![]() ![]() Because of the all library functions are in ESP32 is valid for Magicbit. We use PWM pulse to create the buzzer sound by using analogCwrite() function in the code. If those are equal, then buzzer and built in green LED in Magicbit will work during one minute. ![]() In the main loop always checks the current local time and alarm information are equal. Because if the alarm is on and when alarm time is equal to your current time while you setting up it, the alarm buzzer will ring. After set up the date and time turn on the alarm. Make sure turn off the alarm when you changing the alarm date and time. Also these links are you can use for further knowledge about NTP client.Īfter getting the local time correctly, we change our time showing texts and angle according to that time information in every loop.īy clicking the left and right buttons you can change the alarm date and time selection. There is simple example in Arduino( Arduino>Examples> ESP32> Time>simpletime) for you to learn about how this works further. Because then we calculate local time from inbuilt RC clock in ESP32. After we got the current local time we not longer used WIFI. gmtOffset means number of seconds you differ from the GMT.For most ares daylightOffset is 3600. The values of these variables are differ from region to region in the world. Then we should configure the gmtOffset and daylightOffset in variables in seconds. Therefor at the first stage we use WIFI for access the internet by providing SSID and password. For access internet we used inbuilt WIFI facility in the ESP32. In this method we use NTP (network time protocall ) client for gets the local time from internet. For that purpose you can use external RTC clock module or inbuilt RC clock in ESP32 in Magicbit. The most important part of the clock is how we get the local time accurately. You can change the analog clock position and text positions by changing parameters in the code.Īs like as clock screen we used text print function in the Adafruit GFX library for print numbers on OLED display at appropriate places. It helps to print other details (date, month and time show in digits) on display. There is also have text print function in Adafruit GFX library. The below picture describe how it is doing.Īccording coordinates we print hour and minute hand by draw lines. The angle measured with respect to line between center of the clock face and number 12 in clock face.Using sin and cos functions we can calculate the x and y coordinates of the ends of hour and minutes lines. for that we first converts the time to angle as follows. So we only input the angle which correspond to time for for rotate hands. Simple geometrical functions called sin and cos are use to the position of the clock hands. By using circle function and line function we create analog clock face. The clock screen has analog clock, digital clock, date, month and year texts.įor creating analog clock we use some graphics functions which are available in graphics library called Adafriut GFX. Lets talk about how does these graphic screens are working. ![]() ![]() To show the time and other details we used builtin OLED display in magicbit. These buttons are connected to 35(left button) and 34(right button) pins of the ESP32 in Magicbit.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |