Alauda Projects

I2S Raspberry Interface (4)

By AP, 

            
More work today. Some wires got loose and I did some experiments with .asoundrc and ALSA settings. I added a 39 Ω ballast resistor on SDIN and SDOUT lines and put a ferrite core on both wires. The radio node works as expected, absolutely no issues with one exception, a periodic pop that is audible each second. Seems there is an issue due to an insufficient buffer, but I will explore that later.


		
		

                        
            

    


    




    
    

                        

                    

                        

                            
New radio node
By AP,  
Today I finalzied the designed for my new Raspberry Pi Zero-based radio node. Designed around SA818 and CM108B sound codec, will replace my old dead-bug style radio node that I used for so many years.


                            

                                
                                                                    
                            

                        

                    

                

                        

                    
                

            







			
		
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