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ESP8266 Sensor Board copy

STDESP8266 Sensor Board copy

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CERN Open Hardware License

Creation time:2019-01-21 20:02:10Update time:2019-01-21 20:02:11

Description

This is a battery powered sensor board based on the ESP8266 (ESP-12F).
By using a TPL5111 chip the battery consumption can be reduced to about 1µA when the ESP is not enabled. When the TPL5111 chip receives 5V at it's wake up pin this will turn the ESP on by enabling the 3.3V voltage regulator. At this moment you can run any program you want. If you want to turn the ESP off again you have to drive the DONE pin from the TPL5111 high, this will disable the voltage regulator.

Design Drawing

schematic diagram
PCB

BOM

IDNameDesignatorFootprintQuantity
1MCP1700T-3302E/TTU2SOT-23(SOT-23-3)1
21uFC1,C206032
3TPL5111U1SOT23-61
422ufC306031
5120kR106031

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