![20210812_111659|666x500, 50%](upload://dV4vgavgTGuHT6 [111] mlYTCKeH0BXCi.jpeg) Hello! Found and laundered a Soviet watch. For their operation, it is necessary to apply pulses of different polarity 24V alternately once a minute. There is arduino uno, module l298d, real time clock ds1307. Help w…

Your post was MOVED to its current location as it is more suitable. Could you also take a few moments to Learn How To Use The Forum . Other general help and troubleshooting advice can be found here. It will help you get the best out of the forum in the future.

[image] ivan_ivanovich: For their operation, it is necessary to apply pulses of different polarity 24V alternately once a minute. Hello Post a timing diagram.

/ SECONDARY CLOCK ARROW int IN1 = 8; // output for L293d int IN2 = 9; // output for L293d int button = 10; // output for the button setting void () { pinMode (button, INPUT); // configure the port as an input pinMode (IN1, OUTPUT); // configure the port as an output to l293d pinMode (IN2, OU…

[image] ivan_ivanovich: Help with the program. Write and test a function that makes the clock move one tick every time you press a button. Now call that function whenever the minutes register on the RTC is not what it was the last time you looked. Look, new minute sends the pulse, save the …

Thank you, the theory is clear to me. But I don't know how to implement this in the code. I'm new to this business. If you could show an example.

[image] ivan_ivanovich: But I don't know how to implement this in the code. Here's a function that runs the clock. If you could try it: [image] clockAgain.ino - Wokwi ESP32, STM32, Arduino Simulator Run IoT and embedded projects in your browser: ESP32, STM32, Arduino, Pi Pico, an…

You need to find a DS1307 library. Look at the examples that come with it. Fill in the parts that set up the device and read the minute and second. // SECONDARY CLOCK ARROW #include <DS1307.h> const byte IN1 = 8; // output for L293d const byte IN2 = 9; // output for L293d const byte button = 10; …

You really making extra sure about those output states, no problem. But you should add to setup() after you set the pin modes. a7

If it has to be driven at 24 volts and with alternating polarity, one option would be to use an H bridge motor drive chip such as the L293D. This can be interfaced to an Arduino. l293.pdf 390.55 KB

Secondary Clock ''СТРЕЛА" made in USSR

Projects General Guidance

UKHeliBob August 12, 2021, 10:33am 6

Please follow the advice given in the link below when posting code . Use code tags when posting code here to make it easier to read and copy for examination

Topic		Replies	Views
DS1307 not working General Guidance	38	508	April 3, 2026
Need help adjusting time on Seven Segment Display clock Programming	46	520	June 26, 2026
Horloge RTC ne compte pas le temps Français	29	409	July 20, 2026
Help with TM1637 6-digit And Button Programming	385	3255	January 7, 2026
I need some help with code for DS1307, please Programming	29	2381	December 14, 2017

Secondary Clock ''СТРЕЛА" made in USSR

Related topics