HardLabs

TRacket sensor

CivicTechTO·tRacket-sensor·hardware/pcb-rev3/noisemeter.kicad_pcb

TRacket sensor PCB layout, top view — open source ESP32 board by CivicTechTO
Simulate this board

About the TRacket sensor PCB

TRacket sensor is an open source ESP32 PCB design by CivicTechTO, published on GitHub. It is a 2-layer board measuring 44 × 31 mm, with 17 components from 14 distinct parts.

Its main chip is the ESP32-C3-MINI-1-N4, from the ESP32 family. Other key parts include the AP2112K-3.3TRG1 and USBLC6-2SC6. By type, the board carries 7 capacitors, 3 ICs, 2 diodes, 2 resistors, 1 connector and 1 microphone.

It belongs with the sensors designs in this gallery.

From the project

Design files and source code for the tRacket noise sensor

This repository contains all source code and hardware design files for the tRacket noise sensor.

Environmental noise, especially in urban settings, is a known public health concern:

The tRacket noise sensor continuous monitors ambient sound levels (in decibels, dBA) and sends these measurements to an online dashboard (also on GitHub). Our goal is to help local communities better understand the sound levels and extreme noise events that they experience day to day.

Main components on the TRacket sensor

AP2112K-3.3TRG1ESP32-C3-MINI-1-N4USBLC6-2SC6

TRacket sensor bill of materials (BOM)

17 components, 14 distinct parts.

QtyPartRefs
1
AP2112K-3.3TRG1
AP2112K-3.3
U1
1
ESP32-C3-MINI-1-N4
U2
1
USBLC6-2SC6
U3
1
0473460001
USB_B_Micro
J1
1
SPH0645LM4H-B
MK1
1
EVQ-P7A01P
SW_Push
SW1
1
APT1608LVBC/D
LED
D1
1
ESD5Z3.3T5G
D2
3
CC0603KRX7R7BB105
1uF
C1, C2, C3
1
CL21A106KOQNNNE
10uF
C4
2
CC0603KRX7R6BB104
0.1uF
C5, C6
1
CL10B201KB8NNNC
200pF
C7
1
RC0603JR-0751RL
51
R8
1
CAY16-103J4LF
10k
RN1

TRacket sensor design files

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

TRacket sensor: common questions

What microcontroller does the TRacket sensor use?

The TRacket sensor is built around the ESP32-C3-MINI-1-N4, from the ESP32 family.

How big is the TRacket sensor PCB?

The TRacket sensor measures 44 × 31 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TRacket sensor?

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

Where can I download the TRacket sensor design files?

From the CivicTechTO/tRacket-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 TRacket sensor design in my own project?

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

Can I test firmware for the TRacket sensor 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.

Similar boards