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| # | Post Title | Result Info | Date | User | Forum |
| 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. | |||||
| Suggestions for a Handheld or Compact Oscilloscope? | 8 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: Suggestions for Good ATtiny85 Projects | 8 Relevance | 1 year ago | Admin | Circuits and Projects | |
| Here are 15 amazing project ideas you can create using the ATtiny85 microcontroller: LED Matrix AnimationProgram an LED matrix to display scrolling text or animations using the ATtiny85. Miniature Digital ThermometerBuild a small thermometer using a temperature sensor like LM35 or DS18B20 and display the data on a tiny OLED screen. IR Remote Control SystemDecode signals from an IR remote to control LEDs, fans, or other appliances. Sound Reactive LightsCreate an audio visualizer where LEDs blink in response to sound or music using a microphone module. Capacitive Touch SwitchMake a touch-sensitive button using a conductive surface and the ATtiny85, perfect for smart home switches. Portable Motion DetectorUse a PIR sensor to build a Portable motion detection alarm system for security purposes. USB Volume ControllerTurn your ATtiny85 into a USB HID device to control your computer’s volume with a rotary encoder. Tiny Weather StationMeasure temperature and humidity with sensors like DHT11/DHT22 and display the readings on an OLED. Ultrasonic Distance MeterUse an ultrasonic sensor to measure distances and display them on a small display. Blinking Bicycle LightCreate a small, energy-efficient blinking tail light for a bicycle, powered by a coin cell battery. Minimalist USB Game ControllerBuild a simple game controller for retro-style games with buttons connected to the ATtiny85. PWM Fan Speed ControllerControl the speed of a DC fan using pulse-width modulation and a temperature sensor for feedback. ATtiny85 Robot BrainPower a small robot with an ATtiny85, controlling motors and sensors for basic navigation. Night Light with Light SensorCreate an automatic night light that turns on in low-light conditions using an LDR and LEDs. Tiny Digital StopwatchDesign a simple stopwatch with start, stop, and reset functions using push buttons and an OLED display. These projects highlight the versatility of the ATtiny85 and can help you learn more about electronics, programming, and sensors. This site is hands down the best for projects related to ATtiny85. So, definitely check it out. | |||||
| Answer to: Is it okay to power digital ICs directly from a Li-ion battery, or do I need regulation? | 4 Relevance | 10 months ago | Harper | Theoretical questions | |
| A single Li-ion cell can swing from about 4.2 V when full to 3.0 V when empty, which is fine for parts designed for that range but dangerous for strict 3.3 V ICs — 4.2 V can exceed their absolute max rating and kill them. If you’ve got mixed 3.3 V and 5 V logic, use the right regulator (buck or LDO for 3.3 V, boost for 5 V) and add proper decoupling and level shifting. It keeps your chips safe, your logic stable, and avoids turning your Portable project into a post-mortem project. | |||||
| Answer to: Suggestions for a Handheld or Compact Oscilloscope? | 4 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. | |||||
| DIY an RF power meter Based on STM32F103 + MAX4003 | 4 Relevance | 3 months ago | anselbevier | Hardware/Schematic | |
| ... for beginners who are new to RF like me, and even the cheapest RF power meters cost hundreds of RMB. For electronics enthusiasts who follow the principle of "spend when you should, save when you can", DIYing an RF power meter is a great alternative. The first step WAs to define the functions and design the hardware circuit. To test RF power, a chip called a detector is required. I had not found a suitable option for a long time as it WAs my first time working with an RF detector, until I saw the power detection module on the E25-C test baseboard, which use ... | |||||
| RE: Li-ion vs. Li-Po Batteries: Which One Should I Choose? | 4 Relevance | 1 year ago | Admin | Theoretical questions | |
| For a Portable IoT device, Li-ion is generally the better choice because of its higher energy density and longer lifespan. It’ll give you more runtime per charge and is easier to manage in terms of charging circuits and protection. That said, Li-Po can work for IoT devices, but it’s usually overkill unless you have specific design constraints—like needing a really thin form factor or a custom shape that standard Li-ion cells don’t fit. One area where Li-Po might make sense is if your device has occasional power spikes, since Li-Po batteries can handle higher discharge rates. | |||||
| RE: Li-ion vs. Li-Po Batteries: Which One Should I Choose? | 4 Relevance | 1 year ago | abhinav singh | Theoretical questions | |
| @ankunegi Thanks for the breakdown, That really clears up the main differences. I’m leaning toward Li-ion since my project doesn’t need super high discharge rates, and I’d rather have something more stable and long-lasting. That said, I am curious—have any of you used Li-Po in a general electronics project (not RC, drones, or high-power stuff)? Is it worth considering for something like a Portable IoT device, or would Li-ion still be the better choice? | |||||
