Tag: DIY Electronics

High Current Cigarette Lighter Connector Test | Voltlog #473

In the quest for reliable power accessories, Voltlog embarked on a comprehensive testing journey to evaluate the performance of various cigarette lighter connectors. These unassuming components play a pivotal role in powering our on-the-go devices, but cheap options from online marketplaces often fall short of their advertised current ratings, posing potential safety risks.

The lineup consisted of five connectors, ranging from budget-friendly AliExpress offerings to reputable brands from distributors like Digikey. Through a series of rigorous tests, each connector was subjected to its claimed current rating, with temperatures meticulously monitored using a thermal camera.

The results were eye-opening. Connectors rated for 10A and 15A from AliExpress quickly succumbed to the heat, emitting foul odors and melting within minutes. Even the Digikey connector, boasting a 20A rating and a datasheet, struggled to maintain safe temperatures, with internal components soldering themselves together due to the excessive heat.

Surprisingly, an unassuming AliExpress connector, rated for 20A, emerged as the unexpected winner. Its robust construction and thick middle pin seemed to dissipate heat more effectively, outperforming its pricier counterparts. However, the true lesson learned was that for continuous usage at high currents, a heavy-duty female socket with ample heatsinking capabilities is essential.

Voltlog discovered sockets designed specifically for this purpose, featuring ceramic bases, double metal shells, and extended lengths to maximize heat dissipation. This comprehensive testing underscores the importance of scrutinizing advertised specifications and prioritizing safety when it comes to electrical components, especially those handling high currents.

Voltlog’s dedication to uncovering the truth behind these unassuming accessories is a valuable contribution to the DIY electronics community.

InTheMail | Voltlog #472

Welcome to the first InTheMail episode of 2024 on Voltlog! In this installment, we dive into the latest gadgets and tools that have arrived at the lab, perfect for DIY enthusiasts, electronics hobbyists, and tech explorers alike. Kicking things off is a handy 24-pin ATX power supply on/off switch, a game-changer for anyone working with ATX PSUs.

No more fumbling with paperclips or risking short circuits – this nifty device features a dedicated on/off switch and even an LED indicator to signal when the PSU is powered on. Next up, we explore the world of cable sleeving with a nylon braided variety that can transform a mundane wiring job into a professional-looking masterpiece.

While not heat-resistant, these sleeves come in various diameters to accommodate different cable sizes, adding a touch of elegance to your projects. Continuing the theme of project essentials, we have mains voltage neon lamps in panel mount and glass bead variants, perfect for power presence indicators or test fixtures.

And speaking of testing, PTC thermistors offer a convenient way to simulate valve behavior when developing projects like the underfloor heating multi-channel valve controller board. Wireless enthusiasts will appreciate the crimpable N-Type RF connectors compatible with LMR400 cables, along with a press-fit variant that eliminates the need for a crimp tool.

And for those seeking a rugged, magnetic connector solution, the magsafe-style connector with its keyed design and solid construction is sure to impress.

This Soldering Iron Is Actually Nice | Voltlog #471

In recent years, the majority of soldering iron manufacturers have switched to using cartridge-style tips, which integrate the heater and thermocouple for optimal thermal conductivity and fast response. As a result, most soldering irons and stations that use these tips offer adequate soldering performance for the average user.

While reviewing thermal performance in great detail may not be as crucial nowadays, aspects like usability and accuracy are more important to consider. The FNIRSI HS-01 soldering iron is a portable and capable option that impresses with its excellent build quality and functionality. It comes with a 65W GaN USB-C charger, a flexible silicone-insulated USB-C cable, and a compact holder for the iron.

The tips are similar to Hakko T12 or T15 but shorter, allowing for greater precision when soldering small components. One standout feature is the intuitive temperature adjustment in 10-degree increments, making it quick and easy to dial in the desired setting. The iron also offers a sleek OLED display, a power percentage bar graph, and various settings accessible through a menu system.

In testing, the FNIRSI HS-01 handled soldering tasks with ease, from melting solder on large pads to precisely soldering pin headers and SMD components. Its ability to run from a power bank adds to its portability, making it an excellent choice for on-the-go soldering or as a backup to a dedicated soldering station.

Overall, the FNIRSI HS-01 soldering iron is a highly recommended option for those seeking a portable and capable soldering solution, offering excellent value for its performance and features.

Adding WiFi Connection To Rigol DHO800 Series | Voltlog #470

Unleash the Full Potential of Your Rigol DHO800 Series Oscilloscope with this Simple WiFi Hack! If you’ve been frustrated by the lack of built-in WiFi connectivity on your Rigol DHO800 series oscilloscope, fear not! Thanks to the ingenuity of the eevblog forum community, there’s a straightforward solution that will allow you to add wireless connectivity to your device with minimal effort.

The key to this hack lies in the Android operating system running underneath the Rigol DHO800 series oscilloscopes. By leveraging the pre-installed drivers for the Realtek RTL8188 chipset, you can transform your oscilloscope into a WiFi-enabled powerhouse with just a simple USB WiFi adapter. To accomplish this, you’ll need to acquire a TP-Link TL-WN725N USB WiFi Adapter (version 2 or 3), which is widely available and affordable.

These adapters are specifically designed with the Realtek RTL8188 chipset, ensuring seamless compatibility with the Android drivers on your oscilloscope. Once you have the adapter, simply connect it to your oscilloscope using a USB hub (along with a keyboard for initial setup), and follow the step-by-step guide provided in the video.

By accessing the Android operating system’s settings through keyboard shortcuts, you can easily connect to your desired WiFi network and enjoy wireless connectivity. While this hack may not be officially supported by Rigol and may exhibit some quirks (such as the GUI showing “network disconnected” despite being connected), the benefits far outweigh the minor inconveniences.

With WiFi connectivity, you can access the oscilloscope’s web control interface, transfer screenshots seamlessly, and even adjust the display brightness – a feature previously unavailable through the GUI.

The New Rigol DHO800 Series Review | Voltlog #469

The wait is finally over for Rigol enthusiasts! After eight long years, the renowned oscilloscope brand has unveiled the highly anticipated DHO800 series, a remarkable upgrade to the beloved DS1054Z. As a proud owner of the latter, I was thrilled to get my hands on the top-of-the-line DHO814 model, courtesy of Eleshop.eu and Rigol.

Straight out of the box, the DHO814 exudes an air of modernity and refinement. Its compact, featherweight form factor is a stark contrast to its robust predecessor, promising to save precious real estate on your workbench. The glossy, 7-inch capacitive touchscreen with a resolution of 1024×600 pixels adds a touch of elegance, while the familiar array of buttons and knobs ensures a seamless transition for seasoned users.

Under the hood, the DHO814 packs a punch with an array of impressive upgrades. The bandwidth now starts at a respectable 70MHz, with the top-tier model boasting a 100MHz capability. The sampling rate has received a modest boost to 1.25GS/s, while the vertical resolution has undergone a game-changing leap to 12 bits, promising unparalleled signal capture and visualization.

One of the standout features is the UltraAcquire mode, which enables a staggering waveform capture rate of up to 1 million waveforms per second, ensuring you never miss a transient event. The memory depth has also increased to 25Mpts, providing ample headroom for intricate signal analysis.

InTheMail | Voltlog #468

Welcome back to another exciting mailbag video! In this edition, we’ve got a fantastic selection of electronics modules, tools, and accessories that are sure to pique the interest of any hobbyist or tech enthusiast. From practical storage solutions to unique bargraph displays and rapid prototyping boards, this video is packed with gems that might just inspire your next project.

Kicking things off, we have a pair of EVA storage cases that are perfect for safely storing and transporting small devices like logic analyzers or firmware debug tools. These compact and affordable cases are a must-have for anyone who values organization and protection for their electronics. Next up, we have a fascinating LED bargraph module that caught my eye.

This round, 31-segment display is a true eye-catcher and can be used in various projects, such as level indicators or visual displays. With options for different colors like green, red, and yellow, these modules offer versatility and a touch of retro charm. For those who frequently work with ESP32 or compatible modules, the prototyping PCBs featured in this video are a game-changer.

These boards allow for rapid prototyping and easy access to all pins, making them invaluable tools for any maker or developer. But that’s not all! We also explore a range of other exciting products, including a bicycle pump valve replacement, pneumatic fittings, high-quality cigarette lighter connectors (with a rant about delivery restrictions), connector adapters, USB Power Delivery decoy modules, and even an EMI filter module for power supply noise suppression.

Mastering PCB Cleaning with an Ultrasonic Cleaner! | Voltlog #467

Keeping your Printed Circuit Boards (PCBs) in pristine condition is crucial for ensuring optimal performance and longevity. While no-clean solder products are available, many fluxes and soldering materials leave residue that can corrode components, cause leakage currents, and compromise the overall aesthetics of your projects.

Fortunately, an ultrasonic cleaner offers a convenient and effective solution for thorough PCB cleaning. In this comprehensive guide, we’ll explore the benefits of using an ultrasonic cleaner, essential safety precautions, and a step-by-step process for achieving impeccable PCB cleaning results. The principle behind ultrasonic cleaning is a phenomenon called cavitation.

High-frequency sound waves create rapid pressure changes within the cleaning solution, generating countless microscopic bubbles that form and implode. As these bubbles collapse near the surface of the PCB, they release intense energy, dislodging dirt, contaminants, and residue from even the most hard-to-reach areas.

Before diving into the cleaning process, it’s crucial to observe a few safety precautions. Firstly, never run an ultrasonic cleaner dry, as it can overheat and damage the unit. Secondly, avoid using flammable liquids, as they pose a fire risk when heated. Lastly, consult component datasheets to ensure that the parts can withstand ultrasonic cleaning and submersion in liquids.

To achieve optimal cleaning results, choose a high-quality ultrasonic cleaner like the VEVOR Ultrasonic Cleaning Machine, which offers adjustable temperature, cleaning time, and ultrasonic power settings. Pair it with a suitable cleaning solution and deionized water for best results. The cleaning process itself is straightforward: fill the cleaner with the appropriate solution, submerge the PCB, and let the ultrasonic waves work their magic.

Post-cleaning steps include rinsing the PCB in deionized water and drying it with compressed air. One of the significant advantages of ultrasonic cleaning is its ability to dislodge residue from hard-to-reach areas, such as between component leads and under IC packages, ensuring a level of cleanliness unachievable through manual brushing alone.

Infiray P2 PRO Good Yet Affordable Thermal Camera | Voltlog #442

Thermal imaging has become an indispensable tool for electronics enthusiasts and professionals alike, allowing for detailed inspection and analysis of printed circuit boards (PCBs) and electronic components. In this review, we take a closer look at the Infiray P2 PRO, a compact and affordable thermal camera that promises to deliver impressive performance for PCB inspection tasks.

Designed specifically for PCB work, the Infiray P2 PRO stands out with its high-resolution 256×192 pixel sensor and a blistering 25Hz refresh rate, ensuring smooth and detailed thermal imaging. With a temperature range spanning from -20°C to a scorching 550°C, this camera is well-equipped to handle even the most demanding applications.

One of the key highlights of the P2 PRO is its optional macro lens, which allows for incredibly close-up inspections of PCBs and individual components. With a working distance of approximately 30mm, you can easily identify hotspots and thermal anomalies on silicon dies, IC packages, and even tiny 0402 resistors – a capability unmatched by many competing products in this price range.

The camera’s compact size and included USB-C extension cable make it highly versatile, allowing you to easily maneuver it into tight spaces and enclosures for thorough inspections. The intuitive Android app offers a wealth of features, including multiple color palettes, emissivity and ambient temperature adjustments, and advanced measurement tools like spot, line, and area measurements.

While the P2 PRO doesn’t offer image merging capabilities found in higher-end thermal cameras, it does provide a picture-in-picture mode for general orientation. Additionally, the ability to record video and audio simultaneously proves invaluable for documenting your findings and observations. Compared to alternatives like the UNI-T UTI260B, which lacks a dedicated macro lens out of the box, the Infiray P2 PRO shines in its out-of-the-box readiness for PCB inspection tasks.

Its combination of high resolution, macro capabilities, and user-friendly software make it a compelling choice for hobbyists, repair technicians, and electronics professionals on a budget.

Microscope Power Distribution Unit | Voltlog #436

If you’re an electronics hobbyist or a professional working with intricate setups like trinocular microscopes, you know the struggle of dealing with a mess of wires and multiple power adapters. Voltlog’s latest project, the “Microscope Power Distribution Unit,” offers an ingenious solution to this common issue.

In this project, Voltlog designed a compact PCB that takes a single 12V DC input and distributes power to three individual channels, each with its own protection and voltage regulation. One channel is configured to output 5V for powering LED lights, while the other two channels provide 12V outputs for the monitor and camera.

The beauty of this design lies in its simplicity and versatility. By consolidating multiple power adapters into a single unit, Voltlog has effectively decluttered their workstation and reduced the tangle of wires. Additionally, the open-source nature of the project allows others to replicate or modify the design to suit their specific needs.

Voltlog’s meticulous attention to detail is evident in the choice of components, such as the use of PTCs for overcurrent protection and the inclusion of filtering capacitors for clean power delivery. The sleek green soldermask and ENIG gold plating on the PCBs add a touch of elegance to the functional design.

But the project’s true value extends beyond its practical application. It serves as a testament to the ingenuity and problem-solving skills of the maker community. By identifying a common pain point and developing a tailored solution, Voltlog has demonstrated the power of DIY electronics and the potential for streamlining complex setups.