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Search result for: WA 0812 2782 5310 Biaya Untuk Membangun Plafon Gypsum Lampu Led Murah Paliyan Gunungkidul
| # | Post Title | Result Info | Date | User | Forum |
| ESP32 not detected. No COM port displayed on my PC | 3 Relevance | 1 year ago | Sophie | ESP32 | |
| Hey guys, I recently purchased an ESP32-Wroom-32 dev board(38 pins). When I connect it to the laptop using a USB, nothing happens. The COM port shows nothing and ESP32 is not detected by the system. The power Led on ESP32 flashes two to three times before going off. Also, when pressing the Reset button, the Led flashes and then turns off. Any help would be appreciated. | |||||
| RE: new to electronics and needing some guidance with a circuit . 555 LED lights | 4 Relevance | 10 months ago | Admin | Circuits and Projects | |
| Hi! I checked the circuit on TinkerCad. There were some mistakes, like wrong capacitor connection and value. Here's the edited one: A couple of points worth mentioning here: 1. On running the simulation, TinkerCad shows too much current drawn from the IC and may damage it. 2. This is true if you are running it continuously. In this case, all Leds are ON at the same time for a very small duration, so it somehow works. 3. Still, not a good idea in the long run. I will suggest: 1. Use a 220-ohm resistor instead of 100. And connect two Leds per pin to only one resistor. Meaning a total of 8 resistors for an 8-pin. This will reduce the overall current draw from the IC and per pin as well. 2. Better use 330 ohm..but not that it will reduce the brightness of the Leds further. | |||||
| RE: new to electronics and needing some guidance with a circuit . 555 LED lights | 4 Relevance | 10 months ago | basilwatson | Circuits and Projects | |
| @ankunegi Thank you Really appreciative of the reply. Interesting about "Ai" ,,,i asked it many times and the circuits I got back even I could see were Junk So here is the Tinkercad link ... No bread board, just in desperation , randomly joining things together to see if I get a response. I hope this link works .... Now bass usual for me ,,, I have probably , A; over looked the obvious ...B; done something stupid, Im looking forward to finding out .... My guess is Ive got the pins round the wrong WAy.... Thanks in advance Stephen | |||||
| Answer to: new to electronics and needing some guidance with a circuit . 555 LED lights | 4 Relevance | 10 months ago | Admin | Circuits and Projects | |
| Hi!Welcome to the world of Electronics 🙂Here are the answers to all of your questions:1. It's not possible to generate circuits using AI(at least as of now).2. Most of such circuits available online are copied from somewhere and then designed again. You will find a lot of circuits similar to each other online. 3. Can you trust these circuits? In most of the cases they are correct but it's better to simulate them first.4. In you particular case, the Led chaser circuit that you shared is correct. I checked from beginning to end. Seems okay. Although, if you have a stable 5 V power supply, you don't need the regulating circuit(L7805 one). Did you simulate the exact same circuit on TinkerCad? Can you share the design file here so that I can take a look. | |||||
| new to electronics and needing some guidance with a circuit . 555 LED lights | 4 Relevance | 10 months ago | basilwatson | Circuits and Projects | |
| Hi all New here ...so please bear with, as I find the ropes , First let me explain. Quite a bit on the distant side of yoof. Am a mechanical engineer who has spent considerable time playing with motorcycles, So im familiar with the " basics", Now that computers and such simulation software has become more available ,,,I decided to "upgrade", and have been playing with circuits. However, I think Im into this a bit deep, I modelled a Led lighting circuit using tinkercad, things flashed ... but didnt work, Then I noticed there were many "similar circuits " on line.... Heres, the question; Are these "ai generated circuits?" are the "use-able? and if so what am I doing wrong,,, are these value for the components valid? Ive never used a 555 chip before and while I understand how it works ,,,ive never actually used on,,, Thank you in advance ,,,any help is gratefully received Kind regards Stephen Attachment : audi-ind-crt-.PNG | |||||
| Program to toggle LED state with a single button? | 4 Relevance | 1 year ago | tricky_logic | Programming | |
| ... tried using digitalRead() in a simple if condition, but I suspect I need to debounce the button properly. Should I use delay(), or is there a better approach using millis()? Here’s my basic code: const int buttonPin = 2; const int LedPin = 13; bool LedState = false; void setup() { pinMode(buttonPin, INPUT); pinMode(ledPin, OUTPUT); } void loop() { if (digitalRead(buttonPin) == HIGH) { LedState = !ledState; digitalWrite(ledPin, LedState); delay(200); // Debounce delay? } } Is there a more reliable ... | |||||
| RE: Is It Safe to Control 15 LEDs Directly from Arduino Pins? | 3 Relevance | 2 years ago | Admin | Hardware/Schematic | |
| 1. Yes you can. But then you have to turn ON only one Led at a time. 2. It is simple. If each Led consumes 12mA we get, total current= 12X15 = 180mA, which is below the maximum rating. Now resistor value = 5V/12mA = 416 ohms. | |||||
| Motor driver not working properly | 2 Relevance | 2 months ago | Noochee | Arduino | |
| I built an obstacle avoiding robotic car using Arduino, dc motors and a motor driver(L293D) , ultrasonic sensor and servo, i added LCD, a buzzer, an Led and a bluetooth module, but it's getting overloaded i guess and it doesn't work, what do i do? | |||||
| Effect of PWM frequency on motors and LEDs | 2 Relevance | 8 months ago | Suraj | Theoretical questions | |
| How does PWM frequency affect motor speed control and Led dimming? For motors, does changing the frequency make any difference in smoothness or efficiency? And for Leds, how does frequency impact visible flicker or brightness perception? I’m also interested in knowing what frequency ranges are generally recommended for these applications. | |||||
| Answer to: Looking for Reliable Sites to Buy Display Modules | 2 Relevance | 8 months ago | Dinesh bhardwaj | Arduino | |
| For college projects, you can get reliable display modules from Adafruit, SparkFun, and Digi-Key. For budget-friendly options, Amazon and AliExpress offer plenty, but always check seller ratings. These sites cover LCD, OLED, and Led displays commonly used in student-level projects. If you’re in India, Robu.in is also a solid local option with good availability. | |||||
| Answer to: Difference Between delay() and millis() in Arduino? | 4 Relevance | 1 year ago | Sebastian | Programming | |
| ... simple tasks, like blinking an Led. millis(), on the other hand, doesn’t stop the program. It simply returns the number of milliseconds that have passed since the Arduino WAs powered on or reset. You can use it to keep track of time without pausing the rest of your code. When to use each: Use delay() if your program only has one task and you don’t mind it pausing everything else (e.g., blinking an Led with nothing else happening). Use millis() when you need your code to be non-blocking. This is essential for projects that involve multiple tasks happening ... | |||||
| Answer to: Ghosting or crosstalk in my matrix keypad or display? | 3 Relevance | 10 months ago | Divyam | Theoretical questions | |
| Ghosting in keypads and Led matrices is usually caused by missing diodes and incorrect scanning logic, not just electrical interference. For keypads, always add isolation diodes if you expect multiple simultaneous keypresses. For Led matrices, ensure you scan the display correctly and fast enough. In both cases, keep wiring tidy, and avoid crosstalk by separating signal lines. These steps will eliminate most ghosting and unintended behavior in matrix systems. | |||||
| Answer to: Suggestions for Good ATtiny85 Projects | 3 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. | |||||
| Looking for Reliable Sites to Buy Display Modules | 2 Relevance | 8 months ago | TechPulse | Arduino | |
| I need a particular LCD/OLED/LED display module for my project, but I haven’t been able to find it in local shops or through common suppliers. Can anyone suggest reliable places online where I could purchase this module or find an equivalent alternative? | |||||
| Ghosting or crosstalk in my matrix keypad or display? | 2 Relevance | 10 months ago | Roshan | Theoretical questions | |
| I'm experiencing ghosting or unexpected behavior when pressing keys on a matrix keypad, and I've also noticed similar issues in Led matrix displays. What typically causes ghosting or crosstalk in such matrix-based systems? Is it related to missing diodes, poor scanning logic, or electrical interference? How can I fix or prevent it? | |||||
