diagram-
So this is the video of the DIY rf remote I'm trying to make I'm using the same code and same components but as you can see in the diagram the 2 pot's are not in use and not printed on the display can i use ESP32 instade of Arduino nano because ESP32 has more pin's and what changes i need to do in the code
Many people here are not willing to go to watch youtube videos (me included).
I suggest you to post the necessary information here and also your code using code tags.
Be aware that Esp32 has 3.3V operating voltage, so all the 5V connections for Nano setup has to be adapted.
as you can see in the top right corner, the two potentiometers are not connected because
there are no analog pins left, so my question is, can we use the esp32 dev module instead of an Arduino nano? and can we power ESP32 by giving the VIN pin +5 volt
Code-
//Logo at remote Start
static const unsigned char PROGMEM my_logo[] =
{
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};
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <EEPROM.h>
#define OLED_RESET 8
Adafruit_SSD1306 display(OLED_RESET);
#define NUMFLAKES 5
#define XPOS 0
#define YPOS 1
#define DELTAY 2
#if (SSD1306_LCDHEIGHT != 64)
#endif
const uint64_t pipeOut = 0xE8E8F0F0E1LL;
RF24 radio(9, 10);
struct MyData {
byte throttle;
byte yaw;
byte pitch;
byte roll;
byte AUX1;
byte AUX2;
};
MyData data;
int battery_in = A7;
int buttons_analog_in = A6;
int toggle_1 = 3;
int toggle_2 = 2;
int throttle_in = A0;
int yaw_in = A1;
int pitch_in = A2;
int roll_in = A3;
int mode_in = 4;
int buzzer = 5;
float battery_level = 0;
int throttle_fine = 0;
int yaw_fine = 0;
int pitch_fine = 0;
int roll_fine = 0;
int button_read = 0;
int throttle_to_send = 0;
int yaw_to_send = 0;
int pitch_to_send = 0;
int roll_to_send = 0;
bool throttle_inverted = false;
bool yaw_inverted = true;
bool pitch_inverted = true;
bool roll_inverted = false;
bool yaw_decrease = false;
bool throttle_decrease = false;
bool pitch_decrease = false;
bool roll_decrease = false;
bool yaw_increase = false;
bool throttle_increase = false;
bool pitch_increase = false;
bool roll_increase = false;
bool mode = true;
bool mode_button_pressed = false;
bool sound = true;
int counter = 0;
int invert_counter = 0;
bool sound_changed = false;
void resetData()
{
data.throttle = 127;
data.yaw = 127;
data.pitch = 127;
data.roll = 127;
data.AUX1 = 0;
data.AUX2 = 0;
}
void setup()
{
if( EEPROM.read(1) != 55)
{
EEPROM.write(2, 127);
EEPROM.write(3, 127);
EEPROM.write(4, 127);
EEPROM.write(5, 127);
EEPROM.write(6, 0);
EEPROM.write(7, 1);
EEPROM.write(8, 1);
EEPROM.write(9, 0);
EEPROM.write(1, 55);
}
throttle_fine = EEPROM.read(2);
yaw_fine = EEPROM.read(3);
pitch_fine = EEPROM.read(4);
roll_fine = EEPROM.read(5);
throttle_inverted = EEPROM.read(6);
yaw_inverted = EEPROM.read(7);
pitch_inverted = EEPROM.read(8);
roll_inverted = EEPROM.read(9);
pinMode(buttons_analog_in, INPUT);
pinMode(mode_in, INPUT_PULLUP);
pinMode(buzzer, OUTPUT);
digitalWrite(buzzer,LOW);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
delay(100);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.drawBitmap(0, 0, my_logo, 128, 64, 1);
digitalWrite(buzzer,HIGH);
delay(40);
digitalWrite(buzzer,LOW);
delay(40);
digitalWrite(buzzer,HIGH);
delay(40);
digitalWrite(buzzer,LOW);
display.display();
delay(2000);
radio.begin();
radio.setAutoAck(false);
radio.setPALevel(RF24_PA_HIGH);
radio.setDataRate(RF24_250KBPS);
radio.openWritingPipe(pipeOut);
resetData();
}
int map_normal(int val, int lower, int middle, int upper, bool reverse)
{
val = constrain(val, lower, upper);
if ( val < middle )
val = map(val, lower, middle, 0, 128);
else
val = map(val, middle, upper, 128, 255);
return ( reverse ? 255 - val : val );
}
int map_exponential(int val, bool reverse)
{
val = constrain(val, 0, 1023);
float cube = ((pow((val - 512),3)/520200) + 258.012) / 2;
return ( reverse ? 255 - cube : cube );
}
void loop()
{
battery_level = analogRead(battery_in) * (5.0/1024)*((4700.0 + 10000.0)/10000.0);
button_read = analogRead(buttons_analog_in);
if(button_read > 820)
{
yaw_decrease = false;
throttle_decrease = false;
pitch_decrease = false;
roll_decrease = false;
yaw_increase = false;
throttle_increase = false;
pitch_increase = false;
roll_increase = false;
}
if(button_read < 260 && button_read > 200 && !yaw_decrease)
{
yaw_fine = yaw_fine + 1;
yaw_decrease = true;
EEPROM.write(3, yaw_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 120 && button_read > 50 && !yaw_increase)
{
yaw_fine = yaw_fine - 1;
yaw_increase = true;
EEPROM.write(3, yaw_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 500 && button_read > 430 && !throttle_decrease)
{
throttle_fine = throttle_fine + 1;
throttle_decrease = true;
EEPROM.write(2, throttle_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 380 && button_read > 320 && !throttle_increase)
{
throttle_fine = throttle_fine - 1;
throttle_increase = true;
EEPROM.write(2, throttle_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 610 && button_read > 550 && !pitch_decrease)
{
pitch_fine = pitch_fine + 1;
pitch_decrease = true;
EEPROM.write(4, pitch_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 690 && button_read > 630 && !pitch_increase)
{
pitch_fine = pitch_fine - 1;
pitch_increase = true;
EEPROM.write(4, pitch_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 820 && button_read > 760 && !roll_decrease)
{
roll_fine = roll_fine + 1;
roll_decrease = true;
EEPROM.write(5, roll_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(button_read < 760 && button_read > 700 && !roll_increase)
{
roll_fine = roll_fine - 1;
roll_increase = true;
EEPROM.write(5, roll_fine);
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(!digitalRead(mode_in) && !mode_button_pressed)
{
mode = !mode;
mode_button_pressed = true;
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
if(!digitalRead(mode_in) && !sound_changed)
{
if(counter > 20)
{
sound = !sound;
counter = 0;
sound_changed = true;
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
}
counter = counter + 1;
}
if(button_read < 500 && button_read > 430)
{
if(invert_counter > 30)
{
throttle_inverted = !throttle_inverted;
invert_counter = 0;
EEPROM.write(6, throttle_inverted);
display.clearDisplay();
display.setCursor(13,30);
display.print("Throttle inverted");
display.display();
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
delay(1500);
}
invert_counter = invert_counter + 1;
}
if(button_read < 260 && button_read > 200)
{
if(invert_counter > 30)
{
yaw_inverted = !yaw_inverted;
invert_counter = 0;
EEPROM.write(7, yaw_inverted);
display.clearDisplay();
display.setCursor(15,30);
display.print(" Yaw inverted");
display.display();
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
delay(1500);
}
invert_counter = invert_counter + 1;
}
if(button_read < 610 && button_read > 550)
{
if(invert_counter > 30)
{
pitch_inverted = !pitch_inverted;
invert_counter = 0;
EEPROM.write(8, pitch_inverted);
display.clearDisplay();
display.setCursor(13,30);
display.print(" Pitch inverted");
display.display();
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
delay(1500);
}
invert_counter = invert_counter + 1;
}
if(button_read < 820 && button_read > 760)
{
if(invert_counter > 30)
{
roll_inverted = !roll_inverted;
invert_counter = 0;
EEPROM.write(9, roll_inverted);
display.clearDisplay();
display.setCursor(15,30);
display.print(" Roll inverted");
display.display();
if(sound)
{
digitalWrite(buzzer,HIGH);
delay(50);
digitalWrite(buzzer,LOW);
}
delay(1500);
}
invert_counter = invert_counter + 1;
}
if(digitalRead(mode_in) && mode_button_pressed)
{
mode_button_pressed= false;
sound_changed = false;
counter = 0;
invert_counter = 0;
}
if(!mode)
{
throttle_to_send = map_normal(analogRead(throttle_in), 0, 512, 1023, throttle_inverted);
yaw_to_send = map_normal(analogRead(yaw_in), 0, 512, 1023, yaw_inverted);
pitch_to_send = map_normal(analogRead(pitch_in), 0, 512, 1023, pitch_inverted);
roll_to_send = map_normal(analogRead(roll_in), 0, 512, 1023, roll_inverted);
}
if(mode)
{
throttle_to_send = map_exponential(analogRead(throttle_in), throttle_inverted);
yaw_to_send = map_exponential(analogRead(yaw_in), yaw_inverted);
pitch_to_send = map_exponential(analogRead(pitch_in), pitch_inverted);
roll_to_send = map_exponential(analogRead(roll_in), roll_inverted);
}
throttle_to_send = throttle_to_send + throttle_fine - 127;
yaw_to_send = yaw_to_send + yaw_fine - 127;
pitch_to_send = pitch_to_send + pitch_fine - 127;
roll_to_send = roll_to_send + roll_fine - 127;
data.throttle = constrain(throttle_to_send,0,255);
data.yaw = constrain(yaw_to_send,0,255);
data.pitch = constrain(pitch_to_send,0,255);
data.roll = constrain(roll_to_send,0,255);
data.AUX1 = digitalRead(toggle_1);
data.AUX2 = digitalRead(toggle_2);
radio.write(&data, sizeof(MyData));
display.clearDisplay();
if(sound)
{
display.setCursor(0,0);
display.print("Sound ON");
}
if(!sound)
{
display.setCursor(0,0);
display.print("Sound OFF");
}
display.setCursor(90,0);
display.print(battery_level,1);
display.print("V");
display.setCursor(0,16);
display.print("T: ");
display.print(throttle_to_send);
display.print(" P: ");
display.print(pitch_to_send);
display.setCursor(0,29);
display.print("Y: ");
display.print(yaw_to_send);
display.print(" R: ");
display.print(roll_to_send);
display.setCursor(0,42);
display.print("SW1: ");
display.print(digitalRead(toggle_1));
display.print(" SW2: ");
display.print(digitalRead(toggle_2));
if(mode)
{
display.setCursor(0,56);
display.print("Mode: ");
display.print("Exponential");
}
if(!mode)
{
display.setCursor(0,56);
display.print("Mode: ");
display.print("Linear");
}
display.display();
}
Yes and yes.
But Esp32 is quite different board compared to Nano, and using pins is not as straightforward as it is with nano. Many pins have restrictions, some are just input, some are strapping pins etc. Also library compatibility needs to be verified.
You probably have easier transition with arduino Mega.
Instead of using 4 pins for your buttons and switches, just use a PISO 8bit shift register. A 74HC165 should do. It needs 3 pins and can be extended as much as you need by daisy chaining them. You will still need pulldown resistors (or up) depending on how you want to read the data in.
A mega pro mini board would have plenty of IO (16 analog/54 digital) and not require extensive code changes. Also at 38x52mm, isn't much bigger than a 18x44mm nano. Plus you get a decent accuracy crystal clock.
Potentiometers provide variable resistance, resulting in an analog voltage that needs to be read by an ADC (like the ones built into Arduino analog pins). The 74HC165 can only detect whether a signal is HIGH (logic 1) or LOW (logic 0), which is not useful for analog values.
it is expensive, and I'm trying to make this controller as chip as possible
Don't know why people muck around with these things given a good range 10 channel flysky transmitter on 2.4g with a telemetry receiver can be had for around AUD$70.00 including delivery.
I live in India where the price of 10 channel flysky is 10,000 rupes so not everyone can afford it
that's why I I am trying to make one
and why not make it when you make it under 1000 rupes
If you are just missing few analog pins, use 4-CH ADC module like ADS1115. They cost pennies.
but can i use ESP32 dev module
I answered that already. Yes.
It has plenty of analog pins and if you don't need wifi, you can use them all.
But Esp32 ADC is not one of the best around, especially at both ends of the range.
This means that if you have very low input, like below 100mV, Esp32 reads it as 0.
I never said to connect the pots to the shift register.
AliExpress has them for cheap. Arduino Core Mega
Point being, you will not build what is shown in the video without outlaying more on all the gear needed to complete.
Then compare to the flysky 10.
but what will I do with having digital pins free I want analog pins free
Can I use one of these pins to reduce the use of analog pins
or I will use ADS1115 because ADS1115 saves 2 analog pins that I can use for potantiometer
yes, the Nano ICSP pins are used for SPI but if you are not using SPI D11, D12 and D13can be used for general IO
You could get a different display that doesn’t use SDA or SCL which will save you 2 more analog pins. You could get one that uses the SPI bus, you can also use the same pins you are using now for the Transmitter module, you would just need one more pin for the displays CS line.
The other alternative would be the Arduino Core Mega that I linked earlier. With that you can have as many pots as you want.
There are also Analog Multiplexers too but I think the Core Mega would be the better option.
