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520送什么?DIY一个高颜值RGB时钟,女生看了都想要
点击上方“小麦大叔”,选择“置顶/星标公众号”
材料准备
PCB ESP8266或Nodemcu 跳线 焊接工具
第1步: 准备工作
第2步:使用Neo Pixel Led制作7段显示器
DOUT
连接到第二个面板的DIN
。第3步:连接仪表盘
Dash
,包含了2个LED作为二进制数字,这2个LED灯每隔一秒就会发光一次。第4步:NodeMCU/ESP8266介绍
第5步:代码中支持的功能
使用触觉开关的温度和湿度显示
使用引脚A0的LDR传感器进行亮度控制
第6步:视频演示
第7步:7段时钟
第8步:代码
首先使用库来初始化代码:
#include <ESP8266WiFi.h>
#include <Adafruit_NeoPixel.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <TimeLib.h>
#include <DHT.h>
#include <Adafruit_Sensor.h>
定义所有像素、I/O引脚、传感器引脚:
#define PIXEL_PER_SEGMENT 2 // Number of LEDs in each Segment
#define PIXEL_DIGITS 4 // Number of connected Digits
#define PIXEL_PIN 2 // GPIO Pin
#define PIXEL_DASH 1 // Binary segment
#define LDR_PIN A0 // LDR pin
#define DHT_PIN 13 // DHT Sensor pin
#define BUTTON_PIN 12 // Button pin
3. 对于时间格式,使用Wi-Fi把ESP8266连接到互联网:
WiFi.begin(ssid, password);
Serial.print("Connecting.");
while ( WiFi.status() != WL_CONNECTED )
时间设置:
void disp_Time() {
clearDisplay();
writeDigit(0, Hour / 10);
writeDigit(1, Hour % 10);
writeDigit(2, Minute / 10);
writeDigit(3, Minute % 10);
writeDigit(4, Second / 10);
writeDigit(5, Second % 10);
disp_Dash();
5. 面板上的颜色设置:
if (index == 0 || index == 1 ) color = strip.Color(0, Brightness, 0);
if (index == 2 || index == 3 ) color = strip.Color(0, Brightness, 0);
if (index == 4 || index == 5 ) color = strip.Color(Brightness, 0, 0);
第9步:完整代码
#include <ESP8266WiFi.h>
#include <Adafruit_NeoPixel.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <TimeLib.h>
#include <DHT.h>
#include <Adafruit_Sensor.h>
#define PIXEL_PER_SEGMENT 2 // Number of LEDs in each Segment
#define PIXEL_DIGITS 4 // Number of connected Digits
#define PIXEL_PIN 2 // GPIO Pin
#define PIXEL_DASH 1 // Binary segment
#define LDR_PIN A0 // LDR pin
#define DHT_PIN 13 // DHT Sensor pin
#define BUTTON_PIN 12 // Button pin
// Uncomment the type of sensor in use
#define DHT_TYPE DHT11 // DHT 11
//#define DHT_TYPE DHT22 // DHT 22 (AM2302)
//#define DHT_TYPE DHT21 // DHT 21 (AM2301)
#define TIME_FORMAT 12 // 12 = 12 hours format || 24 = 24 hours format
Adafruit_NeoPixel strip = Adafruit_NeoPixel((PIXEL_PER_SEGMENT * 7 * PIXEL_DIGITS) + (PIXEL_DASH * 2), PIXEL_PIN, NEO_GRB + NEO_KHZ800);
DHT dht(DHT_PIN, DHT_TYPE);
// set Wi-Fi SSID and password
const char *ssid = "Hackster";
const char *password = "Sainisagar7294";
WiFiUDP ntpUDP;
// 'time.nist.gov' is used (default server) with +1 hour offset (3600 seconds) 60 seconds (60000 milliseconds) update interval
NTPClient timeClient(ntpUDP, "time.nist.gov", 19800, 60000); //GMT+5:30 : 5*3600+30*60=19800
int period = 2000; //Update frequency
unsigned long time_now = 0;
int Second, Minute, Hour;
// set default brightness
int Brightness = 40;
// current temperature, updated in loop()
int Temperature;
bool Show_Temp = false;
//Digits array
byte digits[12] = {
//abcdefg
0b1111110, // 0
0b0110000, // 1
0b1101101, // 2
0b1111001, // 3
0b0110011, // 4
0b1011011, // 5
0b1011111, // 6
0b1110000, // 7
0b1111111, // 8
0b1110011, // 9
0b1001110, // C
0b1000111, // F
};
//Clear all the Pixels
void clearDisplay() {
for (int i = 0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, strip.Color(0, 0, 0));
}
strip.show();
}
void setup() {
Serial.begin(115200);
strip.begin();
strip.show();
dht.begin();
pinMode(BUTTON_PIN, INPUT);
WiFi.begin(ssid, password);
Serial.print("Connecting.");
while ( WiFi.status() != WL_CONNECTED ) {
delay(500);
Serial.print(".");
}
Serial.println("connected");
timeClient.begin();
delay(10);
}
void loop() {
if (WiFi.status() == WL_CONNECTED) { // check WiFi connection status
int sensor_val = analogRead(LDR_PIN);
Brightness =40;
timeClient.update();
int Hours;
unsigned long unix_epoch = timeClient.getEpochTime(); // get UNIX Epoch time
Second = second(unix_epoch); // get seconds
Minute = minute(unix_epoch); // get minutes
Hours = hour(unix_epoch); // get hours
if (TIME_FORMAT == 12) {
if (Hours > 12) {
Hour = Hours - 12;
}
else
Hour = Hours;
}
else
Hour = Hours;
}
if (digitalRead(BUTTON_PIN) == LOW) {
Show_Temp = true;
}
else
Show_Temp = false;
if (Show_Temp) {
Temperature = dht.readTemperature();
Serial.println(Temperature);
clearDisplay();
writeDigit(0, Temperature / 10);
writeDigit(1, Temperature % 10);
writeDigit(2, 10);
strip.setPixelColor(28, strip.Color(Brightness, Brightness, Brightness));
strip.show();
delay(3000);
clearDisplay();
Show_Temp = false;
}
while (millis() > time_now + period) {
time_now = millis();
disp_Time(); // Show Time
}
}
void disp_Time() {
clearDisplay();
writeDigit(0, Hour / 10);
writeDigit(1, Hour % 10);
writeDigit(2, Minute / 10);
writeDigit(3, Minute % 10);
writeDigit(4, Second / 10);
writeDigit(5, Second % 10);
disp_Dash();
strip.show();
}
void disp_Dash() {
int dot, dash;
for (int i = 0; i < 2; i++) {
dot = 2 * (PIXEL_PER_SEGMENT * 7) + i;
for (int j = 0; j < PIXEL_DASH; j++) {
dash = dot + j * (2 * (PIXEL_PER_SEGMENT * 7) + 2);
Second % 2 == 0 ? strip.setPixelColor(dash, strip.Color(0,Brightness ,0)) : strip.setPixelColor(dash, strip.Color(0, Brightness,0));
}
}
}
void writeDigit(int index, int val) {
byte digit = digits[val];
int margin;
if (index == 0 || index == 1 ) margin = 0;
if (index == 2 || index == 3 ) margin = 1;
if (index == 4 || index == 5 ) margin = 2;
for (int i = 6; i >= 0; i--) {
int offset = index * (PIXEL_PER_SEGMENT * 7) + i * PIXEL_PER_SEGMENT + margin * 2;
uint32_t color;
if (digit & 0x01 != 0) {
if (index == 0 || index == 1 ) color = strip.Color(Brightness, 0, Brightness);
if (index == 2 || index == 3 ) color = strip.Color(Brightness, 0,Brightness);
if (index == 4 || index == 5 ) color = strip.Color(Brightness, 0, 0);
}
else
color = strip.Color(0, 0, 0);
for (int j = offset; j < offset + PIXEL_PER_SEGMENT; j++) {
strip.setPixelColor(j, color);
}
digit = digit >> 1;
}
}
第10步:完整电路图
第11步:PCB设计(面板部分)
主要的PCB设计,用于显示数字和其他字母。
第12步:PCB设计(Dash部分)
第13步:故障排除
DIN
总是与DOUT
串联在一起,如果接反了或从任何地方断开了,整个装置就会停止工作;按上面的图连接Dash;
确保所有的连接都焊接好,干焊会导致数据值和颜色的改变;
在焊接时,不要把印刷电路板加热太多,温度保持在300度。
第14步:完整展示
希望大家喜欢这个项目!公众号后台回复【RGB时钟】获取相关资料。
原文地址:https://www.instructables.com/RGB-7-Segment-Clock-Using-ESP8266/
原作者:sainisagar7294 译文首发于:DF创客社区
版权声明:本文来源网络,版权归原作者所有。版权问题,请联系删除。
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