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

Open source LCR table design

This work is written by Jean-Jacques Aubry

Schematic PCB

Glider: Open-source Eink monitor with low latency (including detailed explanation of Elink principle)

Schematic PCB

CN0283

Provides fixed power gain at the output of the IQ modulator

Schematic PCB

KV series 3-phase brushless DC motor control reference design

3-phase sensorless BLDC motor control solution using six-step communication process, including closed-loop speed control and dynamic motor current limitation.

Schematic PCB

Open source SMU precision power supply equipment

The SMU is a precision power supply device that can measure not only high-resolution voltage sources but also high-resolution current sources. It also integrates bipolar voltage and four-quadrant output functions to facilitate testing of various characteristics. By providing a linear sweep voltage and sweep current, the IV characteristic curve of the instrument can be obtained.

Schematic PCB

FRDM-K66F: Freedom development platform for Kinetis ^® K66, K65 and K26 MCUs

Freedom development platform for Kinetis ^® K66, K65 and K26 MCUs

Schematic PCB

Three-phase BLDC motor driver with L6235Q

L6235Q three-phase BLDC motor driver

Schematic PCB

CN0146

Construct a low-cost programmable gain instrumentation amplifier circuit using the four-channel single-pole single-throw switch ADG1611 and the instrumentation amplifier AD620

Schematic PCB

FRDM-K22F-AGMP03: Sensor Toolbox development board for 10-axis solution using FXLS8962AF, FXAS21002C, MAG3110 and MPL3115A2

L6362A based IO-Link (PHY) device evaluation board with Arduino connector for STM32 Nucleo

L6362A based IO-Link (PHY) device evaluation board with Arduino connector for STM32 Nucleo

Schematic PCB

KITFS6523CAEEVM: FS6523, System Basis Chip, DCDC 2.2A Vcore FS1B LDT CAN

The KITFS6523 evaluation board demonstrates the capabilities of the FS65xx and FS45xx product families. These safety SBCs target the ISO26262 automotive functional safety standard.

Schematic PCB

CN0156

Amplitude control circuit for AD9834 waveform generator (DDS)

Schematic PCB

SABER board based on i.MX 6QuadPlus application processor for smart devices

Open Source USB Analyzer

The software and hardware are all open source.

Schematic PCB

Wearable distance monitor based on ESP8266

A distance monitor based on ESP8266 can remind people to maintain appropriate social distance at any time during the COVID-19 epidemic to prevent the spread of the virus.

Schematic PCB

MTRCKTSPS5643L: 3-phase PMSM development kit using NXP MPC5643L MCU

MIMXRT1050-EVK: i.MX RT1050 Evaluation Kit

The i.MX RT1050 EVK is an entry-level, low-cost development platform equipped with the i.MX RT1050 crossover processor based on Arm Cortex-M7.

Dimebots, ultra-small independent autonomous robots

Dimebots are a group of autonomous, independent micro-robots that are as small as a dime, making them among the smallest robots in the world.

Schematic PCB

Anonymous small four-axis code

Anonymous small four-axis code

Schematic PCB