513 Blue-Green Algae Sensor<!-- {#menu_walk_yosemitech_y513} -->
+
+@see @ref sensor_y513
+
+[//]: # ( @menusnip{yosemitech_y513} )
+
+___
+
 #### Yosemitech Y514 Chlorophyll Sensor<!-- {#menu_walk_yosemitech_y514} -->
 
 @see @ref sensor_y514
diff --git a/src/sensors/YosemitechY513.h b/src/sensors/YosemitechY513.h
index b18fe4526..12cbd643b 100644
--- a/src/sensors/YosemitechY513.h
+++ b/src/sensors/YosemitechY513.h
@@ -56,11 +56,17 @@
 /** @ingroup sensor_y513 */
 /**@{*/
 
-// Sensor Specific Defines
+/**
+ * @anchor sensor_y513_var_counts
+ * @name Sensor Variable Counts
+ * The number of variables that can be returned by a Yosemitch Y514
+ */
+/**@{*/
 /// @brief Sensor::_numReturnedValues; the Y513 can report 2 values.
 #define Y513_NUM_VARIABLES 2
 /// @brief Sensor::_incCalcValues; we don't calculate any additional values.
 #define Y513_INC_CALC_VARIABLES 0
+/**@}*/
 
 /**
  * @anchor sensor_y513_timing