diff --git a/ESP32/console_esp32.cpp b/ESP32/console_esp32.cpp
index 5924311..efb9858 100644
--- a/ESP32/console_esp32.cpp
+++ b/ESP32/console_esp32.cpp
@@ -37,7 +37,7 @@ int console_esp32::wait_for_char_ll(const short timeout)
 
 void console_esp32::put_char_ll(const char c)
 {
-	for(auto & port : io_ports)
+	for(auto port : io_ports)
 		port->print(c);
 }
 
diff --git a/ESP32/main.ino b/ESP32/main.ino
index 0b283b4..50fb914 100644
--- a/ESP32/main.ino
+++ b/ESP32/main.ino
@@ -2,6 +2,7 @@
 // Released under Apache License v2.0
 #include <Arduino.h>
 #include <atomic>
+#include <HardwareSerial.h>
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
@@ -41,6 +42,8 @@ std::atomic_bool    *running         { nullptr };
 
 bool                 trace_output    { false };
 
+HardwareSerial       Serial_RS232(2);
+
 // std::atomic_bool on_wifi   { false };
 
 void console_thread_wrapper_panel(void *const c)
@@ -318,7 +321,12 @@ void setup() {
 	b->add_cpu(c);
 
 	Serial.println(F("Init console"));
-	std::vector<Stream *> serial_ports { &Serial, &Serial1 };
+	constexpr uint32_t hwSerialConfig = SERIAL_8N1;
+	Serial_RS232.begin(115200, hwSerialConfig, 16, 17);
+	Serial_RS232.setHwFlowCtrlMode(0);
+	Serial_RS232.println(F("Console enabled on TTY"));
+
+	std::vector<Stream *> serial_ports { &Serial_RS232, &Serial };
 	cnsl = new console_esp32(&stop_event, b, serial_ports);
 
 	Serial.println(F("Start line-frequency interrupt"));
diff --git a/README.md b/README.md
index d256afd..492efe3 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,10 @@ Wiring of SDCARD (or use disk-images exported via NBD over wifi using nbdkit (be
 * SS  : 5
 * and of course connect VCC/GND of the SD-card
 
+Wiring of the MAX232 connection:
+* TX  : 22
+* RX  : 21
+
 
 Released under Apache License v2.0