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Esp32 sensornode

rmd6502·envirosense·esp32_sensornode/esp32_sensornode.kicad_pcb

Esp32 sensornode PCB layout, top view — open source ESP32 board by rmd6502

About the Esp32 sensornode PCB

Esp32 sensornode is an open source ESP32 PCB design by rmd6502, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 70 × 33 mm, with 35 components from 23 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the BME280, BQ24075, CH330N, LM1117-3.3 and TPS3839DBZ. By type, the board carries 12 resistors, 7 connectors, 6 ICs, 5 transistors and 5 capacitors.

From the project

Crowdsourced Environmental Sensing

The pm (particulate measure) depends on Paul Van Haastrecht's SPS30 library at https://github.com/paulvha/sps30. Sensirion's library doesn't work, though I imagine they'll fix that.

Esp32 sensornode, from the project README
From the project README

Main components on the Esp32 sensornode

ESP32-WROOM-32BME280BQ24075CH330NLM1117-3.3TPS3839DBZ

Esp32 sensornode bill of materials (BOM)

35 components, 23 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32
U1
1
BME280
U2
1
BQ24075
U3
1
CH330N
U4
1
LM1117-3.3
U5
1
TPS3839DBZ
U6
3
NDS3332P
Q1, Q2, Q3
1
MMDT2222A
Q4
1
MMBT2222A
Q5
1
Conn_01x06_Female
J1
1
Conn_01x07_Male
J2
1
Micro_SD_Card
J3
1
USB_B_Mini
J4
1
Conn_01x02_Male
J5
2
Conn_02x03_Odd_Even
J6, J7
2
2.2u 10v
C1, C4
1
10u 10v
C2
1
2.2u 5v
C3
1
10u 5v
C5
3
220R
R1, R2, R11
Show 3 more
QtyPartRefs
7
10k
R3, R4, R7, R8, R9, R10, R12
1
1.18k
R5
1
1.13k
R6

Esp32 sensornode design files

The KiCad project lives in the rmd6502/envirosense repository on GitHub; these links point at the commit this page was built from.

Esp32 sensornode: common questions

What microcontroller does the Esp32 sensornode use?

The Esp32 sensornode is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Esp32 sensornode PCB?

The Esp32 sensornode measures 70 × 33 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Esp32 sensornode?

35 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Esp32 sensornode design files?

From the rmd6502/envirosense repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Esp32 sensornode design in my own project?

Yes, under the terms of its Apache-2.0 license, which rmd6502 chose for the repository.

Can I test firmware for the Esp32 sensornode without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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