Both components are working properly.

app/lib/arduino/index.js

@@ -93,7 +93,7 @@ class Arduino {
      **/
     async sendAsync(device, cmd) {
         return new Promise((resolve, reject) => {
-            console.log(`${device} -> ${cmd}`);
+            //this.log.info(`${device} -> ${cmd}`)
             this.queue[cmd] = (ms) => {
                 return resolve(ms);
             };
@@ -163,7 +163,7 @@ class Arduino {
                     }
                 }.bind(this), 1000);
             }
-            console.log(`${device} -> ${cmd}`);
+            //this.log.info(`${device} -> ${cmd}`)
             return this.serial[device].write(cmd, (err, results) => {
                 if (err) {
                     //this.log.error(err)

ino/mcopy_cam_canon_ble/mcopy_cam_canon_ble.ino

@@ -18,7 +18,8 @@
 #include <Arduino.h>
 
 #define RXD2 16
-#define TXD2 -1
+#define TXD2 17
+#define LED_BUILTIN 2
 
 #define LOG_LOCAL_LEVEL ESP_LOG_INFO
 #include "esp_log.h"
@@ -26,20 +27,21 @@
 
 const String name_remote = "mcopy";
 CanonBLERemote canon_ble(name_remote);
-HardwareSerial Serial2(1);
 
 volatile boolean connected = false;
 volatile boolean bleInit = false;
+volatile boolean blinkState = false;
 
 volatile long now;
 volatile long last = -1;
+volatile long blinkLast = 0;
 
 volatile char cmdChar = 'z';
 
 void setup () {
     esp_log_level_set("*", ESP_LOG_NONE);
-    delay(500);
-    Serial2.begin(57600, SERIAL_8N1, RXD2, TXD2);
+    Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2);
+    pinMode(LED_BUILTIN, OUTPUT);
 }
 
 void connectBLE () {
@@ -63,21 +65,22 @@ void loop () {
         camera();
     }
 
-    if (!bleInit && !connected && cmdChar == 'i') {
+    if (!bleInit && !connected) {
         canon_ble.init();
         bleInit = true;
-        Serial2.println('i');
     }
 
-    if (!connected && cmdChar == 'C') {
+    if (bleInit && !connected && cmdChar == 'C') {
         connectBLE();
     }
 
     if (connected && !canon_ble.isConnected()) {
         connected = false;
-        Serial2.println('d');
+        Serial2.print('d');
     }
 
+    blink();
+
     cmdChar = 'z';
 }
 
@@ -86,9 +89,23 @@ void camera () {
     long end;
 
     if (!canon_ble.trigger()) {
-        Serial2.println('E');
+        Serial2.print('E');
     }
-    Serial2.println('c');
+    Serial2.print('c');
 
     end = millis();
 }
+
+void blink () {
+    if (!connected && bleInit) {
+        if (now >= blinkLast + 200) {
+            if (blinkState) {
+                digitalWrite(LED_BUILTIN, HIGH);
+            } else {
+                digitalWrite(LED_BUILTIN, LOW);
+            }
+            blinkState = !blinkState;
+            blinkLast = now;
+        } 
+    }
+}

ino/mcopy_cam_canon_ble_nano/mcopy_cam_canon_ble_nano.ino

@@ -24,9 +24,8 @@
 #define SOFTWARE_TX     11
 
 McopySerial mc;
-SoftwareSerial softPort(SOFTWARE_RX, SOFTWARE_TX);
+SoftwareSerial SoftSerial(SOFTWARE_RX, SOFTWARE_TX);
 
-volatile boolean attached = false;
 volatile boolean connected = false;
 volatile boolean bleInit = false;
 
@@ -43,11 +42,13 @@ volatile long end;
 volatile char cmdChar = 'z';
 volatile char sChar = 'z';
 
+volatile bool connectedOnce = false;
+
 
 void setup () {
     pins();
     mc.begin(mc.CAMERA_IDENTIFIER);
-    softPort.begin(57600);
+    SoftSerial.begin(9600);
 
     digitalWrite(RED_LED, HIGH);
     digitalWrite(GREEN_LED, HIGH);
@@ -73,8 +74,8 @@ void loop () {
     now = millis();
     cmdChar = mc.loop();
 
-    if (softPort.available() > 0) {
-        sChar = softPort.read();
+    if (SoftSerial.available() > 0) {
+        sChar = SoftSerial.read();
     }
 
     s_cmd(sChar);
@@ -85,13 +86,10 @@ void loop () {
         camera();
     }
 
-    if (!bleInit && mc.connected && mc.identified) {
-        softPort.println('i');
-    }
-
-    if (bleInit && !connected && mc.connected && mc.identified) {
+    if (!connected && mc.connected && mc.identified && !connectedOnce) {
         mc.log("Connecting BLE...");
-        softPort.println('C');
+        SoftSerial.print('C');
+        connectedOnce = true;
     }
 
     blink();
@@ -107,19 +105,18 @@ void cmd (char val) {
     } else if (val == mc.STATE) {
         state();
     }
+    cmdChar = 'z';
 }
 
 void s_cmd (char val) {
-    if (val == 'a') {
-        attached = true;
-    } else if (val == 'i') {
-        bleInit = true;
-    } else if (val == 'C') {
+    if (val == 'C') {
         connected = true;
-        digitalWrite(RED_LED, LOW);
-        digitalWrite(GREEN_LED, HIGH);
+        digitalWrite(RED_LED, HIGH);
+        digitalWrite(GREEN_LED, LOW);
     } else if (val == 'd') {
         connected = false;
+        digitalWrite(RED_LED, LOW);
+        digitalWrite(GREEN_LED, LOW);
     } else if (val == 'c') {
         camera_end();
     }
@@ -129,16 +126,16 @@ void s_cmd (char val) {
 void camera () {
     start = now;
     digitalWrite(GREEN_LED, HIGH);
-    digitalWrite(RED_LED, HIGH);
+    digitalWrite(RED_LED, LOW);
     mc.log("Shutter pressed");
-    softPort.println('c');
+    SoftSerial.print('c');
 }
 
 void camera_end () {
     end = millis();
     delay(cameraFrame - (end - start));
-    digitalWrite(GREEN_LED, HIGH);
-    digitalWrite(RED_LED, LOW);
+    digitalWrite(GREEN_LED, LOW);
+    digitalWrite(RED_LED, HIGH);
     last = millis();
     mc.confirm(mc.CAMERA);
     mc.log("camera()");