Next bus departure in real time
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This board is an Arduino mega shield with an ethernet module on it. It's displaying real time departures of the 3 nearest bus lines from my house.
The Green 7-segments are displaying the line number and the orange ones are for the times (HH MM SS / hours minutes seconds).
It connects on the Keolis open data server every 24 sec to get next departures and after that it displays the request time for 2 seconds then the departure time for 2 sec and a countdown during next 20 seconds.
Arduino Uno:
TJ
//MC14499
static int latchPin = 8; //enable
static int clockPin = 12; //clock
static int dataPin = 11; //dataArduino Mega:
//MC14499
static int latchPin = A0; //enable
static int clockPin = 49; //clock
static int dataPin = 48; //dataCommon:
void mc14499ShiftOut(byte val)
{
for (int i = 0; i < 4; i++) {
digitalWrite(dataPin, !!(val & (1 << (3 - i))));
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
}
}/*
b1 => Green 7-segment "bus 1"
b2 => Green 7-segment "bus 2"
h1 => Orange 7-segment "hours 1"
h2 => Orange 7-segment "hours 2"
m1 => Orange 7-segment "minutes 1"
m2 => Orange 7-segment "minutes 2"
s1 => Orange 7-segment "seconds 1"
s2 => Orange 7-segment "seconds 2"
*/
static void affi7(byte b1, byte b2, byte h1, byte h2, byte m1, byte m2, byte s1, byte s2)
{
digitalWrite(latchPin, LOW);
mc14499ShiftOut(B00001111);
mc14499ShiftOut(s2);
mc14499ShiftOut(s1);
mc14499ShiftOut(m2);
mc14499ShiftOut(m1);
mc14499ShiftOut(B00001111);
mc14499ShiftOut(b2);
mc14499ShiftOut(b1);
mc14499ShiftOut(h1);
mc14499ShiftOut(h2);
digitalWrite(latchPin, HIGH);
}
static void affi(int bus, int hours, int minutes, int seconds)
{
byte s2 = (byte)(seconds-(seconds/10)*10);
byte s1 = (byte)(seconds/10);
byte m2 = (byte)(minutes-(minutes/10)*10);
byte m1 = (byte)(minutes/10);
byte b2 = (byte)(bus-(bus/10)*10);
byte b1 = (byte)(bus/10);
byte h2 = (byte)(hours-(hours/10)*10);
byte h1 = (byte)(hours/10);
if (b1 == 0)
b1 = 0xFF;
if (hours == 0xFFFF) {
h1 = 0xFF;
h2 = 0xFF;
if (minutes == 0xFFFF) {
m1 = 0xFF;
m2 = 0xFF;
}
}
affi7(b1, b2, h1, h2, m1, m2, s1, s2);
}
void setup() //arduino setup
{
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
}On the picture:void loop()
{
affi(2, 19, 50, 00);
}
Please find the new section "Code" in the project logs.
Regards,
TJ
Hari Wiguna
Nick Bild
hello, I recovered some cards with 8 display operated by 2 mc14499 but I can not manage them with arduino, could you help me with the code