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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…

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DFPlayer and Arduino

DFplayer  module is quite small and looks good for little project. The module read only audios in MP3 and WAV formats and all audio files must be placed under /mp3 folder. It’s required that files are named like 0001.mp3, 0002.mp3…..0255.mp3…

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home assistant & eufy doorbell

Ich habe eine Homebase und eine eufyCam. Um es sauber in das Dashboard meines Heimassistenten zu integrieren, habe ich Folgendes getan. Meine Vorgehensweise: Die Eufy-Security-Integration über HACS heruntergeladen und HA neu gestartet. Das Add-on über den folgenden Link aus dem…

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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)…

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