HardLabs

Fall-Detect

twhunq·Fall-Detect·hardware/pcb/fall_detector.kicad_pcb

Fall-Detect PCB layout, top view — open source ESP32 board by twhunq

About the Fall-Detect PCB

Fall-Detect is an open source ESP32 PCB design by twhunq, published on GitHub. It is a 2-layer board measuring 60 × 50 mm, with 19 components from 16 distinct parts.

Its main chip is the ESP32-S3 SuperMini, from the ESP32 family. Other key parts include the GY-521 MPU6050 and TTP223 Touch. By type, the board carries 5 resistors, 4 capacitors, 3 ICs, 3 diodes, 1 transistor and 1 connector.

From the project

Project KiCad 10: sơ đồ nguyên lý, PCB 2 lớp 60 × 50 mm, file Gerber sẵn để đặt mạch.

Project KiCad 10: sơ đồ nguyên lý, PCB 2 lớp 60 × 50 mm, file Gerber sẵn để đặt mạch.

- Nguồn: pin Li-Po 3.7 V → module sạc TP4056 (loại có mạch bảo vệ) → J1 → công tắc SW1 → diode Schottky D2 1N5817 → chân 5V của SuperMini. Theo sơ đồ của Nologo, chân 5V nối thẳng VBUS của cổng USB-C và đầu vào LDO ME6217C33 (800 mA) → 3V3. D2 ngăn dòng 5V từ cổng USB-C của SuperMini chảy ngược vào pin khi đang nạp code, và chặn luôn trường hợp cắm ngược cực pin. - Đo pin: cầu phân áp R4/R5 100k + C4 100nF → GPIO1. Vpin = Vadc × 2. - MPU6050 (GY-521): I2C, AD0 nối GND → địa chỉ 0x68. GY-521 có sẵn điện trở…

Fall-Detect, from the project README
From the project README

Main components on the Fall-Detect

ESP32-S3 SuperMiniGY-521 MPU6050TTP223 Touch

Fall-Detect bill of materials (BOM)

19 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3 SuperMini
U1
1
GY-521 MPU6050
U2
1
TTP223 Touch
U3
1
S8050
Q1
1
BAT (TP4056 OUT)
J1
1
Buzzer 3V (active)
BZ1
1
SS12D00 PWR
SW1
1
1N4148
D1
1
1N5817
D2
1
LED 5mm Red
D3
1
100uF 16V
C1
3
100NF
100nF
C2, C3, C4
1
1k
R1
1
10K
10k
R2
1
330
R3
2
100K
100k
R4, R5

Fall-Detect design files

The KiCad project lives in the twhunq/Fall-Detect repository on GitHub; these links point at the commit this page was built from.

Fall-Detect: common questions

What microcontroller does the Fall-Detect use?

The Fall-Detect is built around the ESP32-S3 SuperMini, from the ESP32 family.

How big is the Fall-Detect PCB?

The Fall-Detect measures 60 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fall-Detect?

19 components, from 16 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 Fall-Detect design files?

From the twhunq/Fall-Detect repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Fall-Detect design in my own project?

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

Can I test firmware for the Fall-Detect 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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