Home


Make a Bluetooth speaker

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…

Read More » Make a Bluetooth speaker

DCF77 Signal with Arduino

The DCF77 signal is a puls-signal with AM modulation with carrier frequency 77.5kHz. It has a small bandwidth. The carries include time and date information and will be transmitted in a simple binary-coded format by on-off modulation of the carriers.  (100ms/200ms)…

Read More » DCF77 Signal with Arduino

LDR Sensor with Arduino

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…

Read More » LDR Sensor with Arduino

1 2