ESP32 Seismometer

This seismometer is built using any ESP32 (I have used ESP32 Wroom).
It features a 2.8 inch ILI9341 TFT Display, ADS1115 16bit ADC, a coil/magnet vertical pendullum, visual and acoustic feedback via 7x WS2812 LEDS and 1 passive buzzer.
You can use a 4.5Hz geophone instead of the coil.

Pictures

Components

You will need the following components:

1x ESP32 Board
1x 2.8 Inch ILI9341 TFT Display
1x WS2812 slim led strip (you will only need to cut it to only 7 LEDs)
1x ADS1115 16Bit ADC

1x Passive Buzzer
1x spool of thin copper wire for soldering.
1x Soldering Iron
1x Solder

Esp32

2.8 inch ILI9341 TFT Display

ADS1115 16 Bit ADC

WS2812 Slim LED Strip

4.5Hz Geophone

You can use a 4.5Hz geophone or

You can build a vertical pendulum using:

1x Neodymium Cylinder Magnet
1x Copper wire Coil
1x Pendullum arm made of 4mm aluminum sheet
1x Steel leaf spring to suspend the pendullum


I'd suggest going the simple way, using the geophone.

Coils (Thinner the better)

Magnet

Aluminum sheets (Do not use steel)

Pinout

ESP32	ADS1115	Coil (or Geophone)	Buzzer	WS2812 LED	ILI9341 Display	Touch
3.3V	VDD				VCC
5V				LED (+)
GND	GND		SPEAKER (-)	LED (-)	GND	GND
4			SPEAKER (+)
5					RST
15					BL (Backlight)
16					DC
17					CS
18					SCK
19					MISO
21	SDA
22	SCL
23					MOSI
25				LED DATA
33						Touch CS
	A0	+
	A1	-