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FallSensorSystem

RajatG·FallSensorSystem·hardware/fall_sensor.kicad_pcb

FallSensorSystem PCB layout, top view — open source ESP32 board by RajatG

About the FallSensorSystem PCB

FallSensorSystem is an open source ESP32 PCB design by RajatG, published on GitHub. It is a 2-layer board measuring 100 × 80 mm, with 21 components from 19 distinct parts.

Its main chip is the ESP32_DevKit_V1, from the ESP32 family. Other key parts include the Digispark_ATtiny85, MT3608_Module, TP4056_Module, LM393_Sound_Module and LoadSwitch_DBVT. By type, the board carries 7 ICs, 5 capacitors, 3 resistors, 2 switches, 1 battery holder and 1 diode.

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

From the project

Fall Sensor System: IoT Firmware (ESP32 C1001/LD2410 + ATtiny85), KiCad 10.0 PCB & Schematics, and Android Companion App

This directory contains the complete electronic schematic and PCB design files for the Fall Sensor System prototype (Rev A).

Board Dimensions: $100.00\text{ mm} \times 80.00\text{ mm}$ Layer Count: 2-Layer FR4 ($1.6\text{ mm}$ thickness, $1\text{ oz}$ / $35\mu\text{m}$ copper) Design Rule Status: 0 DRC Errors, 0 Unconnected Nets Power Architecture: Dual switched rails (Protected Li-Ion Battery $\rightarrow$ 5.0V Boost $\rightarrow$ 3.3V Step-Down). Radar Gating:** High-side/low-side N-Channel MOSFET load switch controlled via GPIO 27.

Main components on the FallSensorSystem

ESP32_DevKit_V1Digispark_ATtiny85MT3608_ModuleTP4056_ModuleLM393_Sound_ModuleLoadSwitch_DBVTBuck Converter

FallSensorSystem bill of materials (BOM)

21 components, 19 distinct parts.

QtyPartRefs
1
ESP32_DevKit_V1
U1
1
Digispark_ATtiny85
U2
1
MT3608_Module
U3
1
TP4056_Module
U4
1
LM393_Sound_Module
U5
1
LoadSwitch_DBVT
U6
1
Buck Converter
U7
1
BATTERY_PADS
BT1
1
AM312_PIR
PIR1
1
C1001_Radar
RADAR1
1
SYNC
SW1
1
LATCH_PWR
SW2
1
LED
D1
1
10u
C1
1
470u
C3
1
22u
C4
2
0.1u
C7, C8
2
100k
R1, R2
1
270
R3

FallSensorSystem design files

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

FallSensorSystem: common questions

What microcontroller does the FallSensorSystem use?

The FallSensorSystem is built around the ESP32_DevKit_V1, from the ESP32 family.

How big is the FallSensorSystem PCB?

The FallSensorSystem measures 100 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the FallSensorSystem?

21 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the FallSensorSystem design files?

From the RajatG/FallSensorSystem repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the FallSensorSystem design in my own project?

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

Can I test firmware for the FallSensorSystem 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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