Just use a counter. Count millis() and increment a minutes counter when it's time. If counter is between 0 and 19 minutes energize relay #1, else deenergize relay #1. If counter is between 20 and 39 minutes energize relay #2, else deenergize relay #2. Lather, rinse, repeat.
Hi dougp, yea, I figured it was something simple like that but I have soap in the eyes, ha ha, and, A) I have NO coding experience (least in theory of principles) and I have so much going on, I sadly dont have time to learn anything (just not enough time in the day). I have other things a little higher on the list I "have" to get done and I need to be careful cause I could start geeking out on this forum again and spend many a sleepless nights. Been there, done that back in 2014 on this site. was fun, but I paid for it, lol. Was hoping someone would have a script ready to go that was close I could deconstruct a little code here and there to make it work. I am pretty good with working on something thats already there, but cant come up with squat from scratch . But I see what you did there, I will add that to the clues, thank you.
qubits-us
Thank you, I will take a look at your script and see if I can do a little reverse engineering on that code, much appreciated.
Looks like I also need to do a little searching on "counters", as doug said, to find code. I was not sure what kind of circuit my request would fall into. More clues !!!
Don't make the mistake of trying to get the whole thing working at once. Put together a little bit of code to count millis(). Using that success increment a memory location called 'counter'. Now use counter as a variable in a compare statement. Use the compare result to turn on/off the relay. Building blocks.
Take a search engine of your choice and ask the WWW for ' LED sequencer / traffic lights ' to collect some data to be sorted out to get the needed information.
ah I think what you need is chatgpt. He loves explaining things and writing code for you. Not everything he does is even correct, and if you push him he'll just say that you are right, even if your wrong. But for somehting like this he can come up with something. hell lets see what he says:
const int numRelays = 6; // Total number of relays
const int relayPins[] = {2, 3, 4, 5, 6, 7}; // Pin numbers connected to relays
const unsigned long relayDelay = 20 * 60 * 1000; // Delay in milliseconds (20 minutes)
void setup() {
for (int i = 0; i < numRelays; i++) {
pinMode(relayPins[i], OUTPUT);
digitalWrite(relayPins[i], LOW); // Initialize relays as OFF
}
}
void loop() {
for (int i = 0; i < numRelays; i++) {
digitalWrite(relayPins[i], HIGH); // Turn on the current relay
delay(relayDelay); // Wait for the specified delay
digitalWrite(relayPins[i], LOW); // Turn off the current relay
delay(1000); // Small delay for stability
}
}
In this example, the Arduino sequentially turns on each relay, waits for the specified delay (20 minutes), turns off the current relay, and then moves on to the next relay. This loop continues indefinitely.
Please note that using the delay() function will block the entire program during the delay, so if you want to add more advanced functionality or responsiveness, you might consider using the millis() function for non-blocking timing.
Scaling Up: The code provided above is for 6 relays. If you want to scale up to a different number of relays, adjust the numRelays variable and the relayPins array accordingly.
Remember that safety is important when working with high-voltage circuits and relays. Ensure that you follow appropriate safety precautions and guidelines when setting up your circuit.
Keep in mind that this is a basic example to get you started. Depending on your exact requirements, you might need to fine-tune and expand the code to include error handling, manual control, or other features.
. But I see what you did there, I will add that to the clues, thank you.
!!!