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I would like help with a door lock system and a knight rider sketch also  

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SFEpoxy2020
(@sfepoxy2020)
Active Member
Joined: 3 months ago
Posts: 5
2020-10-05 11:28 pm  

I need help with two different sketch's, one is a door lock system so I can lock my work station from the inside removing the handle from the door and a knight rider led light's for my friend's car but i am using a arduino uno clone and since I am just starting in this well I would like some help, thanks to all that responde.

 

email me for sketch's if needed


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DroneBot Workshop
(@dronebot-workshop)
Workshop Guru Admin
Joined: 1 year ago
Posts: 652
2020-10-06 3:13 pm  

@sfepoxy2020

First of all, welcome to the forum!

Posted by: @sfepoxy2020

I need help with two different sketch's,

It probably would be a good idea to make a separate post for each of these sketches, especially as they have completely unrelated purposes.  And it also would help if you described what the issues you are having difficulty with for each sketch.  It's a lot easier to assist someone if you know what their problem is.

Posted by: @sfepoxy2020

email me for sketch's if needed

No one here can see your email address as it is being kept private for your safety and security. Members with over 10 posts can exchange Private Messages here on the forum.

Also, it kind of defeats the purpose of having a forum if you keep the sketches private! A far better idea would be to use the code button (the now on the editor toolbar that looks like "<>") and include the sketches in your posts.

😎

Bill

This post was modified 2 months ago by DroneBot Workshop

"Never trust a computer you can’t throw out a window." — Steve Wozniak


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SFEpoxy2020
(@sfepoxy2020)
Active Member
Joined: 3 months ago
Posts: 5
2020-10-06 6:31 pm  

@dronebot-workshop Thanks Bill, the sketch's are as follows: (door Lock ;

 

Typical pin layout used:
-----------------------------------------------------------------------------------------
MFRC522 Arduino Arduino Arduino Arduino Arduino
Reader/PCD Uno/101 Mega Nano v3 Leonardo/Micro Pro Micro
Signal Pin Pin Pin Pin Pin Pin
-----------------------------------------------------------------------------------------
RST/Reset RST 9 5 D9 RESET/ICSP-5 RST
SPI SS SDA(SS) 10 53 D10 10 10
SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16
SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14
SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15
*/

#include <EEPROM.h> // We are going to read and write PICC's UIDs from/to EEPROM
#include <SPI.h> // RC522 Module uses SPI protocol
#include <MFRC522.h> // Library for Mifare RC522 Devices
#include <Servo.h>
/*
Instead of a Relay you may want to use a servo. Servos can lock and unlock door locks too
Relay will be used by default
*/

/*
For visualizing whats going on hardware we need some leds and to control door lock a relay and a wipe button
(or some other hardware) Used common anode led,digitalWriting HIGH turns OFF led Mind that if you are going
to use common cathode led or just seperate leds, simply comment out #define COMMON_ANODE,
*/

#define COMMON_ANODE

#ifdef COMMON_ANODE
#define LED_ON LOW
#define LED_OFF HIGH
#else
#define LED_ON HIGH
#define LED_OFF LOW
#endif

#define redLed 8 // Set Led Pins
#define greenLed 7
#define blueLed 6

#define relay 4
#define servo 3 // Button pin for WipeMode

bool programMode = false; // initialize programming mode to false

uint8_t successRead; // Variable integer to keep if we have Successful Read from Reader

byte storedCard[4]; // Stores an ID read from EEPROM
byte readCard[4]; // Stores scanned ID read from RFID Module
byte masterCard[4]; // Stores master card's ID read from EEPROM

// Create MFRC522 instance.
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN);

Servo lockServo; //Servo for locking mechanism
int lockPos = 15; //Locked position limit
int unlockPos = 75; //Unlocked position limit
boolean locked = true;

int redLEDPin = 8;
int greenLEDPin = 7;

///////////////////////////////////////// Setup ///////////////////////////////////
void setup() {
//Arduino Pin Configuration
pinMode(redLed, OUTPUT);
pinMode(greenLed, OUTPUT);
pinMode(blueLed, OUTPUT);
pinMode(wipeB, INPUT_PULLUP); // Enable pin's pull up resistor
pinMode(relay, OUTPUT);
//Be careful how relay circuit behave on while resetting or power-cycling your Arduino
digitalWrite(relay, HIGH); // Make sure door is locked
digitalWrite(redLed, LED_OFF); // Make sure led is off
digitalWrite(greenLed, LED_OFF); // Make sure led is off
digitalWrite(blueLed, LED_OFF); // Make sure led is off

//Protocol Configuration
Serial.begin(9600); // Initialize serial communications with PC
SPI.begin(); // MFRC522 Hardware uses SPI protocol
mfrc522.PCD_Init(); // Initialize MFRC522 Hardware

//If you set Antenna Gain to Max it will increase reading distance
//mfrc522.PCD_SetAntennaGain(mfrc522.RxGain_max);

Serial.println(F("Access Control Example v0.1")); // For debugging purposes
ShowReaderDetails(); // Show details of PCD - MFRC522 Card Reader details

//Wipe Code - If the Button (wipeB) Pressed while setup run (powered on) it wipes EEPROM
if (digitalRead(wipeB) == LOW) { // when button pressed pin should get low, button connected to ground
digitalWrite(redLed, LED_ON); // Red Led stays on to inform user we are going to wipe
Serial.println(F("Wipe Button Pressed"));
Serial.println(F("You have 10 seconds to Cancel"));
Serial.println(F("This will be remove all records and cannot be undone"));
bool buttonState = monitorWipeButton(10000); // Give user enough time to cancel operation
if (buttonState == true && digitalRead(wipeB) == LOW) { // If button still be pressed, wipe EEPROM
Serial.println(F("Starting Wiping EEPROM"));
for (uint16_t x = 0; x < EEPROM.length(); x = x + 1) { //Loop end of EEPROM address
if (EEPROM.read(x) == 0) { //If EEPROM address 0
// do nothing, already clear, go to the next address in order to save time and reduce writes to EEPROM
}
else {
EEPROM.write(x, 0); // if not write 0 to clear, it takes 3.3mS
}
}
Serial.println(F("EEPROM Successfully Wiped"));
digitalWrite(redLed, LED_OFF); // visualize a successful wipe
delay(200);
digitalWrite(redLed, LED_ON);
delay(200);
digitalWrite(redLed, LED_OFF);
delay(200);
digitalWrite(redLed, LED_ON);
delay(200);
digitalWrite(redLed, LED_OFF);
}
else {
Serial.println(F("Wiping Cancelled")); // Show some feedback that the wipe button did not pressed for 15 seconds
digitalWrite(redLed, LED_OFF);
}
}
// Check if master card defined, if not let user choose a master card
// This also useful to just redefine the Master Card
// You can keep other EEPROM records just write other than 143 to EEPROM address 1
// EEPROM address 1 should hold magical number which is '143'
if (EEPROM.read(1) != 143) {
Serial.println(F("No Master Card Defined"));
Serial.println(F("Scan A PICC to Define as Master Card"));
do {
successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
digitalWrite(blueLed, LED_ON); // Visualize Master Card need to be defined
delay(200);
digitalWrite(blueLed, LED_OFF);
delay(200);
}
while (!successRead); // Program will not go further while you not get a successful read
for ( uint8_t j = 0; j < 4; j++ ) { // Loop 4 times
EEPROM.write( 2 + j, readCard[j] ); // Write scanned PICC's UID to EEPROM, start from address 3
}
EEPROM.write(1, 143); // Write to EEPROM we defined Master Card.
Serial.println(F("Master Card Defined"));
}
Serial.println(F("Welcome Master"));
Serial.println(F("Master Card's UID"));
for ( uint8_t i = 0; i < 4; i++ ) { // Read Master Card's UID from EEPROM
masterCard[i] = EEPROM.read(2 + i); // Write it to masterCard
Serial.print(masterCard[i], HEX);
}
Serial.println("");
Serial.println(F("Waiting On A Key"));
Serial.println(F("Everything is ready"));
Serial.println(F("Waiting PICCs to be scanned"));
cycleLeds(); // Everything ready lets give user some feedback by cycling leds
}

///////////////////////////////////////// Main Loop ///////////////////////////////////
void loop () {
do {
successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
// When device is in use if wipe button pressed for 10 seconds initialize Master Card wiping
if (digitalRead(wipeB) == LOW) { // Check if button is pressed
// Visualize normal operation is iterrupted by pressing wipe button Red is like more Warning to user
digitalWrite(redLed, LED_ON); // Make sure led is off
digitalWrite(greenLed, LED_OFF); // Make sure led is off
digitalWrite(blueLed, LED_OFF); // Make sure led is off
// Give some feedback
Serial.println(F("Wipe Button Pressed"));
Serial.println(F("Master Card will be Erased! in 10 seconds"));
bool buttonState = monitorWipeButton(10000); // Give user enough time to cancel operation
if (buttonState == true && digitalRead(wipeB) == LOW) { // If button still be pressed, wipe EEPROM
EEPROM.write(1, 0); // Reset Magic Number.
Serial.println(F("Master Card Erased from device"));
Serial.println(F("Please reset to re-program Master Card"));
while (1);
}
Serial.println(F("Master Card Erase Cancelled"));
}
if (programMode) {
cycleLeds(); // Program Mode cycles through Red Green Blue waiting to read a new card
}
else {
normalModeOn(); // Normal mode, blue Power LED is on, all others are off
}
}
while (!successRead); //the program will not go further while you are not getting a successful read
if (programMode) {
if ( isMaster(readCard) ) { //When in program mode check First If master card scanned again to exit program mode
Serial.println(F("Master Card Scanned"));
Serial.println(F("Exiting Program Mode"));
Serial.println(F("-----------------------------"));
programMode = false;
return;
}
else {
if ( findID(readCard) ) { // If scanned card is known delete it
Serial.println(F("I know this PICC, removing..."));
deleteID(readCard);
Serial.println("-----------------------------");
Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
}
else { // If scanned card is not known add it
Serial.println(F("I do not know this PICC, adding..."));
writeID(readCard);
Serial.println(F("-----------------------------"));
Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
}
}
}
else {
if ( isMaster(readCard)) { // If scanned card's ID matches Master Card's ID - enter program mode
programMode = true;
Serial.println(F("Hello Master - Entered Program Mode"));
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
Serial.print(F("I have ")); // stores the number of ID's in EEPROM
Serial.print(count);
Serial.print(F(" record(s) on EEPROM"));
Serial.println("");
Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
Serial.println(F("Scan Master Card again to Exit Program Mode"));
Serial.println(F("-----------------------------"));
}
else {
if ( findID(readCard) ) { // If not, see if the card is in the EEPROM
Serial.println(F("Welcome, You shall pass"));
granted(300); // Open the door lock for 300 ms
}
else { // If not, show that the ID was not valid
Serial.println(F("You shall not pass"));
denied();
}
}
}
}

///////////////////////////////////////// Access Granted ///////////////////////////////////
void granted ( uint16_t setDelay) {
digitalWrite(blueLed, LED_OFF); // Turn off blue LED
digitalWrite(redLed, LED_OFF); // Turn off red LED
digitalWrite(greenLed, LED_ON); // Turn on green LED
digitalWrite(relay, LOW); // Unlock door!
delay(setDelay); // Hold door lock open for given seconds
digitalWrite(relay, HIGH); // Relock door
delay(1000); // Hold green LED on for a second
}

///////////////////////////////////////// Access Denied ///////////////////////////////////
void denied() {
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
digitalWrite(redLed, LED_ON); // Turn on red LED
delay(1000);
}

///////////////////////////////////////// Get PICC's UID ///////////////////////////////////
uint8_t getID() {
// Getting ready for Reading PICCs
if ( ! mfrc522.PICC_IsNewCardPresent()) { //If a new PICC placed to RFID reader continue
return 0;
}
if ( ! mfrc522.PICC_ReadCardSerial()) { //Since a PICC placed get Serial and continue
return 0;
}
// There are Mifare PICCs which have 4 byte or 7 byte UID care if you use 7 byte PICC
// I think we should assume every PICC as they have 4 byte UID
// Until we support 7 byte PICCs
Serial.println(F("Scanned PICC's UID:"));
for ( uint8_t i = 0; i < 4; i++) { //
readCard[i] = mfrc522.uid.uidByte[i];
Serial.print(readCard[i], HEX);
}
Serial.println("");
mfrc522.PICC_HaltA(); // Stop reading
return 1;
}

void ShowReaderDetails() {
// Get the MFRC522 software version
byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
Serial.print(F("MFRC522 Software Version: 0x"));
Serial.print(v, HEX);
if (v == 0x91)
Serial.print(F(" = v1.0"));
else if (v == 0x92)
Serial.print(F(" = v2.0"));
else
Serial.print(F(" (unknown),probably a chinese clone?"));
Serial.println("");
// When 0x00 or 0xFF is returned, communication probably failed
if ((v == 0x00) || (v == 0xFF)) {
Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
Serial.println(F("SYSTEM HALTED: Check connections."));
// Visualize system is halted
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
digitalWrite(redLed, LED_ON); // Turn on red LED
while (true); // do not go further
}
}

///////////////////////////////////////// Cycle Leds (Program Mode) ///////////////////////////////////
void cycleLeds() {
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
delay(200);
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
delay(200);
digitalWrite(redLed, LED_ON); // Make sure red LED is on
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
delay(200);
}

//////////////////////////////////////// Normal Mode Led ///////////////////////////////////
void normalModeOn () {
digitalWrite(blueLed, LED_ON); // Blue LED ON and ready to read card
digitalWrite(redLed, LED_OFF); // Make sure Red LED is off
digitalWrite(greenLed, LED_OFF); // Make sure Green LED is off
digitalWrite(relay, HIGH); // Make sure Door is Locked
}

//////////////////////////////////////// Read an ID from EEPROM //////////////////////////////
void readID( uint8_t number ) {
uint8_t start = (number * 4 ) + 2; // Figure out starting position
for ( uint8_t i = 0; i < 4; i++ ) { // Loop 4 times to get the 4 Bytes
storedCard[i] = EEPROM.read(start + i); // Assign values read from EEPROM to array
}
}

///////////////////////////////////////// Add ID to EEPROM ///////////////////////////////////
void writeID( byte a[] ) {
if ( !findID( a ) ) { // Before we write to the EEPROM, check to see if we have seen this card before!
uint8_t num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
uint8_t start = ( num * 4 ) + 6; // Figure out where the next slot starts
num++; // Increment the counter by one
EEPROM.write( 0, num ); // Write the new count to the counter
for ( uint8_t j = 0; j < 4; j++ ) { // Loop 4 times
EEPROM.write( start + j, a[j] ); // Write the array values to EEPROM in the right position
}
successWrite();
Serial.println(F("Succesfully added ID record to EEPROM"));
}
else {
failedWrite();
Serial.println(F("Failed! There is something wrong with ID or bad EEPROM"));
}
}

///////////////////////////////////////// Remove ID from EEPROM ///////////////////////////////////
void deleteID( byte a[] ) {
if ( !findID( a ) ) { // Before we delete from the EEPROM, check to see if we have this card!
failedWrite(); // If not
Serial.println(F("Failed! There is something wrong with ID or bad EEPROM"));
}
else {
uint8_t num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
uint8_t slot; // Figure out the slot number of the card
uint8_t start; // = ( num * 4 ) + 6; // Figure out where the next slot starts
uint8_t looping; // The number of times the loop repeats
uint8_t j;
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that stores number of cards
slot = findIDSLOT( a ); // Figure out the slot number of the card to delete
start = (slot * 4) + 2;
looping = ((num - slot) * 4);
num--; // Decrement the counter by one
EEPROM.write( 0, num ); // Write the new count to the counter
for ( j = 0; j < looping; j++ ) { // Loop the card shift times
EEPROM.write( start + j, EEPROM.read(start + 4 + j)); // Shift the array values to 4 places earlier in the EEPROM
}
for ( uint8_t k = 0; k < 4; k++ ) { // Shifting loop
EEPROM.write( start + j + k, 0);
}
successDelete();
Serial.println(F("Succesfully removed ID record from EEPROM"));
}
}

///////////////////////////////////////// Check Bytes ///////////////////////////////////
bool checkTwo ( byte a[], byte b[] ) {
for ( uint8_t k = 0; k < 4; k++ ) { // Loop 4 times
if ( a[k] != b[k] ) { // IF a != b then false, because: one fails, all fail
return false;
}
}
return true;
}

///////////////////////////////////////// Find Slot ///////////////////////////////////
uint8_t findIDSLOT( byte find[] ) {
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
for ( uint8_t i = 1; i <= count; i++ ) { // Loop once for each EEPROM entry
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
if ( checkTwo( find, storedCard ) ) { // Check to see if the storedCard read from EEPROM
// is the same as the find[] ID card passed
return i; // The slot number of the card
}
}
}

///////////////////////////////////////// Find ID From EEPROM ///////////////////////////////////
bool findID( byte find[] ) {
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
for ( uint8_t i = 1; i < count; i++ ) { // Loop once for each EEPROM entry
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
if ( checkTwo( find, storedCard ) ) { // Check to see if the storedCard read from EEPROM
return true;
}
else { // If not, return false
}
}
return false;
}

///////////////////////////////////////// Write Success to EEPROM ///////////////////////////////////
// Flashes the green LED 3 times to indicate a successful write to EEPROM
void successWrite() {
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
digitalWrite(greenLed, LED_OFF); // Make sure green LED is on
delay(200);
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
delay(200);
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
delay(200);
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
delay(200);
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
delay(200);
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
delay(200);
}

///////////////////////////////////////// Write Failed to EEPROM ///////////////////////////////////
// Flashes the red LED 3 times to indicate a failed write to EEPROM
void failedWrite() {
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
delay(200);
digitalWrite(redLed, LED_ON); // Make sure red LED is on
delay(200);
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
delay(200);
digitalWrite(redLed, LED_ON); // Make sure red LED is on
delay(200);
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
delay(200);
digitalWrite(redLed, LED_ON); // Make sure red LED is on
delay(200);
}

///////////////////////////////////////// Success Remove UID From EEPROM ///////////////////////////////////
// Flashes the blue LED 3 times to indicate a success delete to EEPROM
void successDelete() {
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
delay(200);
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
delay(200);
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
delay(200);
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
delay(200);
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
delay(200);
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
delay(200);
}

////////////////////// Check readCard IF is masterCard ///////////////////////////////////
// Check to see if the ID passed is the master programing card
bool isMaster( byte test[] ) {
return checkTwo(test, masterCard);
}

bool monitorWipeButton(uint32_t interval) {
uint32_t now = (uint32_t)millis();
while ((uint32_t)millis() - now < interval) {
// check on every half a second
if (((uint32_t)millis() % 500) == 0) {
if (digitalRead(wipeB) != LOW)
return false;
}
}
return true;
}

) and the Knight Rider sketch : (

int i
int led[]=(2,3,4,5,6,7,8,9,10,11,12,13,14);

void setup() {
for(i=0;i<12;i++)

}

void loop() {

int t = 20;
//----------->>> for this side
for(int i=2; i<14; i++)
digitalWrite(i, HIGH);
delay(t);
digitalWrite(i+1, HIGH);
delay(t);
digitalWrite(i+2, HIGH);
delay(t);
digitalWrite(i, LOW);
delay(t);
digitalWrite(i+1, LOW);

}
//<<<---------------- for this side

for(int i=13; i>1; i--)

digitalWrite(i, HIGH);
delay(t);
digitalWrite(i-1, HIGH);
delay(t);
digitalWrite(i-2, HIGH);
delay(t);
digitalWrite(i, LOW);
delay(t);
digitalWrite(i-1, LOW);

// Faite par steve fontaine 2020)


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ZoolanderMicro
(@zoolandermicro)
Trusted Member
Joined: 3 months ago
Posts: 81
2020-10-08 11:23 pm  

Hi SFEpoxy2020, try my code. Just change the pin numbers in the array to the pins of your board. 

/*
* Sketch SuperCylon displays a scanning pattern across an
* array of 16 LEDs. This scetch is written for the
* ATtiny2313 and ATtiny4313 microcontrollers.
* Written in Arduino C, composed and complied in the Arduino IDE.
* Uploaded to targetchip using a USBtiny programmer. Sketch uses
* 840 bytes of program storage. Glabal variables use 27 bytes
* out of maximum of 256 bytes.
* @author Mike Tonge (ZoolanderMicro)
* @date 9/8/2020
*/
#define DELAY_TIME 10 // Time in miliseconds. Change to suit.
// Initialize aray with Arduino digital pin numbers
uint8_t ledPins[] = {0, 1, 2, 3, 4, 5,6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
const int MIN_COUNT = 0; // First aray element is index 0
// Scale value to index of last aray element
const int MAX_COUNT = sizeof(ledPins) - 1;

void setup() {

for (int pin = MIN_COUNT; pin <= MAX_COUNT; pin++) {
pinMode(ledPins[pin], OUTPUT); // Initialize pins as output
digitalWrite(ledPins[pin], LOW); // Turn digital outputs off
}
}

void loop() {

static int index = 0; // Initialize loop control variable.
while (index < MAX_COUNT) { // Counts up from 0 to 15
digitalWrite(ledPins[index], HIGH); // Turn on led
delay(DELAY_TIME); // Wait a tick
digitalWrite(ledPins[index], LOW); // Turn off led
index = index + 1;
}
while (index > MIN_COUNT) { // Counts down from 16 to 1
digitalWrite(ledPins[index], HIGH); // Turn on led
delay(DELAY_TIME); // Wait a tick
digitalWrite(ledPins[index], LOW); // Turn off led
index = index - 1;
}
}

ZoolanderMicro, where small ideas are a big deal


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ZoolanderMicro
(@zoolandermicro)
Trusted Member
Joined: 3 months ago
Posts: 81
2020-10-08 11:46 pm  

Here are a couple of pinout charts for the Uno board and the 4313 chip that I used to run a Knight Rider display of 16 LEDs.

ZoolanderMicro, where small ideas are a big deal


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ZoolanderMicro
(@zoolandermicro)
Trusted Member
Joined: 3 months ago
Posts: 81
2020-10-08 11:48 pm  

Here is a link to my YouTube video of the breadboard circuit.

 

ZoolanderMicro, where small ideas are a big deal


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SFEpoxy2020
(@sfepoxy2020)
Active Member
Joined: 3 months ago
Posts: 5
2020-10-23 2:48 pm  

A big thanks to all that have been sending sketch's for me to try but right now I only have a arduino uno (clone) so I will try tthese out laters.

 


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SFEpoxy2020
(@sfepoxy2020)
Active Member
Joined: 3 months ago
Posts: 5
2020-10-23 2:57 pm  

@dronebot-workshop thanks again Bill, I am so not used to being on a forum, I am 40 years old and never tried this plus I am new to the whole arduino thing and I would need someone to teach me on how to code, that would be a good idea too to have a course that you might think on doing if you wish too. Since I have been only following you so far. 😛


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Pugwash
(@pugwash)
Noble Member
Joined: 1 year ago
Posts: 1008
2020-10-23 3:37 pm  

@sfepoxy2020

I put some sketches and setup description on my GitHub page, based on using two daisy-chained 74HC595 bit shifters. There are also a couple of other demo sketches for this setup. Hope you find this useful!

https://github.com/The-Black-Pig/74hc595


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