Notifications
Clear all
Search result for: WA 0812 2782 5310 Biaya Untuk Membangun Plafon Gypsum Lampu Led Murah Paliyan Gunungkidul
| # | Post Title | Result Info | Date | User | Forum |
| How to use Arduino to read values from a potentiometer? | 2 Relevance | 11 months ago | catElectronics | Arduino | |
| I have a potentiometer and WAnt to use it to control a component like an Led or motor eventually, but for now, I just WAnt to read its values in the Serial Monitor using Arduino. How should I wire it, and what code should I use? | |||||
| Electret Microphone vs Condenser Microphone? | 2 Relevance | 1 year ago | Philippe | Theoretical questions | |
| hey everyone, I’m working on a security project where the system activates (e.g., triggers an alarm or lights up an Led) when it detects a loud sound, such as a clap or a door slam. While researching, I came across both electret and condenser microphones, but I’m unsure which one would be better for this application. Can anyone help me decide which microphone to use? | |||||
| Answer to: What exactly is PWM resolution ? | 3 Relevance | 1 year ago | catElectronics | Hardware/Schematic | |
| To put this PWM resolution concept into a practical context: If you’re dimming an Led with an Arduino UNO’s 8-bit PWM, you might see noticeable brightness steps when changing the duty cycle. This is because each step is about 0.4% of the total brightness. With the ESP32’s 16-bit PWM, each step is only 0.0015%, so the Led brightness change is much smoother and almost imperceptible. This is crucial if you’re working on projects that require precise control, like mood lighting or audio signal modulation. But keep in mind, that the lower frequency at higher resolutions might introduce visible flicker in Leds, so you’ll need to find a balance between resolution and frequency depending on your application. | |||||
| Answer to: Is It Safe to Control 15 LEDs Directly from Arduino Pins? | 3 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 | |||||
| Bluetooth Speaker won't turn on | 2 Relevance | 3 months ago | servitec | Theoretical questions | |
| I know is not probably the best place for a newbie, the AI somehow helps but I definitely prefer go with the experts. I am fascinated with the laws of electronic, but more than ever I know it demands a serious compromise to enter this amazing world. Board Description: HXYT-A0-665-REV1.1 (A bluetooth speaker)The speaker wont turn on, is doing nothing.SIDE ACompt.1= 56HS5, B310B (5 pins)Compt.2= J6 (3 pins) ?Compt.3 4004A, 33580KMSide BCompt.1= 4R7 (inductor)Compt.2= SS54 (SCHOTTKY BARRIER RECTIFIER)Compt.3= M8889, Y4D371 (8 Pins) ?Compt.4 PNSA15E7E, X0B253, 2359 --When connected the battery in the terminals, it shows normal (aprox 5V)--I tested the negative and positive spots in reverse of battery connector and off course no shorted--When first tested pin C of power button, it shows 0.840V, after some tests is showing 2.4V when first push the power button it drops to 0V but now no more drops and it gets 2.4 V no matter if push the power button--Tested all capacitors of Side A and all of them are ok, also the capacitor X which is connected to the Compt.3, the component 3 seems to be a DC-DC converter, the capacitor X is in parallel of pins 4 and 6. When checking the VIN in Compt.3 (pin5) is ok, but when I push the power button there is no VOUT (pin1)--When connected to the charger, the device’s charging Led turns on and the board battery terminals shows the charging voltage. In Side B We can see the battery port, the left pin is the + one, that pin goes to the compt.1 through pad named in the image as “pad positive pin”, then the compt.1 is connected to the compt.2 (I tested both and they seem to be ok). I tested all capacitors in Side B, all of them are ok except capacitor X. The capacitor X is connected to the pin that is marked with a yellow face sticker in compt.4, and I'd like to have the PCB's information or at least the compt.4's (or the M8889) in order to know that capacitor values.What more testing do you recommend me to apply, what is component 2 in side A, what is component 4 in side B, is it a multiplexer? What is component 3 in side B, is it a switch IC? What recommendations can you give me when is hard to find a component by its code? Attachment : Side-A.jpg | |||||
| RE: ESP32 not detected. No COM port displayed on my PC | 2 Relevance | 1 year ago | Sophie | ESP32 | |
| @amelia Yes, I tried a mobile phone charger, but the Led behaves exactly the same. | |||||
| Answer to: ESP32 not detected. No COM port displayed on my PC | 2 Relevance | 1 year ago | Amelia | ESP32 | |
| I had a similar issue with my ESP32 when I first started using it. In my case, the problem WAs the CP2102 driver. After installing the correct driver, the COM port appeared instantly. If you’re using Windows: Go to the Device Manager. Look for a device under "Other Devices" or "Unknown Devices" when you plug in the ESP32. Install the driver manually by downloading it from Silicon Labs (for CP2102) or (for CH340). If the Led still turns off after all this, it could also be a power issue. Do you have an external 5V power source to test it? | |||||
| Answer to: STM32 vs Arduino: Which One is Better? | 2 Relevance | 1 year ago | electronicb_brain | Hardware/Schematic | |
| I think it really depends on the type of projects you're working on. If you're mainly doing simple Led displays, motor control, or basic IoT projects, Arduino boards are perfect. They’re simple and get the job done without much hassle. But if you WAnt to dive into audio processing, real-time data acquisition, or anything that requires heavy computation, STM32 is a beast. I switched over when I started working on a DIY oscilloscope project because I needed faster ADC and more memory. | |||||
| Answer to: Good Arduino IoT projects for a beginner? | 2 Relevance | 10 months ago | Jignesh | Arduino | |
| ... thresholds + cloud alerts. 2. Smart Plant Mood Monitor Combine a soil moisture sensor, light sensor, and temp sensor. Based on readings, display your plant’s "mood" using emojis on an OLED or in a mobile app. Could also send WAtering reminders if the soil is dry. 3. Wi-Fi Jammer Detector With just an ESP8266, you can scan Wi-Fi channels and detect when there's suspicious interference or sudden drops in signal — send an alert if something looks off. Simple but cool networking concept. 4. IoT Trash Bin Level Monitor Use an ultrasonic sensor to measure h ... | |||||
| RE: Need help with the working of this circuit | 2 Relevance | 2 years ago | Sebastian | Circuits and Projects | |
| @nathan If you look closely- when the button is pressed, the capacitor is actually connected across the battery. This ensures that there are no voltage fluctuations across the load(LED + transistor). Diodes are there just for discharging the capacitor without damaging the transistor. | |||||
| RE: Need help with the working of this circuit | 2 Relevance | 2 years ago | nathan | Circuits and Projects | |
| Thank you for the detailed analysis of the circuit and each component used. But can you explain this where you said, "The 1N4148 diode prevents current from flowing back into the capacitor, ensuring that the capacitor discharges only towards the Led." Based on this the polarity of the diode should be in reverse because in its current state when it discharges, the current can easily flow through the diode. Also, why use a capacitor here? Even without it, the circuit will work just fine, right? | |||||
| How can I run multiple tasks at once without using delay() in Arduino? | 2 Relevance | 10 months ago | J.Smith | Arduino | |
| I'm working on an Arduino project where I need to run multiple tasks simultaneously—for example, blinking an Led, reading a sensor, and checking for button input. Initially, I used delay() for timing, but I realized it blocks the program and prevents other tasks from running smoothly. What is the recommended WAy to handle timing and run multiple tasks without using delay()?Should I use millis() or is there a better approach like using timers or a task scheduler? I'd appreciate examples or tips on how to structure the code for multitasking in Arduino. | |||||
| Answer to: Raspberry Pi Pico Vs Arduino Uno? | 2 Relevance | 11 months ago | Daniel | Arduino | |
| I've used the Arduino Uno and the Raspberry Pi Pico, and I’d happily share my thoughts. If you're just getting started and have zero experience, the Arduino Uno is a great choice. It’s super beginner-friendly, has a huge community, and tons of tutorials that WAlk you through everything step by step—from blinking an Led to using sensors and motors. The Arduino IDE is also very simple to set up and use. On the other hand, the Raspberry Pi Pico is more powerful and supports MicroPython, which is great if you're interested in Python. However, the setup process ... | |||||
