The LDR Sensor also know as the Photo-resistor is basically a simple sensor that its resistance value changes with light. (resistance will lower with more light.) The LDR isn’t very precise, so you can not get a LUX reading but it is good enough to tell the difference between light and shadow. It …

LDR Sensor with Arduino Read more »

Making a Digital clock with Arduino boards.  (ماژول ساعت DS1307) Components • Arduino board • DS1307 RTC Module  I2C (SDA and SCL) • TM1637 7-segment I2C (CLK and DIO) The DS1307 uses I2C Protocol to communicate with arduino. There are a lot of examples on the Web to show how to use …

DS1307 & TM1637 with Arduino Read more »

I’m using BK8000L Bluetooth module (SBC audio decoding performance) and as amplifier the PAM8403  board. (but you can use any other amplifier for example from you old PC speaker) Problem with feedback and noise If  we want to power the both devices from the same power supply, It will get a lot …

Make a Bluetooth speaker Read more »