Contactless face recognition access control system

In the epidemic environment, people don't want to touch things outside, so we create a face recognition access control system that does not require contact. When it is detected that a person is approaching the door, the face recognition device is awakened to save power consumption. When the face recognition passes, the door is controlled to open.

Schematic PCB

Multifunctional open source custom macro keyboard based on esp32s3

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Open Source SMD Reflow Soldering

500W 200mm x 100mm hot plate with designed housing.

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HealthyPi 5: open source biosignal acquisition board

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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

Interactive Memory Technology Learning Kit Core64

Core64 combines real core memory and LEDs in a unique interactive way. Core Memory is a magnetic memory technology from the 1960s and 1970s. The tip of the stylus has a magnet that interacts with the LED through Core Memory. In practice, users can think of it as a magnetic touch screen

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TI ultra-low power wireless vibration sensor monitors motor reference design

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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

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Open source current probe based on Rogowski coil

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WS2813 WLED fixed buffer

2-layer PCB 9 x 11.4 mm FR-4, 1 mm, 1, HASL with leads, blue solder mask, white silkscreen; very small buffer for WS2813 LED strip.

Schematic PCB

Multifunctional buffer for WS2813 LED strip

2 Layers PCB 10 x 16.5 mm FR-4, 1 mm, 1, HASL with lead, White Solder Mask, Black silkscreen; WS2813 buffer and repeater for long range serial transmission

Schematic PCB

Women's safety device, smart wallet with GSM and GPS location tracking

2 Layers PCB 52 x 96.3 mm FR-4, 1.6 mm, 1, HASL with lead, Blue Solder Mask, White silkscreen; A device for women safety, equipped with GSM and GPS modules for location tracking.

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Wireless Home Automation (Control and Monitoring) using Nextion HMI Display_PanelBoard

2 Layers PCB 38 x 41 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

Schematic PCB

Wireless Home Automation (Control and Monitoring) using Nextion HMI Display_MainBoard

2 Layers PCB 56.6 x 83.1 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

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Wireless communication based on NRF24 and Arduino Pro Micro

Wireless Communication with NRF24 and Arduino Pro Micro

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Personnel wireless alarm

2-layer PCB 46 x 75 mm FR-4, 1.6 mm, 1, HASL with leads, black solder mask, white silk screen; With this simple circuit you can make a wireless people counter.​

Schematic PCB

Window invisible magnetic sensor

2 Layers PCB 8.941 x 60.782 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

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WilkoL Bat Detector

2 Layers PCB 22 x 89 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;Hackaday project

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W84219ASJ75_lighting detector

2-layer PCB 38.7 x 49.5 mm FR-4, 1.6 mm, 1, with wire spray tin, red solder mask, white silkscreen; lightning detector.

Schematic PCB

Ardufocus-DRV8825: Precise open source focus controller

Ardufocus is the only OSS/OSH controller to support two independent focus motors, the high-resolution mode allows for stepwise sub-micron movements, multiple acceleration profiles, and it never forgets the focuser position between restarts.

Schematic PCB