Published © MIT

UltraSonic Liquid Level Controller

A Simple ultrasonic liquid level controller based on STM32 microcontroller

AdvancedFull instructions provided10 hours632
UltraSonic Liquid Level Controller

Things used in this project

Hardware components

STMicroelectronics STM32F030K6
×1
Alphanumeric LCD, 20 x 4
Alphanumeric LCD, 20 x 4
×1
JSN-SR04T Ultrasonic Module
×1
HLK-PM12
AC 110-240V To DC 12V AC-DC Isolated Switching Power Supply Module
×1
MINMAX MA03-12S09
isolated 3W DC/DC-converter
×1
Relay SPDT Sealed - 10A
×1
Tactile Switch
×6
BC547 NPN Transistor
×1
PC817 Transistor Output Optocoupler
×1
Texas Instruments TL7705 SUPERVISOR IC
×1
Texas Instruments LM1117-5Volt Regulator
×1
Texas Instruments LM1117-3.3Volt Regulator
×1
3 mm LED: Green
3 mm LED: Green
×2
1N4007 – High Voltage, High Current Rated Diode
1N4007 – High Voltage, High Current Rated Diode
×1
SMLVT3V3 TVS Diode
×1
8 MHz Crystal
8 MHz Crystal
×1
MOV-07D391K Varistor
×2
Ceramic Disc Capacitor, 18 pF
Ceramic Disc Capacitor, 18 pF
×2
10nF Film Capacitor
×1
Capacitor 100 nF
Capacitor 100 nF
×4
Electrolytic Capacitor, 0.1 µF
Electrolytic Capacitor, 0.1 µF
×1
Capacitor 10 µF
Capacitor 10 µF
×2
Capacitor 22 µF
Capacitor 22 µF
×1
Capacitor 220 µF
Capacitor 220 µF
×1
1 A, 250 V Fuse
×1
Ferrite Bead
Ferrite Bead
×2
Male Header 40 Position 1 Row (0.1")
Male Header 40 Position 1 Row (0.1")
×1
IDC Connector - Female - 2 Row, 10 Contacts
×1
IDC Connector - Male - 2 Row, 10 Contacts
×1
Trimmer Potentiometers
×1
Through Hole Resistor, 2.2 kohm
Through Hole Resistor, 2.2 kohm
×1
Resistor 1k ohm
Resistor 1k ohm
×1
Resistor 220 ohm
Resistor 220 ohm
×1
Resistor 10k ohm
Resistor 10k ohm
×1
Through Hole Resistor, 39 ohm
Through Hole Resistor, 39 ohm
×1
Pluggable Terminal Block, 2 Positions
×1
Pluggable Terminal Block, 3 Positions
×1

Software apps and online services

STMicroelectronics STM32CubeIDE
Integrated Development Environment for STM32

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)

Story

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Schematics

LCD Board

Control Board

Code

Code in STM32CubeIDE

Credits

Comments