Hello all!
Currently working on two sketches that when a button is tapped (not pressed and held) that get transmitted wirelessly via nRF24L01 to a receiver with a servo attached that on first button tap moves 90 degrees clockwise (and lights two leds) then on second button tap moves 90 degrees counter/anticlockwise back to it's original position.
As currently written, I'm able to transmit/receive that a button was pressed but the servo doesn't move aside from an initial 90 degree movement at power on and a 90 degree jerk counterclockwise on the first button tap. On subsequent button taps I can see that the angle is increasing by only 1 on each tap in the serial view, but the servo doesn't move. The code is based off a sketch I did previously that worked well enough, but the button was wired into main circuit with the servo.
Code for the Transmitter and Receiver are below, and the Original Wired Sketch along with the circuit diagrams are attached. As of now the Transmitter is running on a Nano and the Receiver is on an Uno, eventually it'll both be nanos. Appreciate any and all help!
Transmitter (w/ Button)
// Pin Connections:
// nRF24L01 Pins:
// CE - 7
// MISO - 12
// MOSI - 11
// SCK - 13
// CS - 8
// Other:
// Button - 3
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CS
const byte address[6] = "00001"; //Byte of array representing the address. This is the address where we will send the data. This should be same on the receiving side.
#define pushButtonPin 3 // Digital IO pin connected to the button.
boolean buttonPushed = 0; // Sets this to True/False (intialize at False). Can be transmitted.
void setup() {
Serial.begin(9600); //Sets Up Serial View, must be on 9600 baud, Serial View reads out actions
Serial.println("Fem Mando Wireless Rangefinder Transmitter"); //Titles Serial View
pinMode(pushButtonPin, INPUT_PULLUP);
radio.begin(); //Starting the Wireless communication
radio.setChannel(115); //115 Band above WiFi signals
radio.openWritingPipe(address); //Setting the address where we will send the data**???**
radio.setPALevel(RF24_PA_MIN); //You can set it as minimum or maximum depending on the distance between the transmitter and receiver.
radio.setDataRate(RF24_250KBPS); //Data Transfer Speed
radio.stopListening(); //This sets the module as transmitter
Serial.println("Transmitter Setup Initialized");
}
void loop() { //Transmit pushButtonPin state needed (Low) via buttonpushed. In receiver coder, replace if(digiread(pushbuttonpin)==low with if buttonpushed=low then rename GO buttonpushed variable to something else and go with 1/0
buttonPushed = digitalRead(pushButtonPin);
if(buttonPushed == LOW) {
const char text[] = "Button Pushed LOW";
radio.write(&text, sizeof(text)); //Sending the message to receiver
radio.write(&buttonPushed, sizeof(buttonPushed)); //Sending the message to receiver
delay(1000);
Serial.println("Command Sent");
}
}
Receiver (w/ Servo)
// Pin Connections:
// nRF24L01 Pins:
// CE - 7
// MISO - 12
// MOSI - 11
// SCK - 13
// CS - 8
// Other:
// Servo - 6
// NeoPixels - 5
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Servo.h> // Adds Servo Library
#include <Adafruit_NeoPixel.h> // Adds Neopixel library
RF24 radio(7, 8); // CE, CS
const byte address[6] = "00001";
Servo myservo; // create servo object to control a servo
#define servoPin 6
boolean buttonPushed = 0; //Acting as "pushButtonPin" in OG Wired code
// defines neopixel LEDs
#define PIXEL_PIN 5 // Digital IO pin connected to the NeoPixels.
#define PIXEL_COUNT 2 // number of neopixel (change this accordingly)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ800); // Anytime "strip" is used is referring to the LEDs
int angle =0; //intial Servo position, 90 degrees = vertical
int angleStep =1; //Incremental speed, Smaller Number, slower speed
const int minAngle = 0; //Defines Min/Max angles, Min must be < Max
const int maxAngle = 90; //"int" = integer
int stalkMoved =0; //Acting as "buttonPushed" in OG Wired code
void setup() {
pinMode(6, INPUT_PULLUP);
Serial.begin(9600);
Serial.println("Fem Mando Wireless Rangefinder Helmet Receiver"); //Titles Serial View
radio.begin(); //Starting the Wireless communication
radio.setChannel(115); //115 Band above WiFi signals
radio.openReadingPipe(0, address); //Setting the address at which we will receive the data
radio.setPALevel(RF24_PA_MIN); //You can set this as minimum or maximum depending on the distance between the transmitter and receiver.
radio.setDataRate(RF24_250KBPS); //Data Transfer Speed
radio.startListening(); //This sets the module as receiver
myservo.attach(servoPin); // Attaches the servo object (myservo) to the ~6 Data Pin on arduino
strip.begin(); //initiates LEDs
strip.show();
Serial.println("Receiver Setup Initialized");
}
void loop() {
if (radio.available()) { //Looking for the data.
char text[32] = ""; //Saving the incoming data
radio.read(&text, sizeof(text)); //Reading the data
radio.read(&buttonPushed, sizeof(buttonPushed)); //Reading the data
if(buttonPushed == LOW) {
stalkMoved = 1;
if(stalkMoved ==1){ // If the button is pushed, the following code chunk happens
// Initial loop move:
angle = angle + angleStep; //Determines movement
// Reverse directon of the servo on button press
if (angle <= minAngle || angle >= maxAngle){ // If servo angle is less than or equal to the minimal angle (line20) or "||" greater than or equal to max angle (line21), reverse Servo
angleStep = -angleStep;
stalkMoved = 0;
}
myservo.write(angle); // Moves servo to angle; THIS IS WHERE THE MOVE HAPPENS!
Serial.print("Moved to: "); // Writes to the serial
Serial.print(angle); // Writes angle value
Serial.println(" degree"); //Writes "degree" after angle value
delay(10); // Waits for servo to move between degrees (in milliseconds)
if (angle == 90 || angle == 0) {
Serial.println("Movement Complete"); // Mostly a test to see actions post delay
}
if (angle == 90) { // LED Code
strip.setPixelColor(0, 236, 252 ,3); // Sets first pixel (0) to Neon Yellow "Pixel number, R, G, B")
strip.show();
strip.setPixelColor(1, 232, 232, 232); // Sets second pixel (1) to White)
strip.show();
}
else {
strip.setPixelColor(0, 0, 0, 0);
strip.show();
strip.setPixelColor(1, 0, 0, 0);
}
}
//digitalWrite(6, HIGH);
//Serial.println(text);
}
} // Ends Movement loop
} // Returns void loop to start
A few notes:
- The circuit diagrams show two on/off switches from the power supply. It was the only 4AA holder I could find. IRL it just has one on/off
- The nRF24L01's both have 5v breakouts on them
OriginalWiredCode.txt (3.48 KB)