diff --git a/model/standard-module-definitions/src/main/resources/zscript-datamodel/00xx-base-modules/004x-pins.yaml b/model/standard-module-definitions/src/main/resources/zscript-datamodel/00xx-base-modules/004x-pins.yaml
index 80c75eab3..864970b16 100644
--- a/model/standard-module-definitions/src/main/resources/zscript-datamodel/00xx-base-modules/004x-pins.yaml
+++ b/model/standard-module-definitions/src/main/resources/zscript-datamodel/00xx-base-modules/004x-pins.yaml
@@ -34,7 +34,7 @@ commands:
                 description: whether the device supports AtoDs on the pins
             -   name: DtoA
                 description: whether the device supports DtoAs on the pins
-            -   name: PWM
+            -   name: pwm
                 description: whether the device supports PWM on the pins
             -   name: digitalNotification
                 description: whether the device supports notifications for digital pin control
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/PinManager.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/PinManager.hpp
index 66c29f2ab..012202b4e 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/PinManager.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/PinManager.hpp
@@ -209,7 +209,6 @@ template<class ZP>
 class PinManager {
 
 #ifdef ZSCRIPT_PIN_SUPPORT_NOTIFICATIONS
-
     static void pinInterrupt_00() {
         pinInterrupt(0);
     }
@@ -1156,7 +1155,6 @@ class PinManager {
     public:
         AnalogPinNotificationSetup(uint8_t pin) : notifState(false), notif(false), enabled(false), pinNum(pin), maxVal(0xfff),
                                        minVal(0x000), last(0x800) {
-
         }
     };
 
@@ -1209,10 +1207,7 @@ class PinManager {
 #endif
 
 public:
-
 #ifdef ZSCRIPT_PIN_SUPPORT_NOTIFICATIONS
-
-
     static void setOnNotificationDigital(void (*onNotificationDigital)(void)) {
         PinManager<ZP>::onNotificationDigital = onNotificationDigital;
     }
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinReadCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinReadCommand.hpp
index 76543dd10..3a1b8bc8b 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinReadCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinReadCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0035 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0045 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -20,7 +20,6 @@ namespace pins_module {
 template<class ZP>
 class AtoDPinReadCommand: public AnalogRead_CommandDefs {
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
         if (!ctx.getField(ReqPin__P, &pin)) {
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinSetupCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinSetupCommand.hpp
index 96522bf6b..8b857d538 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinSetupCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/AtoDPinSetupCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0034 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0044 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,19 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class AtoDPinSetupCommand: public AToDSetup_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-    static constexpr char ParamEnableNotifications__N = 'N';
-    static constexpr char ParamLowerLimit__L = 'L';
-    static constexpr char ParamUpperLimit__U = 'U';
-
-    static constexpr char RespBitCount__B = 'B';
-    static constexpr char RespSupportsNotifications__N = 'N';
-
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
@@ -42,7 +33,7 @@ class AtoDPinSetupCommand: public AToDSetup_CommandDefs {
 #ifdef ZSCRIPT_PIN_SUPPORT_ANALOG_NOTIFICATIONS
         uint8_t index = PinManager<ZP>::getAnalogIndex(pin);
         uint16_t enableNotifications;
-        if (ctx.getField(ParamEnableNotifications__N, &enableNotifications)) {
+        if (ctx.getField(ReqEnableNotifications__N, &enableNotifications)) {
             if (enableNotifications != 0) {
                 PinManager<ZP>::enableAnalogNotification(index);
             } else {
@@ -50,17 +41,17 @@ class AtoDPinSetupCommand: public AToDSetup_CommandDefs {
             }
         }
         uint16_t notificationLower;
-        if (ctx.getField(ParamLowerLimit__L, &notificationLower)) {
+        if (ctx.getField(ReqLowerLimitNotify__L, &notificationLower)) {
             PinManager<ZP>::setAnalogNotificationLower(index, notificationLower);
         }
         uint16_t notificationUpper;
-        if (ctx.getField(ParamUpperLimit__U, &notificationUpper)) {
+        if (ctx.getField(ReqUpperLimitNotify__U, &notificationUpper)) {
             PinManager<ZP>::setAnalogNotificationUpper(index, notificationUpper);
         }
 #endif
         CommandOutStream<ZP> out = ctx.getOutStream();
 #ifdef ZSCRIPT_PIN_SUPPORT_ANALOG_NOTIFICATIONS
-        out.writeField(RespSupportsNotifications__N, 0);
+        out.writeField(RespSupportedNotifications__N, 0);
 #endif
         if (PIN_SUPPORTS_ANALOG_READ(pin)) {
             out.writeField(RespBitCount__B, 10);
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinReadCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinReadCommand.hpp
index 36adbd0c8..f720ae831 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinReadCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinReadCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0033 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0043 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,15 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class DigitalPinReadCommand: public DigitalRead_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-
-    static constexpr char RespValue__V = 'V';
-
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
@@ -36,7 +31,7 @@ class DigitalPinReadCommand: public DigitalRead_CommandDefs {
             return;
         }
         CommandOutStream<ZP> out = ctx.getOutStream();
-        out.writeField(RespValue__V, digitalRead(pin) == HIGH ? 1 : 0);
+        out.writeField(RespValue__V, digitalRead(pin) == HIGH ? high_value : low_value);
     }
 };
 
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinSetupCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinSetupCommand.hpp
index efb338c88..d2ed5ed4c 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinSetupCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinSetupCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0031 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0041 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinWriteCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinWriteCommand.hpp
index a0638569e..4363ca501 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinWriteCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DigitalPinWriteCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0032 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0042 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,14 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class DigitalPinWriteCommand: public DigitalWrite_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-    static constexpr char ParamValue__V = 'V';
-
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
@@ -35,14 +31,14 @@ class DigitalPinWriteCommand: public DigitalWrite_CommandDefs {
             return;
         }
         uint16_t value;
-        if (!ctx.getField(ParamValue__V, &value)) {
+        if (!ctx.getField(ReqValue__V, &value)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
         if (!PinManager<ZP>::isModeActivated(pin)) {
-            digitalWrite(pin, value ? HIGH : LOW);
+            digitalWrite(pin, value != low_Value ? HIGH : LOW);
         } else {
-            if ((value != 0) == PinManager<ZP>::isCollectorNDrain(pin)) {
+            if ((value != low_Value) == PinManager<ZP>::isCollectorNDrain(pin)) {
                 pinMode(pin, OUTPUT);
             } else {
                 if (PinManager<ZP>::isPullup(pin)) {
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinSetupCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinSetupCommand.hpp
index 6e80d16f1..571e92b9f 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinSetupCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinSetupCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0036 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0046 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,15 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class DtoAPinSetupCommand: public DToASetup_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-
-    static constexpr char RespBitCount__B = 'B';
-
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinWriteCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinWriteCommand.hpp
index 73925fe11..ff7512799 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinWriteCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/DtoAPinWriteCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0037 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0047 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,13 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class DtoAPinWriteCommand: public AnalogWrite_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-    static constexpr char ParamValue__V = 'V';
-
 public:
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
@@ -34,7 +31,7 @@ class DtoAPinWriteCommand: public AnalogWrite_CommandDefs {
             return;
         }
         uint16_t value;
-        if (!ctx.getField(ParamValue__V, &value)) {
+        if (!ctx.getField(ReqValue__V, &value)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PinCapabilitiesCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PinCapabilitiesCommand.hpp
index 834f63ea5..9f408556a 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PinCapabilitiesCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PinCapabilitiesCommand.hpp
@@ -28,7 +28,7 @@ class PinCapabilitiesCommand : public Capabilities_CommandDefs {
                                                     #ifdef DEVICE_SUPPORTS_ANALOG_WRITE
                                                     | RespAvailableControllers_Values::dtoA_field
                                                     #endif
-                                                    | RespAvailableControllers_Values::pWM_field);
+                                                    | RespAvailableControllers_Values::pwm_field);
     }
 };
 
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinSetupCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinSetupCommand.hpp
index d778d95b9..b6fbed4e9 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinSetupCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinSetupCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0038 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0048 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,14 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class PwmPinSetupCommand: public PwmSetup_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-
-    static constexpr char RespBitCount__B = 'B';
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
diff --git a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinWriteCommand.hpp b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinWriteCommand.hpp
index 8c91e26ce..543ecda4a 100644
--- a/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinWriteCommand.hpp
+++ b/receivers/native/arduino/src/main/c++/arduino/pins-module/commands/PwmPinWriteCommand.hpp
@@ -11,7 +11,7 @@
 #include <zscript/modules/ZscriptCommand.hpp>
 #include "../PinManager.hpp"
 
-#define COMMAND_EXISTS_0039 EXISTENCE_MARKER_UTIL
+#define COMMAND_EXISTS_0049 EXISTENCE_MARKER_UTIL
 
 namespace Zscript {
 
@@ -19,14 +19,10 @@ namespace pins_module {
 
 template<class ZP>
 class PwmPinWriteCommand: public PwmWrite_CommandDefs {
-    static constexpr char ParamPin__P = 'P';
-    static constexpr char ParamValue__V = 'V';
-
 public:
-
     static void execute(ZscriptCommandContext<ZP> ctx) {
         uint16_t pin;
-        if (!ctx.getField(ParamPin__P, &pin)) {
+        if (!ctx.getField(ReqPin__P, &pin)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }
@@ -35,7 +31,7 @@ class PwmPinWriteCommand: public PwmWrite_CommandDefs {
             return;
         }
         uint16_t value;
-        if (!ctx.getField(ParamValue__V, &value)) {
+        if (!ctx.getField(ReqValue__V, &value)) {
             ctx.status(ResponseStatus::MISSING_KEY);
             return;
         }