![]() RTC slow SRAM: 8KB (for co-processor accessing during deep-sleep mode).RTC fas SRAM: 8 KB (for data storage and main CPU during RTC Boot from the deep-sleep mode).SRAM: 520 KB (for data and instructions).ROM: 448 KB (for booting and core functions).Processor: Tensilica Xtensa Dual-Core 32-bit LX6 microprocessor, running at 160 or 240 MHz.Bluetooth: BLE (Bluetooth Low Energy) and Bluetooth Classic.Wireless connectivity WiFi: 150.0 Mbps data rate with HT40.If you want to get a bit more technical and specific, you can take a look at the following detailed specifications of the ESP32 (source: )-for more details, check the datasheet): Compatible with MicroPython: you can program the ESP32 with MicroPython firmware, which is a re-implementation of Python 3 targeted for microcontrollers and embedded systems.Compatible with the Arduino “programming language”: those that are already familiar with programming the Arduino board, you’ll be happy to know that they can program the ESP32 in the Arduino style.Rich peripheral input/output interface-the ESP32 supports a wide variety of input (read data from the outside world) and output (to send commands/signals to the outside world) peripherals like capacitive touch, ADCs, DACs, UART, SPI, I2C, PWM, and much more.Dual-core: most ESP32 are dual-core- they come with 2 Xtensa 32-bit LX6 microprocessors: core 0 and core 1.Bluetooth: the ESP32 supports Bluetooth classic and Bluetooth Low Energy (BLE)-which is useful for a wide variety of IoT applications.Wi-Fi capabilities: the ESP32 can easily connect to a Wi-Fi network to connect to the internet (station mode), or create its own Wi-Fi wireless network ( access point mode) so other devices can connect to it-this is essential for IoT and Home Automation projects-you can have multiple devices communicating with each other using their Wi-Fi capabilities.Low-power: the ESP32 consumes very little power compared with other microcontrollers, and it supports low-power mode states like deep sleep to save power.Low-cost: you can get an ESP32 starting at $6, which makes it easily accessible to the general public.In demo mode, the clock faces change one by one at a certain time.Why are they so popular? Mainly because of the following features: ![]() In this mode, the selected time is counted, which can range from 1 to 60 minutes.Īnd finally comes the Demo mode. The next press is followed by countdown mode. Now with a long press of the button we enter the Alarm set mode. Next pressing the button we enter the display of the alarm. ![]() The flashing light indicates the setting mode in hours, minutes, and seconds. To set the correct time, hold down the button for more than two seconds. Standard clock with 3 dots red for hours, green minutes, blue for seconds Moving the rotary encoder left and right changes the faces of the clock: There are 6 different faces. ![]() 60 Leds WS2812 ring, made of Four Quarter circle neopixels with 15 LedsĪfter switching on, (with 3 short presses) we enter to clock face changing mode. The device is very simple to make and contains only a few components: I made only a small hardware modification to change the light intensity of the LEDs. The code is taken from the Open Source project "Rise and Shine LED Clock". The clock would need to be powered by a Power supply of 5V/3A or more. The physical housing for the desktop clock is based on the dimensions of the neopixel ring. The ring holder is made with a 3D printer and you can download the.
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