一款老外制使用ARDUINO制作的电压源，搬来分享给大家

icespirit · 发表于 2026-7-27 15:45:42

本帖最后由 icespirit 于 2026-7-27 15:49 编辑

看到一老外制作的DC电压源，不知道是否有人感兴趣，顺手搬来，给需要的、动手能力强的人玩玩

个人认为不好的地方是使用了触摸屏调节操作，感觉比较费电，要是那种传统机械式按钮调节或编码器操作的可能会更好，更省电
还有ARDUINO nano的处理速度担心有些拉跨，触摸屏操作的话，有些担心那颗CPU有些慢的感觉，不知道实际情况和我预想的有多差别

//SCULLCOM HOBBY ELECTRONICS
//DC VOLTAGE CALIBRATOR
//Using TFT Display with Touch Screen
//30th November 2017
//Version 1.0
#include <Adafruit_GFX.h> //https://github.com/adafruit/Adafruit-GFX-Library/archive/master.zip
#include <Adafruit_ILI9341.h> //https://github.com/adafruit/Adafruit_ILI9341/archive/master.zip
#include <URTouch.h> //http://www.rinkydinkelectronics.com/download.php?f=URTouch.zip
#include <MCP4922.h> //https://github.com/helgenodland/MCP4922-Arduino-SPI-Library/archive/master.zip
#include <SPI.h>
// Pins for TFT
#define TFT_DC 9 // Pin connection D / C display
#define TFT_CS 10 // Pin of CS display output connection
#define TFT_RST 8 // Pin of output connection RESET (If connected to power or button, then comment out this line, and uncomment the next one)
// #define TFT_RST -1 // If the display of the RESET is connected to the power supply or the RESET button on the Arduino
#define TFT_MISO 12 // Pin of display output connection SDO(MISO)
#define TFT_MOSI 11 // Pin of display output connection SDI(MOSI)
#define TFT_CLK 13 // Pin of display output connection SCK
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO); // Create a display object and inform the library of the pinout for working with graphics
// Pins for Touch Screen
#define t_SCK 3 // Pin of display output connection T_CLK
#define t_CS 4 // Pin of display output connection T_CS
#define t_MOSI 5 // Pin of display output connection T_DIN
#define t_MISO 6 // Pin of display output connection T_DOUT
#define t_IRQ 7 // Pin of display output connection T_IRQ
URTouch ts(t_SCK, t_CS, t_MOSI, t_MISO, t_IRQ); // Create an object of the sensor module and inform the library of the pinout for working with it
MCP4922 DAC(11, 13, 2, 14); // (MOSI,SCK,CS,LDAC) define Connections for UNO_board,
float volts = 0.000; //set initial voltage
float voltsU = 0.000;
int x, y; //TFT screen cooridinates
char myInput[6]; //store number from keypad - was [5]
int n = 0; //index for myInput array
char key;
int keyDelay = 500; //was 1000
void setup()
{
//volts=0; //reset DAC output to zero at statup
//dacOutput();
Serial.begin(9600);
pinMode(A0, OUTPUT);
digitalWrite(A0, LOW);
pinMode(A1, OUTPUT);
digitalWrite(A1, LOW);
pinMode(A2, OUTPUT);
digitalWrite(A2, LOW);
pinMode(A3, OUTPUT);
digitalWrite(A3, LOW);
pinMode(A4, OUTPUT);
digitalWrite(A4, LOW);
volts = 0; //reset DAC output to zero at statup
dacOutput(); //set DAC output to volts
voltsU = 1; //sets voltsU to be different to volts so first voltage entry is accepted
tft.begin(); // Initialize the start of work with the graphic display
tft.setRotation(1); // We translate the display into landscape orientation
ts.InitTouch(); // Initialize the touchscreen display module
ts.setPrecision(PREC_MEDIUM); // Determine the necessary accuracy of the processing of the pressures: PREC_LOW - low, PREC_MEDIUM - medium, PREC_HI - high, PREC_EXTREME - maximum
tft.fillScreen(ILI9341_BLACK);
setCommonDisplay();
mainInputDisplay();
displayVoltage();
}
void loop()
{
while (true)
{
readTouchScreen(); //check for input fron touch screen
{
if ((y >= 180) && (y <= 200)) //keypad top row
{
if ((x >= 10) && (x <= 90)) //SET button
{
tft.fillRect(10, 50, 305, 160, ILI9341_BLACK);
setVoltageKeypad(); //
keyPadEntry();
}
}
if ((y >= 180) && (y <= 200)) //keypad top row
{
if ((x >= 110) && (x <= 180)) //Output ON button
{
digitalWrite(A2, HIGH);
}
}
if ((y >= 180) && (y <= 200)) //keypad top row
{
if ((x >= 200) && (x <= 280)) //Output OFF button
{
digitalWrite(A2, LOW);
}
}
}
Serial.print("voltsU = ");
Serial.println(voltsU);
Serial.print("volts = ");
Serial.println(volts);
if (voltsU != volts) {
displayVoltage(); //print reference voltage on TFT main display
}
if (voltsU != volts) {
dacOutput();
}
//else{
// voltsU = volts;
//}
Serial.println(volts, 3); //test only
}
}
void setVoltageKeypad()
{
tft.fillRect(70, 90, 180, 120, ILI9341_RED); //fill keypad area with RED
for (int i = 70; i <= 190; i = i + 60) { //coordinates for drawing keypad outline
for (int p = 90; p <= 180; p = p + 30) { //coordinates for drawing keypad outline
tft.drawRect(i, p, 60, 30, ILI9341_WHITE); //draw keypad outline in WHITE
}
}
tft.setTextColor(ILI9341_YELLOW); // Determine the color of text for display
tft.setTextSize(2); // Determine the font size for display
int t = 1;
for (int p = 100; p <= 160; p = p + 30) { //routine to print keypad numbers 1 to 9
for (int i = 95; i <= 215; i = i + 60) { //
tft.setCursor(i, p);
tft.print(t);
t = t + 1;
}
}
tft.setCursor(95, 185); // Determine the coordinates for decimal point on keypad
tft.print("."); // Print decimal point on keypad
tft.setCursor(155, 190); // Determine the coordinates for 0 on keypad
tft.print("0"); // Print 0 on keypad
tft.setCursor(205, 190); // Determine the coordinates for Delete (back space)on keypad
tft.print("Del"); // Print Del on keypad
tft.fillRect(255, 180, 60, 30, ILI9341_RED); //Draw RED button for SET Voltage on keypad
tft.drawRect(255, 180, 60, 30, ILI9341_WHITE); //Draw WHITE outline on SET button on keypad
tft.setTextColor(ILI9341_YELLOW); // Determine the color of text for display
tft.setTextSize(2); // Determine the font size for display
tft.setCursor(270, 190); // Determine the coordinates for printing SET on keypad
tft.print("SET"); // Print SET on keypad
}
void setCommonDisplay()
{
tft.drawRect(0, 0, 320, 240, ILI9341_MAGENTA);
tft.setTextSize(3);
tft.setTextColor(ILI9341_GREEN); // Determine the color of text for display
tft.setCursor(10, 10); // Determine the coordinates of the upper-left corner of the output area
tft.print("Voltage Reference"); // Display the text
tft.setTextColor(ILI9341_WHITE); // Determine the color of text for display
tft.setTextSize(2); // Determine the font size for display
tft.setCursor(5, 220); // Determine the coordinates of the upper-left corner of the output area
tft.print("Scullcom Hobby Electronics"); // Display the text
}
void mainInputDisplay()
{
// make the color selection boxes
//tft.fillRect(Hpos, Vpos, width, Height, Colour);
//colours Black, White, Red, Yellow, Green, Cyan, Blue, Magenta
for (int i = 20; i <= 220; i = i + 100) {
tft.drawRect(i, 180, 80, 30, ILI9341_RED); // draw rectangle around box
tft.fillRect(i, 180, 80, 30, ILI9341_WHITE); // fill rectangle
}
tft.setTextColor(ILI9341_BLUE); // Determine the color of text for display
tft.setTextSize(2); // Determine the font size for display
tft.setCursor(30, 187); // Determine the coordinates of the upper-left corner of the output area
tft.print("SET V"); // Display the text
tft.setCursor(150, 187); // Determine the coordinates of the upper-left corner of the output area
tft.print("ON"); // Display the text
tft.setCursor(245, 187); // Determine the coordinates of the upper-left corner of the output area
tft.print("OFF"); // Display the text
}
void readTouchScreen() //touch screen check routine
{
if (ts.dataAvailable())
{
ts.read();
x = ts.getX();
y = ts.getY();
Serial.println(" ");
Serial.print("X = "); Serial.print(x);
Serial.print(" Y = "); Serial.print(y);
}
}
void keyPadEntry()
{
while (true)
{
readTouchScreen();
tft.setTextSize(3); // Determine the font size for display
tft.setCursor(180, 50); // Determine the coordinates of the upper-left corner of the output area
tft.print("Volt");
if ((y >= 90) && (y <= 110))
{
if ((x >= 60) && (x <= 110))
{
Serial.println("KEY 1 pressed");
key = '1';
addNewNumber();
}
}
if ((y >= 90) && (y <= 110)) //keypad 1st row
{
if ((x >= 120) && (x <= 170)) //Keypad 2 return button
{
Serial.println("KEY 2 pressed");
key = '2';
addNewNumber();
}
}
if ((y >= 90) && (y <= 110)) //keypad 1st row
{
if ((x >= 180) && (x <= 230)) //Keypad 3 return button
{
Serial.println("KEY 3 pressed");
key = '3';
addNewNumber();
}
}
if ((y >= 120) && (y <= 140)) //keypad 2nd row
{
if ((x >= 60) && (x <= 110)) //Keypad 4 return button
{
Serial.println("KEY 4 pressed");
key = '4';
addNewNumber();
}
}
if ((y >= 120) && (y <= 140)) //keypad 2nd row
{
if ((x >= 120) && (x <= 170)) //Keypad 5 return button
{
Serial.println("KEY 5 pressed");
key = '5';
addNewNumber();
}
}
if ((y >= 120) && (y <= 140)) //keypad 2nd row
{
if ((x >= 180) && (x <= 230)) //Keypad 6 return button
{
Serial.println("KEY 6 pressed");
key = '6';
addNewNumber();
}
}
if ((y >= 150) && (y <= 170)) //keypad 3rd row
{
if ((x >= 60) && (x <= 110)) //Keypad 7 return button
{
Serial.println("KEY 7 pressed");
key = '7';
addNewNumber();
}
}
if ((y >= 150) && (y <= 170)) //keypad 3rd row
{
if ((x >= 120) && (x <= 170)) //Keypad 8 return button
{
Serial.println("KEY 8 pressed");
key = '8';
addNewNumber();
}
}
if ((y >= 150) && (y <= 170)) //keypad 3rd row
{
if ((x >= 180) && (x <= 230)) //Keypad 9 return button
{
Serial.println("KEY 9 pressed");
key = '9';
addNewNumber();
}
}
if ((y >= 180) && (y <= 200)) //keypad 4th row
{
if ((x >= 60) && (x <= 110)) //Keypad . return button
{
Serial.println("KEY . pressed");
key = '.';
addNewNumber();
}
}
if ((y >= 180) && (y <= 200)) //keypad 4th row
{
if ((x >= 120) && (x <= 170)) //Keypad 0 return button
{
Serial.println("KEY 0 pressed");
key = '0';
addNewNumber();
}
}
if ((y >= 180) && (y <= 200)) //keypad 4th row
{
if ((x >= 180) && (x <= 230)) //Keypad Del return button
{
Serial.println("KEY Del pressed");
key = ' ';
n = n - 1;
if (n <= 0) {
n = 0;
}
myInput[n] = key;
myInput[n + 1] = '\0';
Serial.print(n); //test only
tft.setTextSize(3); // Determine the font size for display
tft.setCursor(70, 50); // Determine the coordinates of the upper-left corner of the output area
tft.setTextColor(ILI9341_YELLOW, ILI9341_BLACK); // Determine the color of text and background for display
tft.print(myInput); // Display the text
delay(keyDelay);
x = 0;
y = 0;
}
}
if ((y >= 180) && (y <= 200)) //
{
if ((x >= 240) && (x <= 310)) //Keypad SET return button
{
Serial.println("volt set");
volts = atof(myInput); //convert voltage string to float
x = 0;
y = 0;
tft.fillRect(10, 50, 305, 160, ILI9341_BLACK);
mainInputDisplay();
for ( int i = 0; i < sizeof(myInput); ++i ) //clear myInput array
myInput[i] = (char)0; //clear myInput array
n = 0;
return;
}
}
}
}
void dacOutput()
{
if (volts > 8.001) {
volts = volts / 4;
digitalWrite(A1, HIGH); //set INA105 gain switch to x2
digitalWrite(A3, HIGH); //set INA105 gain switch to x2
SPI.begin();
DAC.Set((volts * 1000), 0);
//delay(100);
SPI.end();
volts = volts * 4; //set TFT display reading to input reading
} else if (volts > 4.000 && volts < 8.001) {
volts = volts / 2;
digitalWrite(A1, LOW); //set INA105 gain switch to x2
digitalWrite(A3, HIGH);
SPI.begin();
DAC.Set((volts * 1000), 0);
//delay(100);
SPI.end();
volts = volts * 2; //set TFT display reading to input reading
} else {
digitalWrite(A1, LOW);
digitalWrite(A3, LOW);
SPI.begin();
DAC.Set((volts * 1000), 0);
//delay(100);
SPI.end();
}
voltsU = volts;
}
void displayVoltage()
{
tft.setTextSize(4); // Determine the font size for display (text size was 4)
tft.setTextColor(ILI9341_YELLOW, ILI9341_BLACK); // Determine the color of text for display
tft.setCursor(20, 100); // Determine the coordinates of the upper-left corner of the output area
tft.print("VOLTS "); // Display the text
tft.print(volts, 3);
}
void checkMainSelection()
{
while (true)
{
readTouchScreen();
if ((y >= 180) && (y <= 255)) //keypad top row
{
if ((x >= 10) && (x <= 90)) //SET button
{
setVoltageKeypad(); //
keyPadEntry();
mainInputDisplay();
}
}
}
}
void addNewNumber()
{
if (n <= 4)
{
myInput[n] = key;
myInput[n + 1] = '\0';
n++;
} else {
n = 4;
myInput[n + 1] = '\0';
}
tft.setTextSize(3); // Determine the font size for display
tft.setCursor(70, 50); // Determine the coordinates of the upper-left corner of the output area
tft.print(myInput); // Display the text
delay(keyDelay);
x = 0;
y = 0;
}

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人艰不拆了 · 发表于 2026-7-27 15:55:18

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xuguangqi08 · 发表于 2026-7-27 16:34:38

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oldeagle · 发表于 2026-7-27 18:44:20

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[Arduino] 一款老外制使用ARDUINO制作的电压源，搬来分享给大家

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