HardLabs

ULP-Weather-Logger

hamityanik·ULP-Weather-Logger·KiCAD-design-files/board.kicad_pcb

ULP-Weather-Logger PCB layout, top view — open source ESP8266 board by hamityanik

About the ULP-Weather-Logger PCB

ULP-Weather-Logger is an open source ESP8266 PCB design by hamityanik, published on GitHub under the MIT license. It is a 2-layer board measuring 37 × 66 mm, with 49 components from 29 distinct parts.

Its main chip is the ESP8266-ESP-03, from the ESP8266 family. Other key parts include the TPS61025, TPL5111, MCP3021, HDC1080 and LPS25HB. By type, the board carries 20 resistors, 11 capacitors, 8 ICs, 3 switches, 2 battery holders and 2 diodes.

It belongs with the sensors, iot & wireless and power & battery designs in this gallery.

From the project

Yet another ESP8266 (ESP-03) based ultra low power weather logger with 4 sensors

[](https://twitter.com/hamityanik) (@hamityanik)

ULP-Weather-Logger, from the project README
From the project README

Main components on the ULP-Weather-Logger

TPS61025ESP8266-ESP-03TPL5111MCP3021HDC1080LPS25HBVEML6070TSL2561

ULP-Weather-Logger bill of materials (BOM)

49 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS61025
IC1
1
ESP8266-ESP-03
U1
1
TPL5111
U2
1
MCP3021
U3
1
HDC1080
U4
1
LPS25HB
U5
1
VEML6070
U6
1
TSL2561
U7
1
CONN_01X04
P1
2
1015
BT1, BT2
1
JUMPER
JP2
3
PTS820 J15M SMTR LFS
SW1, SW2, SW3
2
LTST-C170KRKT
D1, D2
1
6.8uH
L1
1
10uF
C1
1
2.2uF
C2
1
100uF
C3
7
0.1uF
C4, C5, C6, C7, C8, C9, C10
1
DNP
C11
2
1k
R1, R20
Show 9 more
QtyPartRefs
3
0R
R2, R13, R14
1
140k
R3
1
174k
R4
7
10k
R5, R6, R7, R8, R9, R16, R18
1
1k
R10
1
390k
R11
2
DNP
R12, R15
1
270k
R17
1
1M
R19

ULP-Weather-Logger design files

The KiCad project lives in the hamityanik/ULP-Weather-Logger repository on GitHub; these links point at the commit this page was built from.

ULP-Weather-Logger: common questions

What microcontroller does the ULP-Weather-Logger use?

The ULP-Weather-Logger is built around the ESP8266-ESP-03, from the ESP8266 family.

How big is the ULP-Weather-Logger PCB?

The ULP-Weather-Logger measures 37 × 66 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ULP-Weather-Logger?

49 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ULP-Weather-Logger design files?

From the hamityanik/ULP-Weather-Logger repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the ULP-Weather-Logger design in my own project?

Yes, under the terms of its MIT license, which hamityanik chose for the repository.

Can I test firmware for the ULP-Weather-Logger without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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