Part        Value      

R1          27                        
R2          27                        
R3          270                       
R4          270                       
R6          10k                       
R7          10k                       
R8          10k                       
R9          100k                      
R10         100k                      
R11         2k2                       
R12         270                       
R13         1k                        
R14         270                       
R15         10k                       
R16         2k2  

C0          10uF                      
C1          10uF                      
C2          100nF                     
C3          1uF                       
C4          100nF                     
C5          100nF                     
C6          1uF                       
C7          100nF                     
C8          1uF                       
C9          1uF                       
C10         1uF                       
C11         1uF                       
C12         100nF                     
C13         47pF                      
C14         47pF                      
C15         30pF                      
C16         30pF                      
C17         1uF   

Q1  

LED_COM                               
LED_RX                                
LED_TX                                
LED_STATUS                            
USB   

IC_DAC      MAX5480BCEE+21-0055H_16-L 
IC_PSU5V    LP2986IM-5.0_NOPB         
IC_USB      FT230XS                   
IC_SD_BUF   CD74HC4050M        

XTAL        20MHz