they make boards that program attiny

 

they make boards that program attiny


View attachment 327804

but does that program the bootloader too? from what i read some programmers only program the code i need it to programmed bootloader and code.

 

Hi tim,
Buy a simple Arduino Nano with the loader installed, most Nano's have the loader program pre-installed.

Then use the Arduino IDE to write your program directly to the Nano.
E

 

but does that program the bootloader too? from what i read some programmers only program the code i need it to programmed bootloader and code.

no... the IC socket is there to easily insert/remove IC.... but to use this IC need to already have boot loader. to load bootloader, chip must be programmed elsewhere (usually some programmer or arduino and breadboard). if you get version where chip is soldered, it would already have bootloader - maybe not version you expect but at least it is a start and you can flash it to a different firmware without additional hardware programmer.

 

programmer like this can be used to both flash firmware and to program.

 

I want it as small as I can, so if I can use a chip, that would be better.

there are smaller chips than ATTINY85...
for example
https://www.digikey.ca/en/products/...MIjZbYxprChwMVHhGtBh2BuRkMEAQYASABEgLkHPD_BwE

 

programmer like this can be used to both flash firmware and to program.
View attachment 327822

do you know what model/part number that programmer is?

 

This is the cheapest way to program a arduino

https://www.amazon.com/KEYESTUDIO-D...760155809-B08H1RB61B-&hvexpln=73&gad_source=1

 

but does that program the bootloader too? from what i read some programmers only program the code i need it to programmed bootloader and code.

I think the bootloader is already installed on the ATtiny85, that's why it can be programed in basic
It is installed on the Picaxe.

 

I think the bootloader is already installed on the ATtiny85, that's why it can be programed in basic
It is installed on the Picaxe.

hummm from what i read no?

 

This is the cheapest way to program a arduino

https://www.amazon.com/KEYESTUDIO-D...760155809-B08H1RB61B-&hvexpln=73&gad_source=1

I don't want to program a arduino i want to program the ttiny85 chip with bootloader

 

You are not getting it you can pull the chip and program a attiny leave the chip in and burn bootloader
the UNO as a programmer. there dirt cheap or get one of these
https://www.amazon.com/dp/B09921SC7...&s=pc&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw&th=1

20 dollar programmer
Or the UNO less then 10 dollars

#define ledPin 13  // Pin connected to the LED

unsigned long previousMillis = 0; // Variable to store the last time LED was updated
const long interval = 1000; // Interval at which to blink (milliseconds)
const long timerInterval = 1 * 60 * 1000; // 15 minutes in milliseconds 1 * 60 *

//bool ledState = LOW; // Initialize LED state

void setup() {
  pinMode(ledPin, OUTPUT); // Initialize the LED pin as an output
}

void loop() {
   digitalWrite(ledPin,LOW );
  unsigned long currentMillis = millis(); // Get the current time

  if (currentMillis - previousMillis >= timerInterval) {
    // It's time to toggle the LED
    previousMillis = currentMillis;
    digitalWrite(ledPin,HIGH);
    delay(interval); // Wait for 1 second
    digitalWrite(ledPin,LOW ); // Toggle the LED
    
  }
}

That code works I just tried it out

 

https://docs.arduino.cc/built-in-examples/arduino-isp/ArduinoISP/
how to
https://projecthub.arduino.cc/alaspuresujay/use-an-attiny85-with-arduino-ide-d847c5

 

You are not getting it you can pull the chip and program a attiny leave the chip in and burn bootloader
the UNO as a programmer. there dirt cheap or get one of these
https://www.amazon.com/dp/B09921SC7...&s=pc&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw&th=1

20 dollar programmer
Or the UNO less then 10 dollars

#define ledPin 13  // Pin connected to the LED

unsigned long previousMillis = 0; // Variable to store the last time LED was updated
const long interval = 1000; // Interval at which to blink (milliseconds)
const long timerInterval = 1 * 60 * 1000; // 15 minutes in milliseconds 1 * 60 *

//bool ledState = LOW; // Initialize LED state

void setup() {
  pinMode(ledPin, OUTPUT); // Initialize the LED pin as an output
}

void loop() {
   digitalWrite(ledPin,LOW );
  unsigned long currentMillis = millis(); // Get the current time

  if (currentMillis - previousMillis >= timerInterval) {
    // It's time to toggle the LED
    previousMillis = currentMillis;
    digitalWrite(ledPin,HIGH);
    delay(interval); // Wait for 1 second
    digitalWrite(ledPin,LOW ); // Toggle the LED
   
  }
}

That code works I just tried it out

ohh ok i see what you mean thanks

 

https://docs.arduino.cc/built-in-examples/arduino-isp/ArduinoISP/
how to
https://projecthub.arduino.cc/alaspuresujay/use-an-attiny85-with-arduino-ide-d847c5

this should also work for programming ttiny85 correct?
https://www.ebay.com/itm/2668780537...pytla9Ngm3ZXPyJKYZr+H2WV0=|tkp:Bk9SR5TQgr-dZA

 

Yes

 

Yes

ok thanks

 

Yes

if i get this to work...lol what would the wiring diagram be for the ttiny85 to wire it up for what i need?

 

Or you could do it with about $5 worth of CMOS IC devices and ZERO invested in programming devices, and if you needed to replace a damaged part in ten years it would still be available and you would not need to program it.

 

Hi

I have be playing around with 555 timers and I have on order cd4060. I am trying to make a timer that goes for one second a logic high or low ( selectable with switch) every 15 mins. I notice that 555 is not good for long time cycles. So I think a cd4060 would be better for this.

Sorry I don't want to mess around with MC, PIC, etc I don't want to learn programming.

Thanks

I'm sure someone has already mentioned that you can run a 555 as a 15 minute astable followed by another as a 1 second monostable and then something like a 74HC04 as an inverter (switched in or out depending on pulse. polarity required). You could also try the ALD7556 (if you can obtain these wherever you are), which provide better stability and longer time periods with smaller value components. Other than that C code is available for a precision delay timer for PIC, but yes you would have to mess with programming etc.