California Publishes Q&A on New Prop 65 Warning Requirements

California to Require Hazard Warnings on Products Containing Twelve Common ChemicalsAnyone who has ever been to California is familiar with the ubiquitous Proposition 65 signs, “WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.” Applying to any product sold in the state of California, Proposition 65 traces origins to a 1986 voter initiative. Because of the overuse of the vague warning, the ubiquitous signs ulti...

Warning Requirements Prop 65

Design of BUCK Constant Current Source Circuit Based on RCC

RCC stands for Ringing choke converter, which also means oscillating-blocking power converter. As a once very popular power converter structure, with the rapid development of the integrated circuit industry, it seems to have gradually faded out of mainstream applications.Through the introduction of RCC-based BUCK constant current source circuit, this article explains the method and idea of using discrete components to achieve high precision and high efficiency constant current, and the applicati...

LED driving Constant Current BUCK RCC

DIY Your Retro-gaming Console ---- uChip Simple VGA Console (uSVC)

What is uSVC?uSVC is a simple, do-it-yourself game console that allows you to create and play retro-style 8-bit games with standard USB controllers and keyboards. In another word, it is an educational platform with a comprehensive Application Programming Interface (API) and a series of guides that will have you designing your own games in no time, all you really need is a soldering iron and some solder wire. uSVC handles multiple video modes, including 8x8-pixel tiled modes with 16 or 256 colors...

USB DIY uSVC VGA Console uChip Retro-gaming Console

Why use FPGA for IoT? Here’s what I think…

Everywhere people are buzzing about FPGA — Field-Programmable Gate Array. It’s a computing device that works like an Arduino Microcontroller — but in a different way. A microcontroller contains a CPU that executes instructions one at a time (but it can’t run 2 instructions simultaneously). Instead of CPU instructions, an FPGA uses a grid of electronic Logic Modules which contain bundles of Logic Gates like AND, OR, NOT. The grid looks like this (from my imagining):Grid of logic modules in an FPG...

microcontroller Field-Programmable Gate Arra Internet of Things FPGA Sigfox IoT Arduino

PCBWayExpress—— European Exclusive Route Logistic

We’re excited to announce that PCBWay have launched European Exclusive Route Logistic--- PCBWayExpress, which currently involves five countries, including The UK, Spain, Germany, France, Italy. Meanwhile, PCBWayExpress-IP(International Priority) is available for UK and Germany. Under this method of transportation, customer would pre-pay customs duties & taxes(DDP) to PCBWay. PCBWayExpressPCBWayExpress-IPBilling standard Description*Irregular packages are not accepted, and would cause a retur...

VAT package declaration requirements European Exclusive Route Logistic PCBWayExpress

How to get started with LoRa LPWAN using TTGO LoRa32

This tutorial covers how to get started with LoRa LPWAN using TTGO LoRa32 SX1276. TTGO Lora32 is an ESP32 device with a LoRa module and an SSD1306 LCD display.Using a pair of these devices, we will explore how to send and receive packets using a LoRa network. This is a point-to-point communication where one TTGO Lora32 acts as a sender and the other one is the receiver. Using the LCD display we will visualize the packets transmitted. In this project, we will use PlatformIO to build this project,...

SSD1306 LCD display ESP32 TTGO LoRa32 LoRa LPWAN

6 Misuses of Operational Amplifiers in the Design of Measurement and Control Circuits

Operational amplifier is a very important component in the measurement and control circuit, and has a very wide range of applications in the measurement and control circuit. As a commonly used device, operational amplifiers are more and more widely used in measurement and control circuits. The measurement and control circuit has more requirements for operational amplifiers than other applications, so more stringent requirements are put forward for the design of operational amplifiers. If the ope...

coupling interference voltage comparator Measurement and Control Circuits Operational Amplifiers misuse

PCBWay Q&A-004 | Common Questions for PCB Assembly Service on PCBWay-02

Last time Angell and Lesley elaborated the most basic and frequently asked questions about PCB Assembly. And today we’ll focus on some details. This time we invited Aimee, another our senior customer service staff, to our Channel. Hope her professional answer can help you know our PCB Assembly service better.Q1:Aimee, working in a PCB Prototype company, we’ll inevitably meet some urgent orders. For PCB order, our customers can choose extra urgent service to meet their needs. Then do we also offe...

Combo Kitted or Consigned Turnkey PCBA IC Programming BOM Files Customer-Supplied Parts

Disinfecting Robot with Ultraviolet Lights

Introduction to the RobotUltraviolet Germicidal Robot (UV Robot) is a teleoperated robot equipped with a UV light system. The system contains a moving robot vehicle and a ground station controller (GCS). The operator can control the robot using the joystick of the ground station controller (GCS) while observing the camera feed of the robot.The robot can disinfect and kill diseases, viruses, bacteria, and other types of harmful organic microorganisms in the environment, with ultraviolet light, by...

UVGI transmitter disinfection arduino motor driver UV light robot

Build and Flash Rust+Mynewt Firmware for PineTime Smart Watch

All you need is a Raspberry Pi and a Windows or macOS computer!UPDATE: This code in this article has been archived in the pre-lvgl branch of pinetime-rust-mynewt. The pinetime-rust-mynewt firmware has been revamped to support Rust Watch Faces on LVGL. Check out the updatesWelcome to the World of Modern IoT Gadgets! If you’re used to old-school IoT gadgets like Arduino Uno that are underpowered and have no networking and display… PineTime Smart Watch will surprise you! (Check out the Pine64 Store...

Pinetime Nrf52 Rust Internet of Things raspberry pi

Three Types of Switching Power Supply Snubber Circuit

1. What is a switching power supply snubber circuit?Snubber circuit is also called absorption circuit, which is an important protection circuit for power electronic devices. It is composed of inductors, capacitors, resistors, power switches and other components, which can protect the normal operation of the circuit. There are many forms of snubber circuits that can be divided into multiple categories according to different classification standards to adapt to different types of switching power s...

energy regenerative snubber circuit LCD RCD Snubber Circuit Switching Power Supply

All-in-one Bio-sensing Platform ---- E3K

What is E3K?E3K aims at providing an affordable, fully open-source, wireless framework for an intuitive understanding of bio-signals originated from the human heart, muscle, and brain. It is designed to get anyone working with bio-signal acquisition right out-of-the-box, while also allowing for complete customization. The platform consists of the following modules:Wi-Fi and BLE enabled Data Communication and Processing Unit (DCPU)Electromyography (EMG) sensor - to capture muscle movementsElectro...

CrowdSupply EEG EMG ECG DCPU IMU modules E3K open source Bio-sensing

Grow It Yourself

List of Contents:IntroductionExperimentsElectronics Design & ProductionWiring & Embedded programming (I/O Devices)3D Design & 3D printing2D Design & Laser cuttingCNC MillingMoulding & CastingPutting All TogetherIntroductionI was greatly inspired after watching the TED Talk about Digital Farming, delivered by the director of MIT’s Open Agriculture Initiative, Caleb Harper, which came up with the topic: This Computer will Grow your Food in the Future. The most important questio...

LCD pcb 3D design embedded programming electronics design Grow It Yourself

Porting [druid] Rust Widgets to PineTime Smart Watch

A button that responds to our tapping and increments a counter… That’s what we shall accomplish today on the PineTime Smart Watch…The Watch App we see in the video was created with the [druid] Crate in Rust.In [druid], UI controls are known as Widgets. Our app contains two Widgets: A Label Widget that displays the counter, and a Button Widget that increments the counter.Lemme explain the code in the [druid] app…pub fn launch() { // Build a new window let main_window = WindowDesc::new(ui_bu...

PineTime Nrf52 Programming Gadgets Internet of Things Rust

PCBWay TV Show 08 How can we use Arduino to make creative projects ?

Arduino is an open-source platform used for building electronics projects. Arduino consists of both a physical programmable circuit board and a piece of software, or IDE (Integrated Development Environment) that runs on your computer, used to write and upload computer code to the physical board. The Arduino platform has become quite popular with people just starting with electronics.Today we’ll introduce plenty of amazing Arduino projects. Let’s go check them together! And we have prepared Ardui...

LM35 Arduino Arduino Nano Balancing Robot PID Remote controlled robot Arduino

PCBWay TV Show 07 Amazing IoT Projects- Internet of Things

IoT, the Internet of Things, is making our home lives more productive, ergonomic, and allowing us to manage time more efficiently. Our houses are now being turned into smart homes, creating more savings on energy, water, and gas by monitoring our usage and habits. Household white goods now have a mind of their own. Today we’ll introduce plenty of amazing IoT projects. Let’s go check them together!1 ESP32 IoT Shield PCB with Dashboard for Outputs and Sensors When we talk about IoT, it could be na...

Alexa PIR Motion smart home IoT maker robotics PCBWay

Drone & Robotics Motor Module ---IQ Vertiq 6806

What is The IQ Vertiq 6806?The IQ Vertiq 6806 is the first commercial-grade drone and robotics motor module in its class. The module is an integrated motor and controller with an embedded position sensor. The combination of IQ’s unique hardware design and proprietary software allows IQ motors to maximize torque output, efficiency, and precision, while minimizing motor vibration, cost, and footprint. With IQ’s closed-loop motor control technology, UAVs will be able to change directions, stabilize...

CrowdSupply robotic devices UAV telemetry hardware embeded IQ Vertiq 6806 motor module robotics drone

Running Rust and FreeRTOS on the PADI IoT Stamp

Now is the best time to experiment with low-cost, low-power IoT microcontrollers.For under US$ 14, I can buy a tiny stamp-sized PADI microcontroller with ARM Cortex-M3 and built-in WiFi plus SPI, I2C and UART interfaces. And it comes with an SWD USB adapter for flashing and debugging. All set for building the latest and greatest IoT devices!But where are the software tools for writing robust and reliable programs for microcontrollers?Today my IoT students at Temasek Polytechnic are still writing...

Freertos Padi Rtl8710 IoT PADI FreeRTOS Rust

32-channel EEG ADC with Cortex-M7 ----FreeEEG32

What is FreeEEG32?FreeEEG32 is a stackable, open source 32-channel (4 ADCs x 8 channels ea.), 24-bit, sigma-delta, simultaneous sampling board meant to satisfy scientists and hackers who want research-grade equipment without breaking the bank. NeuroIDSS has been developing this EEG for several years now as the definitive open source answer to expensive, proprietary EEG technology.The FreeEEG32 mixes four AD7771 ADCs with ultra-low noise sources and references (<0.22 μV measured) and a powerfu...

microcontroller STM32H7 open source FreeEEG32 Cortex-M7 32-channel EEG ADC

How to get PCBWay Beans?

What is “PCBWay Beans”?It's Credit Points that can be earned and used on PCBWay. What can you do with PCBWay Beans? Redeem gifts (Coupons, modules, gadgets, etc) on PCBWay Gift Shop.How to get PCBWay Beans? 1.Rewards for orders.Earn 1 bean for every dollar you spend. 2.Rewards for purchase times. Earn 10 beans each time you purchase at PCBWay.com3.Rewards for answers.Earn 20 beans for each answer at" PCBWay Answers".4.Rewards for Projects sharing.Share your project story with great project desc...

answer article project sharing pcbway points PCBWay beans

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