|  |  | @ -136,6 +136,9 @@ Test the prototype. | 
			
		
	
		
		
			
				
					
					|  |  |  |         will prevent ESP32 from booting |  |  |  |         will prevent ESP32 from booting | 
			
		
	
		
		
			
				
					
					|  |  |  |     [ ] ESP-32: won't boot when SD connected. Don't solder it at PCB v1.7 |  |  |  |     [ ] ESP-32: won't boot when SD connected. Don't solder it at PCB v1.7 | 
			
		
	
		
		
			
				
					
					|  |  |  |         it should be routed differently in newer release |  |  |  |         it should be routed differently in newer release | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         Here is a possible SD card connection | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         Arduino->Examples->ESP32->SD_MMC_Test | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         https://github.com/espressif/esp-idf/blob/master/examples/storage/sd_card/README.md | 
			
		
	
		
		
			
				
					
					|  |  |  |     [x] I2C resistors increased 470->2.2k |  |  |  |     [x] I2C resistors increased 470->2.2k | 
			
		
	
		
		
			
				
					
					|  |  |  |     [ ] GPDI series C=100nF to each differential line. |  |  |  |     [ ] GPDI series C=100nF to each differential line. | 
			
		
	
		
		
			
				
					
					|  |  |  |     [x] reliable shutdown (D11=RED LED, R4=4.7k) |  |  |  |     [x] reliable shutdown (D11=RED LED, R4=4.7k) | 
			
		
	
	
		
		
			
				
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