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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. | |||||
| How do you safely discharge a big capacitor? | 3 Relevance | 10 months ago | techy ishan | Theoretical questions | |
| I’ve been learning about capacitors, and one thing that keeps coming up is that large ones can still hold a charge even After the circuit is turned off. I don’t WAnt to accidentally shock myself or damage components. What’s the proper and safe WAy to discharge a large capacitor? Do people usually just use a resistor, or is there a specific method or tool that works best? | |||||
| Watchdog timer in microcontrollers? | 3 Relevance | 1 year ago | Janet | Arduino | |
| I’ve seen WAtchdog timers mentioned in microcontroller specs. After looking into it, I’m even more confused. I get that it’s supposed to reset the system if something goes wrong, but how exactly does it work, and when is it needed? Hoping to get some clarity on this. | |||||
| Answer to: Difference between EEPROM and Flash? | 3 Relevance | 1 year ago | Daniel | Hardware/Schematic | |
| Here’s how it is used practically: EEPROM: To store device-specific configurations, like sensor offsets or mode settings. These values are written during setup and rarely change After that. Flash: For storing firmware or read-only data like lookup tables. For example, in an IoT project, I store calibration data in EEPROM and preloaded HTML pages in Flash for the web server. If your data changes frequently, EEPROM is the better choice due to its higher write endurance. Just don’t forget to minimize unnecessary writes to prolong its lifespan | |||||
| Answer to: ESP32 vs RP2040 – Which is better after Arduino? | 7 Relevance | 1 year ago | Janet | ESP32 | |
| The table below will definitely give you an idea of what’s best for you, according to me: If your project needs wireless communication and more built-in features, the ESP32 is the better step forward.If you're experimenting on a budget or WAnt to dive deeper into hardware control, the RP2040 is also a great pick (especially the Pico W if you still WAnt Wi-Fi). Attachment : Screenshot-1583.png | |||||
| Answer to: Best way to manage real-time tasks in FreeRTOS? | 5 Relevance | 11 months ago | Amelia | Theoretical questions | |
| The best WAy to manage real-time tasks in FreeRTOS is to carefully structure your tasks based on timing requirements, priority levels, and resource usage. High-priority tasks should be reserved for time-critical operations, while less critical tasks can run at lower priorities. Use vTaskDelayUntil() instead of vTaskDelay() for periodic tasks to ensure consistent timing and avoid drift. Each task should have a well-defined responsibility and complete its job quickly to return control to the scheduler—long blocking operations or delays within tasks can lead ... | |||||
| Answer to: ESP32 not detected. No COM port displayed on my PC | 5 Relevance | 2 years ago | Admin | ESP32 | |
| Hey, this is a very common issue. Let’s troubleshoot: Check the USB Cable: First, make sure you’re using a data-capable USB cable. Some cables (like cheap ones for phone charging) only provide power and can’t transfer data. Try a different cable if you’re unsure. Drivers: Have you installed the necessary drivers? The ESP32 often requires the CP2102 or CH340 USB-to-serial drivers, depending on your board. You can download these from the manufacturer’s website or search for “ESP32 USB driver.” After downloading the drivers, manually install it(there will be a text file for instructions to follow.) COM Port Visibility: Open your Device Manager (Windows) or System Information (Mac) and check if the ESP32 shows up under Ports or USB Devices. If it's not there, take out the USB cable and insert it again while keeping the device manage window open. If you notice some changes, it's a good sign. So if it’s listed with an error, the drivers might not be properly installed. Power Issues: The fact that the LED turns off could indicate the board isn’t receiving stable power. Maybe either the port or connector is loose. Let me know how it goes After these steps! | |||||
| Why Fluke multimeters are so expensive? | 3 Relevance | 2 years ago | Bryan | Equipments | |
| hey everyone, My old multimeter got damaged After I accidentally dropped it, so I started searching online for a new one. I came across Fluke multimeters, but they seem much more expensive compared to other brands. Are they really worth the cost in terms of durability, accuracy, and features, or is it mostly about the brand name? | |||||
| What is EEPROM in Arduino and how to use it? | 3 Relevance | 2 years ago | techy ishan | Hardware/Schematic | |
| Hi everyone, I’m new to Arduino and would like to understand how EEPROM works. Can someone explain what EEPROM is and how it differs from other types of memory on the Arduino? I’d appreciate some guidance on how to store and retrieve data using EEPROM, especially to ensure the data remains After powering off the board. I’ve also read that EEPROM can only be programmed a limited number of times. Is that true? If so, could you explain a bit more about it? Thank you | |||||
| Answer to: What are interrupts in Arduino, and how are they used? | 5 Relevance | 11 months ago | Admin | Arduino | |
| ... to bake a cake. Your loop() function is carefully measuring flour, mixing ingredients, and so on. Now, what if the doorbell rings? Without interrupts (the loop() WAy): You'd have to finish a major step in your recipe (like mixing the batter) and then quickly run to the door to check if anyone is there. If your recipe step takes a long time, your visitor might get impatient and leave. This is called polling – repeatedly checking the state of something. With interrupts: The moment the doorbell rings, you'd immediately pause what you're doing (even if you're ... | |||||
| Answer to: What is EEPROM in Arduino and how to use it? | 5 Relevance | 2 years ago | Sebastian | Hardware/Schematic | |
| EEPROM (Electrically Erasable Programmable Read-Only Memory) allows you to store data even After the board is powered off. It's non-volatile. This makes it useful for storing things like settings, calibration values, or any data you WAnt to retain. Let's understand the different memory types in Arduino: SRAM: Works as temporary storage while the program is running. Data in SRAM is lost when the power is turned off. Flash Memory: The Arduino stores your program code here. Like EEPROM, flash memory is non-volatile, but you can't store or retrieve any data d ... | |||||
| Bluetooth Speaker won't turn on | 3 Relevance | 5 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 | |||||
