diff --git a/FluidNC/src/Motors/TrinamicUartDriver.cpp b/FluidNC/src/Motors/TrinamicUartDriver.cpp
index 369bb126d..97ac24729 100644
--- a/FluidNC/src/Motors/TrinamicUartDriver.cpp
+++ b/FluidNC/src/Motors/TrinamicUartDriver.cpp
@@ -21,10 +21,7 @@ namespace MotorDrivers {
 
     void TrinamicUartDriver::init() {
         _uart = config->_uarts[_uart_num];
-        if (!_uart) {
-            log_error("TMC Driver missing uart" << _uart_num << " section");
-            return;
-        }
+        Assert(_uart, "TMC Driver missing uart%d section", _uart_num);
 
         _cs_pin.setAttr(Pin::Attr::Output);
     }
diff --git a/FluidNC/src/Pin.cpp b/FluidNC/src/Pin.cpp
index 01c606f6c..5e22afacf 100644
--- a/FluidNC/src/Pin.cpp
+++ b/FluidNC/src/Pin.cpp
@@ -12,7 +12,6 @@
 #include "Pins/I2SOPinDetail.h"
 #include "Pins/ErrorPinDetail.h"
 #include "string_util.h"
-#include <stdio.h>  // snprintf()
 
 Pins::PinDetail* Pin::undefinedPin = new Pins::VoidPinDetail();
 Pins::PinDetail* Pin::errorPin     = new Pins::ErrorPinDetail("unknown");
@@ -113,9 +112,7 @@ Pin Pin::create(std::string_view str) {
         }
     } catch (const AssertionFailed& ex) {  // We shouldn't get here under normal circumstances.
         log_error("ERR: " << str << " - " << ex.what());
-        char buf[255];
-        snprintf(buf, 255, "ERR: %s - %s", str, ex.what());
-        Assert(false, buf);
+        Assert(false, "");
         // return Pin(new Pins::ErrorPinDetail(str.str()));
     }
 }
diff --git a/FluidNC/src/Pins/DebugPinDetail.cpp b/FluidNC/src/Pins/DebugPinDetail.cpp
index 63e72d236..7bac835e6 100644
--- a/FluidNC/src/Pins/DebugPinDetail.cpp
+++ b/FluidNC/src/Pins/DebugPinDetail.cpp
@@ -5,28 +5,15 @@
 
 #include "../UartChannel.h"
 #include <esp32-hal.h>  // millis()
-#include <cstdio>       // vsnprintf
-#include <cstdarg>
 
 namespace Pins {
-    inline void WriteSerial(const char* format, ...) {
-        char    buf[50];
-        va_list arg;
-        va_list copy;
-        va_start(arg, format);
-        va_copy(copy, arg);
-        size_t len = vsnprintf(buf, 50, format, arg);
-        va_end(copy);
-        log_msg_to(Uart0, buf);
-        va_end(arg);
-    }
 
     // I/O:
     void DebugPinDetail::write(int high) {
         if (high != int(_isHigh)) {
             _isHigh = bool(high);
             if (shouldEvent()) {
-                WriteSerial("Write %s < %d", toString(), high);
+                log_msg_to(Uart0, "Write " << toString() << " < " << high);
             }
         }
         _implementation->write(high);
@@ -35,7 +22,7 @@ namespace Pins {
     int DebugPinDetail::read() {
         auto result = _implementation->read();
         if (shouldEvent()) {
-            WriteSerial("Read  %s > %d", toString(), result);
+            log_msg_to(Uart0, "Read  " << toString() << " > " << result);
         }
         return result;
     }
@@ -63,10 +50,10 @@ namespace Pins {
         if (value.has(PinAttributes::InitialOn)) {
             buf[n++] = '+';
         }
-        buf[n++] = 0;
+        buf[n++] = '\0';
 
         if (shouldEvent()) {
-            WriteSerial("Set pin attr %s = %s", toString(), buf);
+            log_msg_to(Uart0, "Set pin attr " << toString() << " = " << buf);
         }
         _implementation->setAttr(value);
     }
@@ -76,7 +63,7 @@ namespace Pins {
     void DebugPinDetail::CallbackHandler::handle(void* arg) {
         auto handler = static_cast<CallbackHandler*>(arg);
         if (handler->_myPin->shouldEvent()) {
-            WriteSerial("Received ISR on %s", handler->_myPin->toString());
+            log_msg_to(Uart0, "Received ISR on " << handler->_myPin->toString());
         }
         handler->callback(handler->argument);
     }
@@ -88,7 +75,7 @@ namespace Pins {
         _isrHandler.callback = callback;
 
         if (shouldEvent()) {
-            WriteSerial("Attaching interrupt to pin %s, mode %d", toString(), mode);
+            log_msg_to(Uart0, "Attaching interrupt to pin " << toString() << ", mode " << mode);
         }
         _implementation->attachInterrupt(_isrHandler.handle, &_isrHandler, mode);
     }
@@ -109,7 +96,7 @@ namespace Pins {
         } else if (_eventCount == 10) {
             _lastEvent = time;
             ++_eventCount;
-            WriteSerial("Suppressing events...");
+            log_msg_to(Uart0, "Suppressing events...");
             return false;
         } else {
             _lastEvent = time;