Show status with led. Minor reliability improvements.

README.md

@@ -35,3 +35,7 @@ NOTE: SPEKTRUM SATELLITE RECEIVERS ARE 3.3V DEVICES! Application of more than 3.
 The following schematic details the circuit used for this binding process. The GPIO pins in the diagram do not match the pin assignments in the code!
 
 ![BindCircuit](https://user-images.githubusercontent.com/104041016/182746055-f7c7d6db-a366-4edc-8f20-23109ccb1560.png)
+
+Alternative circuit setup, with no BEC, using onboard 3.3V line from the Raspberry Pi Pico and a simple switch. Pinout can be seen in the photo, only hidden component is a 1.2K pulldown resistor on pin 9 the other side of the PCB.
+
+![PhotoCircuit](images/PhotoCircuit.jpg)

SpektrumBind.ino

@@ -12,14 +12,16 @@
 
 //Pin Assignments
 static const uint8_t receiverVcc = 0;
-static const uint8_t switchSignal = 15;
+static const uint8_t switchSignal = 9;
 static const uint8_t receiverSignal = 10;
 static const uint8_t numBindPulses = 9;  //Use Universal
 
 
 void setup() {
   // put your setup code here, to run once:
 
+  pinMode(LED_BUILTIN, OUTPUT);
+
   pinMode(switchSignal, INPUT);   //Switch imput to read when reciever is powered on. Use External 10K Pulldown Resistor
 
   pinMode(receiverVcc, OUTPUT);   //Reciever Power
@@ -30,26 +32,36 @@ void setup() {
   digitalWrite(receiverVcc, HIGH);    //Power On
   digitalWrite(receiverSignal, HIGH);   //Allows for falling pulses
 
-  delay(5000);
+  delay(500);
 
 }
 
 void loop() {
+  digitalWrite(receiverSignal, LOW);
+  digitalWrite(LED_BUILTIN, HIGH);
   // Use a physical switch to power on reciever and begin pulses immediately
+  while(!digitalRead(switchSignal)){
+    delay(10);
+  }
+  Serial.println("High");
+  digitalWrite(receiverSignal, HIGH);
+  digitalWrite(LED_BUILTIN, LOW);
+  delay(100);   //Ensure reciever powered on before delivering pulses
+
+  for(uint8_t pulseCount = 0; pulseCount < numBindPulses; pulseCount++){      //Deliver Falling Pulses
+  digitalWrite(receiverSignal, LOW);
+  delayMicroseconds(120);
+  digitalWrite(receiverSignal, HIGH);
+  delayMicroseconds(120);
+  }
 
-  if (digitalRead(switchSignal)){
-    Serial.println("High");
-    delay(100);   //Ensure reciever powered on before delivering pulses
-
-    for(uint8_t pulseCount = 0; pulseCount < numBindPulses; pulseCount++){      //Deliver Falling Pulses
-    digitalWrite(receiverSignal, LOW);
-    delayMicroseconds(120);
-    digitalWrite(receiverSignal, HIGH);
-    delayMicroseconds(120);
-    }
-
-    Serial.println("Pulses Sent");
-    delay(15000); //Power on transmitter in bind mode within this delay period
+  Serial.println("Pulses Sent");
+  while(digitalRead(switchSignal)){
+    //Power on transmitter in bind mode within this delay period
+      digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+      delay(500);
+      digitalWrite(LED_BUILTIN, LOW);
+      delay(500);
   }
 
 }