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Search result for: WA 0821 1305 0400 Teknisi Handheld XRF Gold Tester Landak Kalimantan Barat [[Tigapillar]]
| # | Post Title | Result Info | Date | User | Forum |
| Answer to: How to read resistor color codes? | 26 Relevance | 11 months ago | Paul | Theoretical questions | |
| A good rule of thumb when reading resistor color codes is to start from the end where the color band is closest to the lead. That first band usually marks the most significant digit, so if one side has a band that's clearly closer to the edge than the other, that’s your starting point. For instance, in many 4-band resistors, you’ll see something like red on one end and Gold on the other. The Gold band is usually spaced a bit farther from the edge, and since Gold and silver are never used as the first digit, that’s a solid hint they mark the tolerance and should be read last. Resistors can have up to 6 color bands, with the extra ones representing things like tolerance and temperature coefficient. These can be a bit trickier to read, but once you're familiar with the basic rules, it gets easier. Here’s a quick breakdown: 4-Band Resistor 1st Band = 1st digit 2nd Band = 2nd digit 3rd Band = Multiplier (i.e., how many zeros to add) 4th Band = Tolerance (accuracy) Example: Red (2), Violet (7), Orange (×1,000), Gold (±5%) → 27,000 ohms or 27kΩ ±5% If you still find it tricky, you can use an online calculator to make things easier: 👉Resistor Color Code Calculator | |||||
| Suggestions for a Handheld or Compact Oscilloscope? | 13 Relevance | 10 months ago | PCBChronicles | Equipments | |
| I’ve mostly used benchtop oscilloscopes available in my college lab, but now I’m looking to buy a portable oscilloscope that I can easily carry around for on-site testing and general electronics work. Portability is important to me, but I don’t WAnt to compromise too much on performance or usability. Can anyone recommend a good portable oscilloscope—either Handheld or tablet-style—that offers a decent balance of features, screen quality, and reliability? I’d prefer something with at least 2 channels, good battery life, and support for basic measurements lik ... | |||||
| Answer to: Beginner Arduino Course —Any Recommendations? | 9 Relevance | 11 months ago | Amelia | Arduino | |
| If you're just starting out with Arduino and electronics, you're definitely not alone—there are some fantastic beginner-friendly resources out there to help you get going without feeling overwhelmed. Helpful YouTube Channels Paul McWhorterOne of the best for beginners. His “Arduino Tutorial Series” is clear, structured, and goes from basics to intermediate projects. Jeremy BlumHis Arduino series is a classic and covers foundational knowledge with well-explained videos. GreatScott!Excellent for understanding how the hardware works behind your projects. Programming Electronics AcademyVery helpful if you're also interested in understanding the coding side deeply. Online Courses Worth Checking Out Udemy – "Arduino Step by Step: More than 50 Hours Complete Course" Taught by Dr. Peter Dalmaris. Very beginner-friendly and includes lifetime access to lessons and materials. Coursera – “Introduction to Programming with Arduino” Offered by University of California, Irvine. Teaches both basic electronics and coding in a structured format. | |||||
| DMM in mA mode causes ~0.6 V drop — normal burden voltage? How can I minimize it? | 7 Relevance | 8 months ago | JannikTechy | Theoretical questions | |
| I’m measuring the current draw of a low-voltage load and noticed my Handheld DMM, in mA mode, is dropping about 0.6 V across itself. Is that normal “burden voltage,” and what’s the best WAy to reduce it? | |||||
| Answer to: Suggestions for a Handheld or Compact Oscilloscope? | 7 Relevance | 10 months ago | Amelia | Equipments | |
| I used to use the Hantek 2D72 during on-site visits — handy little device. It’s got basic scope functions, a multimeter, and even a signal generator. Not the fastest thing out there, but it handled general debugging and signal tracing just fine. Also looked at the FNIRSI-1013D — decent screen, portable, works well for checking low- to mid-frequency signals. If you need something really compact and just for quick checks, the DSO Nano is another option worth a look. | |||||
| Answer to: Where can I learn more about direct port manipulation for controlling GPIO pins? | 7 Relevance | 2 years ago | Rashid | Programming | |
| This video is an absolute Gold. Thank you for sharing it. To learn more about architecture, what's the best WAy? | |||||
| Answer to: How can I safely power a BLDC motor from a hard disk drive? | 7 Relevance | 7 months ago | Divyam | Theoretical questions | |
| ... but may be difficult; a microcontroller + driver is great for learning but not the easiest. To find the pinout, measure resistance with a multimeter: with 3 wires, all pairwise readings should match (the three phases); with 4 wires, the pin that reads the same to all others is the neutral; phase order only affects direction, so swap any two leads to reverse. To avoid damage, never apply DC across two leads, don’t stall the rotor, keep leads short (with a decoupling capacitor near the driver), and WAtch temperature. | |||||
