2021-Current voltmeter-Hangshun chip

Introduction: Current and voltmeter, powered by battery, can set protection voltage and current. Using HK32F030F4P6.

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[Shenzhen University Electronic Competition] Thermal imaging camera face following thermometer

Introduction: A human body temperature detection system uses C8T6 microcontroller and AMG8833 to implement body temperature detection. Openmv performs image processing to implement face tracking and non-contact body temperature measurement. It is displayed on the LCD screen and triggers an alarm when the predetermined temperature is exceeded. Won the second prize in the school selection competition

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uln2003 solder paste dispenser

Introduction: This is an electric solder paste dispenser used for welding SMT boards to temporarily replace the expensive steel mesh fee during small projects.

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T12+858D

Introduction: T12+858D two-in-one, soldering iron + air gun tool

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RDR-736 - 7W wide-range input, dual output, non-isolated flyback converter using LinkSwitch-XT2 900 V

7 W Wide-Range Input, Dual Output, Non-Isolated Flyback Converter Using LinkSwitch-XT2 900 V (LNK3696P)

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DER-711 - 6.6 W wide-range input, dual output, isolated flyback converter for magnetic interference immunity in utility meters using LinkSwitch-XT2 900 V

6.6 W wide-range input, dual output, isolated flyback converter for anti-magnetizing interference in utility meters using 900 V LinkSwitch-XT2 (LNK3696P)

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DER-879 - 10W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signal and X capacitor discharge losslessly

10 W isolated flyback power supply with lossless generation of AC zero-crossing signal and X capacitor discharge using LinkSwitch-TNZ (LNK3317D)

Schematic PCB

RDR-877 - 6W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signals losslessly

6 W isolated flyback power supply with lossless generation of AC zero-crossing signal using LinkSwitch-TNZ (LNK3306D)

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RDR-737 - 1.44W non-isolated buck converter using LinkSwitch-TN2 900V

1.44 W Non-Isolated Buck Converter Using LinkSwitch-TN2 900 V (LNK3294G/P)

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DI-164 - 1W, low-cost, linear replacement power supply that eliminates the need for input electrolytic capacitors

DI-164 - 1 W, Low Cost, Linear Replacement Power SupplyEliminates Need For Input Electrolytic Capacitor

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DER-931 - 72 W industrial/home appliance power supply using InnoSwitch4-CZ, ClampZero and MinE-CAP

72 W ultra-compact charger/adapter for appliances and industrial applications

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RDR-641 - 40 W variable output (3 V to 8 V, 5 A; 8 V - 20 V constant supply) power supply for PIC16F18325 microcontroller using InnoSwitch3-Pro and Microchip

This document is an engineering report describing a 5 A CV/CC charger (3 V to 8 V range), which switches to constant power in the 8 V to 20 V range using the InnoSwitch3-Pro and Microchip’s PIC16F18325 microcontroller. PIC16F18325 controls the InnoSwitch3-Pro via an I2C interface, programming its COMMAND and telemetry registers. This design shows the high power density and efficiency that is possible from the high level of integration in the InnoSwitch3-Pro controller. The report contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.

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DER-712 - 60W ultra-wide input range adapter using InnoSwitch3-EP PowiGaN and MinE-CAP

60 W isolated flyback adapter with StackFET™ using MinE-CAP ICs to achieve the highest possible power density and design simplicity

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Quark: ESP32-based electronic measurement and debugging tool

Quark based on ESP32 is an open source electronic tool that integrates electronic measurement probes and debugging tools. It has a wireless connection function and can be connected to APP.

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tCam-Mini: Wireless thermal imaging camera based on ESP32

tCam-Mini is a small wireless thermal camera designed and developed by Dan Julio based on ESP32, which allows users to easily obtain and use radiation data through the Flir Lepton 3.5 sensor. It can obtain the temperature of each pixel and perform various types of thermal imaging analysis; it can also convert the data into color images to display the temperature and shape of the human body through thermal imaging.

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Jlink V9 DIY High Speed ​​SWD

The Jlink OB made by F072 has a maximum speed of 3000kHz, and the Jlink V9 has a maximum speed of 12000kHz.

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ADI’s open source oscilloscope ADALM2000

ADALM2000 is a 9-in-1 portable test and measurement instrument launched by ADI.

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ScopeFun: Open source oscilloscope

ScopeFun is an open source all-in-one instrumentation platform. It includes oscilloscopes, arbitrary waveform generators, spectrum analyzers, logic analyzers and digital pattern generators.

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Mini-DSO - a low-cost simple oscilloscope

A simple oscilloscope made of STC8A8K MCU. The microcontroller uses STC8A8K64S4A12 working at 27MHz. The display uses a 0.96 OLED with a resolution of 128x64. This oscilloscope project is easy to start and covers the necessary measurement functions. Supports normal mode, single mode, and automatic mode. It has trigger mode selection, such as level trigger, and comes with saved settings. Mini-DSO input is single-channel mode, and the second/division size can support a variety of: 500ms, 200ms, 100ms, 50ms, 20ms, 10ms, 5ms, 2ms, 1ms, 500us, 200us, 100us, and the voltage acquisition range is 0 to 30V. The sampling rate can reach 250kHz@100us/div.

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Frequency Probe - an ultra-miniature frequency probe

An ultra-mini frequency probe designed by foreign expert David Johnson. This frequency probe can help you debug the circuit by displaying frequency and voltage. It can measure periodic waveforms from 1Hz to 5MHz with an accuracy of 0.3%. Of course, it can also be used as a voltmeter. Use it to tell you the current voltage value.

Schematic PCB