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CERN Open Hardware License

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ESP8266 Sensor Board

1 year ago 953
  • Description
  • Documents
  • 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 Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted LCSC
1 MCP1700T-3302E/TT U2 SOT-23(SOT-23-3) 1 MCP1700T-3302E/TT MICROCHIP LCSC Yes C39051
2 1uF C1,C2 0603 2 Yes
3 TPL5111 U1 SOT23-6 1 RS-Online Yes
4 22uf C3 0603 1 Yes
5 120k R1 0603 1 Yes
6 TACTILE SWITCH SW1 SWITCH-4X4X1.5_SMD 1 SWITCH-4x4x1.5_SMD BBJ LCSC Yes C19636
7 AO3400A Q1,Q2,Q5 SOT-23(SOT-23-3) 3 AO3400A AOS LCSC Yes Yes C20917
8 JUMPER-3 JP1,JP2 SJ_3 2 Yes
9 74LVC1G86GW U3 SOT-353 1 74LVC1G86GW,125 NXP LCSC Yes C12513
10 22uF C4 0603 1 Yes
11 10k R2,R3,R4,R5,R6,R7,R8,R10,R11,R13 0603 10 Yes
12 ESP-12F(ESP8266MOD) U4 ESP-12F 1 ESP-12F(ESP8266MOD) Ai-Thinker LCSC Yes C82891
13 AO3401A Q3,Q4 SOT-23(SOT-23-3) 2 AO3401A AOS LCSC Yes Yes C15127
14 33k R9 0603 1 Yes
15 GPIO0 SW2 SWITCH-4X4X1.5_SMD 1 SWITCH-4x4x1.5_SMD BBJ LCSC Yes C19636
16 4k7 R12 0603 1 Yes
17 Spare Pins P5 HEADER 1X6 2.54 OVAL PADS 1 Header 1x6 2.54 square pads Yes
18 Battery Input P1 HEADER 1X2 2.54 OVAL PADS 1 Header 1x2 2.54 Oval Pads Yes
19 Sensor Input P2 HEADER 1X3 2.54 OVAL PADS 1 Header 1x3 2.54 Oval Pads Yes
20 DS18B20 P3 HEADER 1X3 2.54 OVAL PADS 1 Header 1x3 2.54 Oval Pads Yes
21 Programming Pins P4 HEADER 1X4 2.54 OVAL PADS 1 Header 1x4 2.54 Oval Pads Yes

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