electronics News - Page 13 of 20 - CNX Software

July 30, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Kicad 5.0.0 Open Source EDA Suite Released

Once upon a time, your only options to design schematics and layout PCBs were to purchase expensive software like OrCAD, or install a pirated copy of the same software, which was the standard practice in the country were I worked (China). Later on, Cadsoft EAGLE made projects much more affordable since they had a free version for hobbyists albeit limited to smaller boards. But in recent years, a new open source project called KiCad changed the market again, as it is entirely free to use, the community can be involved, and there’s no limitation. The software has even become good enough for companies like Olimex to design their new boards. A week ago or so, the project hit a new milestone with the release of KiCad 5.0.0. Some notable new features include: Whole Project New libraries for symbols, footprints and 3D models based on KiCad Library Convention (KLC) New 3D […]

July 11, 2018July 11, 2018 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

This Soldering Pen Board with Audio Jack Supports Weller RT Tips

The 3.5mm audio jack may be slowly disappearing from new mobile phones, but I’ve recently discovered they were also used in some soldering irons such as the upcoming TS80 USB soldering iron succeeding TS100 model. I initially thought it was a custom design from the maker of TSxxx soldering irons, but this morning I’ve come across the “RT Soldering Pen” board which also features a 3.5mm (audio) jack and can be used to make your own soldering iron by 3D printing your own enclosure, adding some power source, and inserting one of the many Weller RT tips available into the jack. RT soldering pen board specifications: MCU – STMicro STM32F031 Arm Cortex-M0 micro-controller Display – 0.91″ OLED display with 128×32 resolution Compatible with all Weller RT tips with 3.5mm jack. Set-point temperature – 20°C – 400°C with about +/-5°C accuracy (calibration is planed) Maximum measurable temperature – 500°C Heating speed […]

July 3, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Connect Multiple Rotary Encoders to Arduino, ESP8266, Raspberry Pi, etc… with I2C Encoder V2 (Crowdfunding)

Rotary encoders are pretty common devices that convert the angular position of a shaft to analog or digital output signals with quadrature-encoded A / B pulses the most common way of reporting the position to the micro. So for each encoder you’d need 2-pin, and if your project use many of those you may quickly run out of pin, interrupts, etc… Simone Caron has decided to tackle this issue by creating an I2C encoder board, which works with various encoders, and whose second revision is now offered on Kickstarter. The I2C Encoder V2 board supports standard mechanical encoders, illuminated RGB encoders, and clickable rotary encoders, each of which may be with or without dent. The board also comes with 3 GPIOs following RGB LED footprint, but also usable as PWN, GPIO, or ADC, and each board’s I2C address can be configured with some soldering on A0 to A6 pins. Finally, […]

June 14, 2018 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

SPIDriver Tool Allows you to Control and Monitor SPI Devices from your Computer (Crowdfunding)

SPIDriver is an interested SPI debugging / programming tool that connect to your PC’s USB port to control SPI devices, such as LCD Displays or LED strips, while showing the SPI signals and voltage/current levels on a color display. The tool can also be used as an SPI flash programmer. SPIDriver hardware specifications: Headers 5-pin SPI header up to 500 Kbps + A/B auxiliary output signal 4-pin power header with 5V and 3.3V support Maximum power out current – up to 470 mA Signal current – up to 10 mA Device current – up to 25 mA Host interface – micro USB 2.0 port Color display showing signals Dimensions – 61 mm x 49 mm x 6 mm The board works with an open source program available in Windows, Linux, and Mac OS using either a GUI or a command line. It’s also possible to program the device using C/C++ […]

June 4, 2018June 4, 2018 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

UM25C is a Better USB Power Meter with built-in Display, Bluetooth, and Android & Windows Apps

Products such as USB Charger Doctor are good way to test your USB chargers or cables, as well as checking the power consumption of USB powered development boards. You just plug them into a USB port, and connect the load, and you’ll see the real-time voltage and current shown on an LED display. Those do the job, but I’ve just been made aware of UM25C USB meter tester that improves a lot on the concept with a dot matrix display capable of showing charts, and Bluetooth connectivity to send the data to Android or Windows devices. UM25C specifications: Display 1.44″ color LCD display 0-5 brightness setting Auto screen off time – 0 to 9 minutes Refresh rate – 2Hz Measurement Range & Accuracy Voltage – 4-24.000V ±0.5‰ + 2digits Current – 0-5.0000A ±1‰ + 4 digits Capacity – 0-99999mAh Energy accumulation – 0-99999mWh Load impedance – 0.8Ω-9999.9Ω Time range – […]

June 4, 2018June 10, 2018 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tibbo-Pi is a Wirefree Modular IoT Prototyping Platform for Raspberry Pi Board

Tibbo Project System (TPS) is a modular Linux IoT prototyping platform based on the same Texas Instruments Sitara AM335x processor used in BeagleBone Black or a PocketBeagle boards, and comprised of a main board, Tibbit blocks to add features as needed, and an enclosure. I’ve now been informed the company will be at Computex 2018 to showcase their new products including Tibbo-Pi, following the same concept as Tibbo Project System, but leveraging Raspberry Pi 3 board and ecosystem instead. While an English brochure is said to be available, all information in the webpage listed in the photo above is in Japanese. But basically, Tibbo-Pi is said to be an IoT edge device for industrial use, made for build a prototypes, or small scale production system thanks to a choice a 60 different Tibbit Blocks sensor and I/O module blocks, all wire free. Programming of the system is typically done with with […]

May 30, 2018June 5, 2018 by Jean-Luc Aufranc (CNXSoft) - 21 Comments

My Sonoff TH16 Wireless Switch is Dead – Postmortem Analysis

Back in November 2016, I connected Sonoff TH16 WiFi switch to my water pump, and since then it worked fairly well, except for the occasional “offline error” in eWelink app, which was usually solved with a power cycle. But in the last couple of days, I noticed the pump would not start at the set time, and I could not control it using the Android app either, even after turning on and off the power. So I took it out to have a look, and one component indeed burnt. ITEAD Studio released the schematics in the Wiki, and the dead component is connected to a GND as well as to a transistor, so it must be R2 4.64 Ohm resistor [Corrected from R3 resistor after checking board with multimeter]. But what may have caused this? Resistors burn because too high of a current flows through them. We often have micro […]

May 17, 2018May 17, 2018 by Jean-Luc Aufranc (CNXSoft) - No Comments

Hexabitz Modular Prototyping Platform Enables Wire-Free 3D Electronics Designs (Crowdfunding)

A few years ago, I made a Raspberry Pi case made of perfboard and created some sort of DIY modular 3D electronics design by using the top and sides of the case to also hold electronics components and associated circuitry like a relay, and LEDs. The just launched Hexabitz hexagonal / pentagonal modules are designed to make prototyping easier, and also provide flexibility to create all sort of wire-free (3D) electronics designs with minimal soldering. A little over a dozen of modules are currently on offer, most with an STM32F0 Arm Cortex M0 micro-controller: Modules with built-in MCU 01R00, P01R00 – RGB LED (hexagon / pentagon) with Cree Tri-color (RGB) SMD LED, 4-Pin PLCC H02R10 – Bluetooth/BLE V4 based on Laird BT900-SA + chip antenna, +8 dBm max H04R00 – Audio amplifier, speaker, and headphone jack based on ST TS4990IST 1.2W audio power amplifier, 0.7W, 8 Ohm speaker H05R00 – SPI […]