29 lines
671 B
Plaintext
29 lines
671 B
Plaintext
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Datasheet:
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https://www.espressif.com/sites/default/files/documentation/0a-esp8266ex_datasheet_en.pdf
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Tech Reference:
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https://www.espressif.com/sites/default/files/documentation/esp8266-technical_reference_en.pdf
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PCB Design Guidelines:
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https://www.espressif.com/sites/default/files/documentation/esp8266_hardware_design_guidelines_en.pdf
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Pins
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====
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Multiplexing analog input:
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https://internetofhomethings.com/homethings/?p=530
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Digital:
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- has hysterisis
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- Vil = 0.25 * Vin
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- Vih = 0.75 * Vin
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ADC:
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- only 1 analog pin, A0
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- 10 bits, 0-1023
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- only supports 0.2 - 1.2 V, unless there's on-board voltage divider
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WeMos D1 Mini
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=============
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- has on board 3V3 ADC divider
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