HardLabs

Indoor sensor

Djuke-DIYAudio·indoor-sensor·Design/Pcb/Releases/IndoorSensor-r2.kicad_pcb

Indoor sensor PCB layout, top view — open source ESP8266 board by Djuke-DIYAudio

About the Indoor sensor PCB

Indoor sensor is an open source ESP8266 PCB design by Djuke-DIYAudio, published on GitHub. It is a 2-layer board measuring 65 × 40 mm, with 14 components from 10 distinct parts.

Its main chip is the WeMos_D1_mini, from the ESP8266 family. Other key parts include the MH-Z19B and module_bme280. By type, the board carries 4 resistors, 3 ICs, 2 connectors, 2 switches, 2 capacitors and 1 diode.

It belongs with the sensors and iot & wireless designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

Affordable indoor sensor for measuring CO2, temperature, humidity and pressure

Possible use cases: Monitoring sensor values over time Switching of air ventilation based on CO2 or humidity level * Regulating room temperature (airco or heater)

MH-Z19 sensor for measuring CO2 ppm BME280 sensor for measuring temperature, humidity and pressure sensor ESP8266 module to easily integrate with WIFI in the smart home red/green dual LED for level indication - Green, PPM 1400 Connectors for optional 0.91 inch or 0.96 inch SSD1306 display Sales price around 25 euros

Main components on the Indoor sensor

WeMos_D1_miniMH-Z19Bmodule_bme280

Indoor sensor bill of materials (BOM)

14 components, 10 distinct parts.

QtyPartRefs
1
WeMos_D1_mini
U1
1
MH-Z19B
U2
1
module_bme280
U3
1
Conn_01x04_Pin
J1
1
Conn_01x06_Pin
J2
2
SW_Push
SW1, SW2
1
LED_Dual_AKA
D1
2
100n
C1, C2
2
220
R1, R2
2
4k7
R3, R4

Indoor sensor design files

The KiCad project lives in the Djuke-DIYAudio/indoor-sensor repository on GitHub; these links point at the commit this page was built from.

Indoor sensor: common questions

What microcontroller does the Indoor sensor use?

The Indoor sensor is built around the WeMos_D1_mini, from the ESP8266 family.

How big is the Indoor sensor PCB?

The Indoor sensor measures 65 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Indoor sensor?

14 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Indoor sensor design files?

From the Djuke-DIYAudio/indoor-sensor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Indoor sensor design in my own project?

The repository has no license, so all rights stay with Djuke-DIYAudio. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Indoor sensor 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.

Earlier revisions in the repo: IndoorSensor

Similar boards