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Alex Stepanov

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Two lines of 4 digits 7-segment display using ATMEGA328P chip (Arduino Uno) can be used as clock with external RTC or as general display.
ATMEGA328P 7-Segment Clock With Custom PCB V1
2.5K
My daughter got a toy flashlight. The flashlight was powered by five button batteries. Of cause batteries discharged quickly.
How to Convert Toy Flashlight to Rechargeable Flashlight
669
Arduino shield for 2WD smartcar
Arduino 2WD Smartcar Motor and Sensors Shield
847
This is custom 5x5cm Arduino UNO board that allows simple connection to HUB75 interface LED displays.
HUB75 LED Display Driver
27K
Regulated smart constant current charger for 9V NiMH rechargeable batteries.
Intelligent Charger for 9V NiMH Rechargeable Batteries V1
32K
Arduino based clock with illumination, temperature and humidity sensors using 16x32 RGB LED panel.
Arduino Based Clock Using 16x32 RGB LED Matrix
16K