TIDA-00333: Dual isolation, half-duplex RS485 repeater reference design, with built-in transceiver control

Suitable for long distance RS-485 networks. The design provides transient protection from the effects of ESD, EFT and surge transients as specified in the IEC 61000 transient immunity standard.

Schematic PCB

pmod-gnss：GNSS PMOD、GPS + Glonass

This design is a PMOD with the ublox NEO GNSS receiver footprint. Able to receive GPS and GLONASS simultaneously.

Schematic PCB

pcie_x4: SYZYGY creates PCIe x4 add-in card

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This breakout connects the SerDes in the SYZYGY-TXR connector to the card edge to act as a PCIe x4 add-in card. This breakout is very simple and can be made into a shorter SYZYGY pod.

Schematic PCB

pcie_x1: SYZYGY creates a compact PCIe x1 add-in card

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This breakout connects the Channel 0 TX/RX SerDes from the SYZYGY-TXR connector to the edge of the card to act as a PCIe x1 add-in card.

Schematic PCB

memory-lcd-wing: Minimal wing for OrangeCrab

This design is a wing add-on that attaches to the OrangeCrab and adds a Sharp Memory LCD. 400x240 on/off pixels. The board is the size of the monitor.

Schematic PCB

hdmi-si: HDMI breakout board

Simple branching of HDMI cable signals for analysis/verification of signal level and phase.

Schematic PCB

gpdi-serdes: GPDI using serdes

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This design splits the video output to a regular digital display and also supports input from the digital display. It connects to the SERDES via a SYZYGY-TXR connector. Would love to be able to test the 5Gbps output of high resolution GPDI.

Schematic PCB

GPDI: SYZYGY interface board with 2 digital video ports

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This project is a splitter that outputs video to a regular digital display and also supports input from a digital display.

Schematic PCB

ESP32-breakout：ESP32S2 + Sharp memory LCD + prototyping area

ESP32S2 + Sharp memory LCD + prototyping area

Schematic PCB

ecpbreaker: Based on icebreaker FPGA board, upgraded ECP5

The icebreaker project is a very nice and handy little board. But it has a small flaw, the ice40 FPGA it uses is very simple, and it's generally fun to see people doing exciting projects with 5k LUTs. Sometimes it's convenient to have some extra space available when experimenting.

Schematic PCB

ATmega-Soldering-Station: Mature T12 soldering station controller

This project includes all the software and hardware design required to develop the T12 soldering station. The PID parameters are mature and the function completion is very high.

Schematic PCB

Open source practical current and magnetic field probe little-bee

Little Bee is an affordable, high-performance current probe and magnetic field probe that allows you to debug and analyze electronic devices more efficiently.

Schematic PCB

Open source industrial control baseboard made by Arduino for STM32H7

The schematic diagram is open source, you can see if there is anything worth learning from. This baseboard is designed for their previously launched H7 core board.

Schematic PCB

Production Line Tool launched by Dialog

The software part of this tool (including the host computer) is not open source, but the schematic diagram and PCB related files are.

Schematic PCB

DM9000 EMI test circuit reference

DM9000 EMI test circuit reference

Schematic PCB

Particulate pollution measurement based on ESP-32

Israeli network engineer Nir Huri invented an air pollution monitoring device based on ESP-32.

Schematic PCB

DIY an SMT placement machine OpenPnP

Nowadays, almost all circuit boards use surface mount packaging, so I have always wanted to DIY a chip placement machine. After searching online for a long time, I finally decided to use the open source OpenPnP. The hardware and software are both open source.

Schematic PCB

The most powerful T12 integrated portable soldering iron with gyroscope and buzzer, PD power supply

Built-in gyroscope, buzzer, supports multiple fast charging protocols, 128x64 OLED screen, standard T12 fixed bayonet. Regarding the problem of grounding the soldering iron, you can use the PD power supply of Mac and prepare a triangle extension cable to solve the problem perfectly. Or using a power bank directly is not a big problem.

Schematic PCB

SWD offline programmer

This project uses STM32F103RET6 as the main control, and is modified based on ST's official CMSIS-DAP project to achieve offline and read-protected programming (because the project currently only has F103 series offline programming requirements, so only F103 programming is temporarily added. write algorithm).

Schematic PCB

Portable strip soldering station based on Arduino platform Atmege328p

Open sourced by Bilibili up, DCDC-LDO secondary step-down power supply, tc1047 for cold-end compensation, built-in curve fitting calibration function, and supports 65W gallium nitride charger.

Schematic PCB