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

1117 Simple board for voltage regulator

2 Layers PCB 14.8 x 24.8 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;For SMD 1117 Set Voltage O/P Regs - LED Indication

Schematic PCB

10-channel level converter with Raspberry Pi connector

A small add-on board for the Raspberry Pi that I have designed specifically to solve the constant problem of shifting levels on sensors

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

100 QFP to DIP

2-layer PCB 28 x 132 mm FR-4, 1.6 mm, 1, tinned with leads, green solder mask, white silkscreen;

Schematic PCB

0-30V 0-3A DC regulated power supply circuit

0-30V 0-3A DC regulated power supply circuit

Schematic PCB

Arduino development board GIGA RI WiFi based on STM32H7

Schematic PCB

Open source C-mount lens USB industrial camera (source code, PCB, design and production instructions, etc.)

There are three boards in total, USB, FPGA and Sensor board. The FPGA board features a Lattice Crosslink NX LIFCL-40 and the required power regulator, and the USB board features a CYUSB3014 USB 3.0 SuperSpeed ​​controller.

Schematic PCB

ESP32+RP2040 two-in-one design board (schematic and PCB)

Schematic PCB

Hardware circuit realizes SPI to Ethernet 10BASE-T

It introduces in detail how to build an SPI to 10BASE-T to realize network data sending and receiving. 10BASE-T uses two differential pairs: one for transmission and one for reception. Each pair is coupled through a transformer and the signals are differential and Manchester encoded. All schematics and diagrams are open.

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

High resolution magnetic rotary encoder based on RP2040

This is a mature development board combined with a magnetic rotary encoder, which uses a Raspberry Pi RP2040 microcontroller with a base resolution of 36, expandable to 36,000 steps per revolution.

Schematic PCB

ReflowMaster: open source reflow master control based on the magic oven (schematic, PCB, gerber, source code, etc.)

Reflow Master Pro is designed to work in any oven - no algorithm adjustments required! That said, if you really want to tweak, you can switch from the classic Reflow Master algorithm to PID control and adjust your settings to your liking.

Schematic PCB

ChipWhisperer - Automotive grade chip blasting equipment

ChipWhisperer is a complete open source tool chain launched by NewAE for side-channel power analysis and fault attacks. The tool chain includes hardware, host computer software, and hardware chip firmware, all open source on Github. This set of equipment is mainly dedicated to hardware security research.

Schematic PCB

Full open source reverse "blasting" tool

Through this open source tool, everyone can better understand how program firmware is "exploded", thereby improving product security. Crack AES, crack RSA, crack DES and so on.

Schematic PCB

Three-axis gimbal source code schematic software

Schematic PCB

Smoke detector schematic and PCB source files and BOM

Smoke sensor design includes principle circuit design, PCB and BOM list

Schematic PCB

TDS water quality test pen schematic diagram, PCB and BOM

If you are interested, you can take a look or download the schematic diagram and BOM table of the tds detection pen.

Schematic PCB

JLINKV9 schematic diagram

jlink-v9.5 schematic diagram, you can directly learn the JLINK principle

Schematic PCB