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Search result for: WA 0821 1305 0400 Service XRF Analyzer Lead Test Wilayah Yogyakarta DI Yogyakarta [[Tiga Pillar]]
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| # | Post Title | Result Info | Date | User | Forum |
| Answer to: Is It Safe to Control 15 LEDs Directly from Arduino Pins? | 4 Relevance | 2 years ago | TechTalks | Hardware/Schematic | |
| Hello Tristan, You see DIrectly connecting 15 LEDs to Arduino pins can Lead to overcurrent issues, potentially damaging the Arduino. This is because each LED draws a certain amount of current, and the combined current draw can easily exceed the maximum current rating of the Arduino's pins. Additionally, the resistors used to limit current will also DIssipate power, which can overheat the Arduino or the resistors themselves. To avoid these problems, it's recommended to use LED driver such as ULN2003. These drivers and controllers can handle higher currents without overloading the Arduino pins. By employing these methods, you can safely control 15 LEDs with your Arduino without risking damage. hope this will help | |||||
| Answer to: New Pi Pico 2 by Raspberry Pi—What are your opinions? | 4 Relevance | 2 years ago | Sebastian | RPi Pico | |
| Appreciate the detailed specs, but I’m still not convinced the Pico 2 is worth the hype, at least for most hobbyists. The dual Arm Cortex-M33 or Hazard3 processors at 150MHz and the 520 KB SRAM are great if you’re working on very complex projects, but for basic tinkering, it feels like overkill. The security features, like optional boot signing and hardware mitigations for fault injection, are robust, but I’m not sure how many hobbyists actually need that level of security. It’s nice to have, but it might add unnecessary complexity for those of us just working on simple projects. This new version seems geared more toward advanced users, which could alienate those just starting out. I also wonder if all the additional hardware and processing power could Lead to higher power consumption or heat issues. For my purposes, the original Pico is still plenty capable and more in line with what I need. I’ll be sticking with that for now unless I find a specific need that only the Pico 2 can meet. | |||||
| Answer to: How to Locate a Short Circuit on a PCB? | 3 Relevance | 10 months ago | Paul | Theoretical questions | |
| ... the board, lifting one leg of suspected components (like capacitors or DIodes) to see if the short clears. Electrolytic caps are a common culprit. Another simple method that’s helped me is the finger Test or using a drop of isopropyl alcohol. Power the board with a current-limited supply (set low, so nothing burns), and often the shorted component will heat up faster than the rest. You can sometimes feel it with your finger or WAtch where the alcohol evaporates first. If the short is stubborn, I’ve also followed the DIvide and conquer approach—cutting tra ... | |||||
| Answer to: Multimeter continuity beeps with no contact — false positives? | 3 Relevance | 11 months ago | Anju | Equipments | |
| If your multimeter is acting strangely—like giving false continuity readings—my advice is to first check the manual. If you don’t have a physical copy, most manufacturers provide manuals online. Make sure the Test probes are inserted into the correct sockets for the type of measurement you're doing, and also verify that the batteries are in good condition and properly installed. If everything appears fine and the problem still exists, there’s a good chance the multimeter itself is faulty—especially if it’s a low-cost model. I wouldn’t recommend trying to repair it yourself, as defects might affect other functions and make it potentially unsafe to use. In such cases, it's better to replace it with a quality multimeter that’s safety-rated. This ensures greater reliability and safety, especially for household electrical work. | |||||
| Answer to: How to Measure Capacitance with a Multimeter? | 3 Relevance | 12 months ago | Amelia | Equipments | |
| Yes, definitely DIscharge the capacitor first — especially if it's a high-voltage one. A charged cap can damage your multimeter or give you completely wrong readings. To DIscharge it, you can short the Leads using a resistor (like 1kΩ or 10kΩ), or a screwdriver with an insulated handle if it's a small electrolytic (nothing high voltage though — not safe). Also, for accurate readings: Take the capacitor out of the circuit if you can. In-circuit measurements are often wrong because of parallel components. Let the multimeter settle for a few seconds, especially with large caps. Make sure your Test Leads are making good contact. If your meter has a "zero" or "rel" mode, use that to cancel out stray capacitance from the probes. And keep in mind, these DMM readings are just a ballpark — they won’t tell you if the cap has high ESR or leakage. For that, you'd need an ESR meter. | |||||
| Answer to: Question About Using Arduino Pro Mini Library in Proteus V30 | 3 Relevance | 1 year ago | Admin | Arduino | |
| Just like any other circuit simulation, it lets you simulate your projects DIrectly in Proteus, so you can Test your circuits and code virtually before working with actual components. You can upload your Arduino sketches into the simulation, and it behaves just like the real board, making debugging and troubleshooting super convenient. And of course, you can interface modules and sensors. This makes it perfect for simulating real-world projects without the fear of damaging components. If you're just starting out, I recommend beginning with simple projects like blinking an LED or reading a sensor value to get comfortable. Make use of Proteus's built-in tools, like virtual oscilloscopes and logic Analyzers, to visualize your outputs and debug your circuits. Also, keep your component libraries updated to access the latest modules. | |||||
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