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

100W fast charging power bank (0.91' OLED screen)

A 100W fast-charging mobile power supply based on the IP5389 chip solution, equipped with an OLED display that can display battery power and temperature.

Schematic PCB

0-30V, 0-7A adjustable switching power supply

2 Layers PCB 42.2 x 68.8 mm FR-4, 1.6 mm, 1, HASL with lead, 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

0-30v 0-10A variable power supply with adjustable voltage and current

Schematic PCB

0603 LED light strip 7 LEDs

2-layer PCB 8.89 x 19.05 mm FR-4, 0.8 mm, 1, soldered with leads, white solder mask, black silkscreen

Schematic PCB

Teacher ChaN’s AC load analyzer

Supports voltage, current, effective power, apparent power, power factor, frequency, and harmonic component display.

Schematic PCB

Adjustable 300v high voltage USB PD power supply, based on Raspberry Pi RP2040

Schematic PCB

PYPRCA: python programmable open source calculator based on Raspberry Pi PICO, developed using circuitpython

Pocket calculator style general purpose programmable device (computer) ideal for learning programming and improving building/soldering skills.

Schematic PCB

Raspberry Pi RP2040 direct drive DVI/HDMI interface display cool display

These demos all use Adafruit's PicoDVI branch, which makes the video framebuffer look like a regular Adafruit_GFX object, which makes drawing very easy.

Schematic PCB

PicoCray: 9 Raspberry Pi pico RP2040 for parallel computing

The PicoCray project connects multiple Raspberry Pi Pico microcontroller modules into a parallel architecture, utilizing the I2C bus to communicate between nodes

Schematic PCB

Open source headphone design based on RP2040 and PCM3060

All files are open source, including software, hardware and 3D printing shells, and how to make and assemble them are described in detail, especially the EQ equalization filter test and frequency response test are explained in detail. The main control uses RP2040 + TI 24-bit asynchronous stereo audio codec PCM3060 with 96/192kHz sampling rate.

Schematic PCB

Arduino development board GIGA RI WiFi based on STM32H7

Schematic PCB

120-channel logic analyzer based on Raspberry Pi Pico

The Raspberry Pi microcontroller 24-channel 100Msps logic analyzer has been upgraded to support 120 channels.
Daisy chaining of five devices is supported, allowing capture of 120 channels. Includes performance improvements and visibility improvements to the rendering engine, more samples in the screen, automatic selection of capture modes, editing capabilities, and more. The playability is getting higher and higher.

Schematic PCB

Wheelbot open source unicycle (schematic, PCB, source code, etc.)

This open source ferry robot has unique functions such as the anti-interference standing ability of a tumbler and automatic roll-up.

Schematic PCB

Simple, high-quality condenser microphone DIY for under $100

Schematic PCB

Open source smart cooling plate design based on PIC16F17146

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

Using Raspberry Pi Pico, a miniature Mars probe with an arm (schematic, PCB, 3D printing, source code, etc.)

Schematic PCB