Differences

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--- info:esp-12_pinout [2019/07/07 13:20] – 192.168.1.179
+++ info:esp-12_pinout [2019/11/20 07:28] (current) – 192.168.1.199
@@ Line 1: / Line 1: @@
+===== NodeMCU =====
+==== I2C ====
+I2C can be used to connect up to 127 nodes via a bus that only requires two data wires, known as SDA and SCL.\\
+SDA=4 => D2.\\
+SCL=5 => D1\\
+==== SPI ====
+SPI is much simpler than I2C. Master and slave are linked by three data wires, usually called MISO, (Master in, Slave out), MOSI (Master out, Slave in) and M-CLK.\\
+M-CLK => D5\\
+MISO => D6\\
+MOSI => D7\\
+(SPI Bus SS (CS)is D8.)\\
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