7 segment LED clock based on the Atmega328AU microcontroller and WS2812 addressable LEDs. The LED clock circuit contains such nodes as: an ATmega328AU command microcontroller, a DS3231 real-time microcircuit, touch-sensitive buttons based on the TTP223-BA6 microcircuit and WS2812 addressable LEDs.

7 segment LED clock based on the Atmega328AU microcontroller and WS2812 addressable LEDs. The LED clock circuit contains such nodes as: an ATmega328AU command microcontroller, a DS3231 real-time microcircuit, touch-sensitive buttons based on the TTP223-BA6 microcircuit and WS2812 addressable LEDs.

AR glasses

AR glasses

An Arduino based LED Tester with LCD. Select the current and the destination voltage (your battery), connect the LED to the tester and get the needed value for a serial connected Resistor. You can also see the measured values for the LED (forward voltage and current). Based on the idea of https://jaycar.com.au

An Arduino based LED Tester with LCD. Select the current and the destination voltage (your battery), connect the LED to the tester and get the needed value for a serial connected Resistor. You can also see the measured values for the LED (forward voltage and current). Based on the idea of https://jaycar.com.au

ESP32 SPI TFT shield Проект ESP32 SPI TFT шилда

ESP32 SPI TFT shield Проект ESP32 SPI TFT шилда

Controller for my IV-25 Display Module

Controller for my IV-25 Display Module

Mitsubishi Lv16-RV Fan Work with Home Assistant.

Mitsubishi Lv16-RV Fan Work with Home Assistant.

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This post shows how to design and build a compact modified sine wave inverter that has all the necessary safety features to ensure stable and long operation. Because the inverter is software controlled, many other functions and voltage inputs can be enabled. One unique thing about this inverter is that it contains a tap changer, which makes it possible to switch taps to suit different input and output voltages, such as an inverter with a selectable output voltage of 110 or 220V.

This post shows how to design and build a compact modified sine wave inverter that has all the necessary safety features to ensure stable and long operation. Because the inverter is software controlled, many other functions and voltage inputs can be enabled. One unique thing about this inverter is that it contains a tap changer, which makes it possible to switch taps to suit different input and output voltages, such as an inverter with a selectable output voltage of 110 or 220V.

Stand-alone Oscillator Calibrator and High-Voltage Fuse Resetter for 8-Pin ATtinys

Stand-alone Oscillator Calibrator and High-Voltage Fuse Resetter for 8-Pin ATtinys

ESP32 based weather station - does NOT include the solar-powered part of the solution - which is done with the help of another board.

ESP32 based weather station - does NOT include the solar-powered part of the solution - which is done with the help of another board.

Simple Tachometer (RPM-Meter)

Simple Tachometer (RPM-Meter)

Single-Cell Li-ion Battery Charger with selectable Current Limit and OLED Display

Single-Cell Li-ion Battery Charger with selectable Current Limit and OLED Display

USB Phone Charge Guard controls and monitors charging of phones and other devices in order to extend battery life

USB Phone Charge Guard controls and monitors charging of phones and other devices in order to extend battery life

Control almost any number of NeoPixels with an IR Remote

Control almost any number of NeoPixels with an IR Remote

Breadboard friendly dev board for ATmega328P-PU

Breadboard friendly dev board for ATmega328P-PU

T12 Quick Heating Soldering Station based on ATmega328P

T12 Quick Heating Soldering Station based on ATmega328P

ESP32-S2 Minimal Dev Board V2 Breadboard friendly minimal breakout board for ESP32-S2 Wrover or Wroom

ESP32-S2 Minimal Dev Board V2 Breadboard friendly minimal breakout board for ESP32-S2 Wrover or Wroom

Simple 5V/2.5A Uninterruptible Power Supply (UPS) for RaspberryPi and other Devices

Simple 5V/2.5A Uninterruptible Power Supply (UPS) for RaspberryPi and other Devices

Simple USB-C Power Delivery Tester with OLED Display

Simple USB-C Power Delivery Tester with OLED Display

Programmable Electronic Constant Current Dummy Load with USB Interface

Programmable Electronic Constant Current Dummy Load with USB Interface

Multi test shield

Multi test shield

Tiny handheld gaming device based on ATtiny85

Tiny handheld gaming device based on ATtiny85

ESP-12F Current Logger (INA226)

ESP-12F Current Logger (INA226)

Cassette interface card for Altair 8800 Simulator I/O Bus

Cassette interface card for Altair 8800 Simulator I/O Bus

C64 Tape Emulator with SD-Card Adapter and Cassette Port Plug

C64 Tape Emulator with SD-Card Adapter and Cassette Port Plug