DIY Memo: ESP8266 v12 analog I/O

This is an amendment to the previous ESP8266v7 memo. More specifically, the I/O pins don't behave exactly as described by internet sources. A little bit of background: I was presented with a challenge to read from an analog sensor and send the reading through wifi network to the cloud. This can be accomplished easily using… Continue reading DIY Memo: ESP8266 v12 analog I/O

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DIY Memo: ESP8266 v7 hookup

Same story as the last time, but with ESP8266 v7 this time. This is the hook-up instruction for ESP-07 and how to capitalize on its GPIO pins. Things to know: - 3.3V power source - Default baud rate: 115200 (programmable at 9600) - R1, R2, R3, R4 are all 10K - C1 is 0.1 uF (ceramic… Continue reading DIY Memo: ESP8266 v7 hookup

DIY Memo: ESP8266 v1 hookup

Tonight marks the third time I forgot how to hook up this wifi module already, I might as well leave a memo here for my forgetful future self. This is the hookup instruction for ESP8266 v1 using CP2012 and Tera Term software Things to know: 3.3 VDC source RX and TX can accept 5V logic level without problems (so… Continue reading DIY Memo: ESP8266 v1 hookup