Proceedings of the Electronic Design Competition

The collection of papers from previous electronic design competitions includes design ideas, circuit diagrams and corresponding program flow charts for function signal generators, oscilloscopes, automatically controlled balancing cars, radios, etc.

Schematic PCB

Triggered voice time reporting system and voice recognition circuit

The system developed in this article is based on the existing triggered voice time reporting system, adding a speech recognition circuit, so that the developed system can have the function of dialogue response time reporting, and realize the truly automated and intelligent voice time reporting.

Schematic PCB

Schematic diagram of RTL8306 switch

Schematic diagram and pcb of RTL8306 switch, where the schematic diagram is orcad and the pcb is ad10.

Schematic PCB

Protues simulation example (8051)-PCF8574 application.rar

Protues simulation example (8051)-PCF8574 application.rar

Schematic PCB

CANable: A small, low-cost, open-source USB-to-CAN adapter based on stm32f0

CANable 2.0 is a small, low-cost, open-source USB to CAN adapter. CANable enumerates as a virtual serial port on your computer and acts as a serial line to CAN bus interface. Using the alternative candleLight firmware, CANable enumerates as a native CAN interface on Linux. CANable 2.0 supports standard CAN and CAN-FD.

The CANable adapter is compatible with ARM-based embedded platforms such as Raspberry Pi, Raspberry Pi Zero, ODROID, BeagleBone, etc., making it ideal for integration into OEM products.

Schematic PCB

Open source USB2.0 high-speed analyzer

The analyzer host computer directly uses Wireshark. The hardware is implemented using Cypress CY7C68013A MCU + Lattice LCMXO2 FPGA + Microchip USB3343 USB PHY

Schematic PCB

Open Source SCPI Programmable Precision Resistor Meter

A programmable resistor is an electronic device whose resistance can be adjusted, usually through a digital signal. Programmable resistors come in the form of integrated circuits (often called digital potentiometers) as well as stand-alone devices/expansion cards. There are many different applications, each with its own set of requirements.

​Range 1Ω - 999.999KΩ.

Schematic PCB

Homemade flexible capacitive sensor

By CNC engraving a PCB in the following manner, the curved pad can perform capacitive sensing in 3 different directions and ultimately detect the 3D position of the finger.

Schematic PCB

Multifunctional mini computer (SD, wifi, OLED)

Multifunctional mini computer (SD, wifi, OLED) design source code and related test programs

Schematic PCB

USB-C "switch", hardware open source, firmware provided

The basic functions of USB-C are supported, such as high-speed communication and charging functions. Then this design solves the problem of painless switching between one host and multiple devices, or one device and multiple hosts.

Schematic PCB

110/220VAC optically isolated zero-crossing detector module for DIN rail bracket mounting with 3.3V or 5V output - ideal for Arduino, ESP32/ESP8266

Detects Zero Cross point of AC supply (110/220VAC) and outputs a 1ms square pulse at 3.3V or 5V. 72mm x 20mm for DIN rail carrier mount.

Schematic PCB

Low-cost 2.5KV USB power isolation solution (schematic + BOM + gerber, etc.)

This is a low-cost isolation achieved through a power transformer. Since the transformer is more convenient for AC isolation, but DC is not suitable, ATtiny412 is specially used for control.

Schematic PCB

CANFDuino: The best platform for open source, CAN-bus Arduino projects

CANFDuino supports CANFD, the latest version of the CAN bus standard, which can accommodate speeds up to 5 Mbps. It has two local ports with DB9 connectors in a housing that can be mounted on your vehicle or installed in your own projects. The platform is designed for tinkerers, hackers, and industry professionals looking for a ready-made, open source CAN bus solution that requires little or no hardware assembly.

Schematic PCB

Storage oscilloscope, fully functional and verified, for graduation project

Storage oscilloscope, fully functional and verified, for graduation project

Schematic PCB

WS281x LED RS485 transceiver

2 Layers PCB 10 x 18 mm FR-4, 1 mm, 1, HASL with lead, White Solder Mask, Black silkscreen;Cofigurable RS485 TX-RX transceiver for long range serial LED strip communication

Schematic PCB

Tigard: an open source, multi-protocol, multi-voltage hardware hacking tool based on FT2232H

Tigard is an open source, multi-protocol, multi-voltage hardware hacking tool based on FT2232H. By combining commonly used pins, labeled harnesses, onboard level translation, and logic analyzer connections, it is specifically designed to connect to and communicate with low-speed interfaces on reverse-engineered hardware targets.

Schematic PCB

10x10cm 1.27mm perforated board

2-layer PCB 100 x 100 mm FR-4, 0.8 mm, 1, tinned with leads, green solder mask, white silkscreen;

Schematic PCB

10KHz-30MHz Mini WIHIP AKTIF Antenna

10KHz-30MHz Mini WIHIP AKTIF Antenna

Flexible PCB with three buttons

1 Layers PCB 11 x 48 mm Polyimide Flex, 0.1 mm, 1, Immersion gold (ENIG), Yellow Solder Mask, White silkscreen;

Schematic PCB

FORmod - FORD S/S DRIVE MODE

A simple circuit to disable automatic start-stop and set the default drive mode on a Ford vehicle.

Schematic PCB