Alauda Projects

KiCad Templates for Orange Pi Zero

By AP, 

            
KiCad templates for two different hat models for Orange Pi Zero boards can be downloaded from my GitHub repo. Two different KiCad templates can be downloaded in the same GitHub archive: one uncut, 46×48 mm exactly same size as Orange Pi Zero; the other one has some cuts for network and USB connector, to accomodate 13-pin headers with shorter isolation (like 8-ish mm ones). See images below.


Orange Pi Zero Hat KiCad Templates


		
		


 

                


    





    
    

                        

                    

                        

                            
Genetic algorithm mutation coded in Python
By AP,  
This example is adapted from Clinton Sheppard’s excellent book “Genetic Algorithms with Python“, a book that I encourage you to buy and read. The very simple example shows how easy is to design in Python a simple mutation algorithm that merges to the optimal solution in 24 iterations. The example below uses romanian language accents […]


                            

                                
                                                                    
                            

                        

                    

                

                        

                    

                        

                            
LTSpice simulation of Baofeng UV5R band selector
By AP,  
I was quite busy the other day trying to understand how Baofeng is using RDA1846 transceiver in their products. While analyzing the schematic it struck me the overcomplicated way they do the switch between UHF and VHF. This is an excerpt of the schematic: The entire selector block is made up with discrete components ! […]


                            

                                
                                                                    
                            

                        

                    

                

            







			
		
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Build SvxLink on Raspberry — aide-mémoire
By AP,  
                        

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This is not really a post, but mostly a reminder with some information to help me remember the steps. Meanwhile I wrote a much more extensive documentation here, on my wiki (in romanian). And I think I also made a video tutorial but I have to upload it to YouTube. Load packages sudo apt update […]