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CERN Open Hardware License

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ESP8266 Sensor Board

2 years ago 1594
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  • BOM
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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.

Documents

ESP8266 Sensor Board

ESP8266 Sensor Board

BOM

id value quantity package components Manufacturer Part
1 MCP1700T-3302E/TT 1 SOT-23(SOT-23-3) U2 MCP1700T-3302E/TT
2 1uF 2 0603 C1,C2 ?
3 TPL5111 1 SOT23-6 U1 ?
4 0.1uf 1 0603 C3 ?
5 120k 1 0603 R1 ?
6 TACTILE SWITCH 1 SWITCH-4X4X1.5_SMD SW1 SWITCH-4x4x1.5_SMD
7 AO3400A 3 SOT-23(SOT-23-3) Q1,Q2,Q5 AO3400A
8 JUMPER-3 2 SJ_3 JP1,JP2 ?
9 74LVC1G86GW 1 SOT-353 U3 74LVC1G86GW,125
10 100nF 1 0603 C4 ?
11 10k 10 0603 R2,R3,R4,R5,R6,R7,R8,R10,R11,R13 ?
12 ESP-12F(ESP8266MOD) 1 ESP-12F U4 ESP-12F(ESP8266MOD)
13 AO3401A 2 SOT-23(SOT-23-3) Q3,Q4 AO3401A
14 33k 1 0603 R9 ?
15 GPIO0 1 SWITCH-4X4X1.5_SMD SW2 SWITCH-4x4x1.5_SMD
16 4k7 1 0603 R12 ?
17 Spare Pins 1 HEADER 1X6 2.54 OVAL PADS P5 Header 1x6 2.54 square pads
18 Battery Input 1 HEADER 1X2 2.54 OVAL PADS P1 Header 1x2 2.54 Oval Pads
19 Sensor Input 1 HEADER 1X3 2.54 OVAL PADS P2 Header 1x3 2.54 Oval Pads
20 DS18B20 1 HEADER 1X3 2.54 OVAL PADS P3 Header 1x3 2.54 Oval Pads
21 Programming Pins 1 HEADER 1X4 2.54 OVAL PADS P4 Header 1x4 2.54 Oval Pads

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