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| # | Post Title | Result Info | Date | User | Forum |
| Answer to: Are there any Arduino-compatible Wi-Fi modules that support 5GHz? | 11 Relevance | 1 year ago | TechPulse | Arduino | |
| You see, most of the Mainstream boards don't Support it, there are a few options: ESP32-C6 and ESP32-C5 (newer chips by Espressif) are designed to Support both 2.4GHz and 5GHz. However, they are relatively new and not yet as widely available or Supported in the Arduino ecosystem as the original ESP32. Other options include using more powerful SBCs (Single-Board Computers) like Raspberry Pi, which can Support dual-band Wi-Fi and integrate with Arduino if needed. | |||||
| Are there any Arduino-compatible Wi-Fi modules that support 5GHz? | 8 Relevance | 1 year ago | Jaden | Arduino | |
| I know that most Arduino-compatible Wi-Fi modules, such as the ESP8266 and ESP32, operate on the 2.4GHz frequency. However, is there a WAy to connect such boards to a 5GHz Wi-Fi network? Are there any modules that Support 5GHz, or is 2.4GHz the only option? I would like to understand this in detail, so please help me. | |||||
| analogWrite() Used on Digital Pins Instead of Analog Pins? | 7 Relevance | 2 years ago | Paul | Programming | |
| I'm new to Arduino and I'm a bit confused about the analogWrite() function. From what I understand, the analogWrite() command is used to generate a PWM (Pulse Width Modulation) signal, which can be used to control devices like LEDs and motors. However, I noticed that this function is used on Digital pins that Support PWM, rather than the analog pins. Why is the analogWrite() command used on PWM Digital pins and not on analog pins even though the command name suggest it work for analog? It would be great if someone could explain the technical reasons behind this. | |||||
| Is it okay to power digital ICs directly from a Li-ion battery, or do I need regulation? | 7 Relevance | 10 months ago | Suraj | Theoretical questions | |
| My circuit includes a few Digital ICs, and I’m planning to power the whole thing using a single Li-ion battery (nominal 3.7V, full charge around 4.2V). I’m wondering if it’s safe to power Digital ICs directly from the battery, or if I should add a voltage regulator in between. Some of the ICs I’m using are rated for 3.3V or 5V, and I’m not sure how much tolerance they have. Is regulation absolutely necessary in this case, or are there scenarios where a Li-ion can safely power Digital components directly? Would love to hear how others approach this. | |||||
| Maximum current limitation of a digital pin on UNO | 6 Relevance | 2 years ago | Harper | Hardware/Schematic | |
| Hey folks, I'm new to Arduino and tinkering with Digital pins for a project. I'm trying to control a DC motor that I've hooked up to one of the Digital pins. I've heard it's important to stay within the current limits of the pins, around 40mA per pin. Can someone confirm this for me? And also, what happens if I exceed this limit while powering the motor? Will it damage my board? | |||||
| Answer to: Can I use Analog pins as digital output pin? | 10 Relevance | 9 months ago | Paul | Programming | |
| Yes, on Arduino boards the analog pins can also function as Digital I/O pins. Each analog pin has a Digital pin number assigned internally (for example, on Arduino Uno A0 = D14, A1 = D15, and so on). To use them as Digital outputs, you simply use the same commands as with normal Digital pins: pinMode(A0, OUTPUT); DigitalWrite(A0, HIGH); DigitalWrite(A0, LOW); Here, A0 is used directly, but you can also refer to it by its Digital pin number (like 14 for A0). This allows you to extend the number of available Digital I/O pins on your Arduino. | |||||
| Answer to: analogWrite() Used on Digital Pins Instead of Analog Pins? | 9 Relevance | 2 years ago | Admin | Programming | |
| ... the Digital pins ON and OFF at a very high frequency creating a dummy analog signal. And there are 6 Digital pins on UNO that Supports this behavior- with a "~" symbol next to them (like 3, 5, 6, 9, 10, 11) When you use analogWrite(pin, value), you're controlling the duty cycle of the PWM signal A value of 0 means the pin is off all the time. A value of 255 means the pin is on all the time. Values in between control how long the pin stays on during each cycle, effectively simulating an analog voltage between 0 and 5V. So analogWrite function has nothing ... | |||||
| 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. | |||||
| Can I use Analog pins as digital output pin? | 4 Relevance | 11 months ago | Rahav | Programming | |
| Is it possible to use analog pins as Digital output? If yes, how to do this? I mean what command should I type? | |||||
| ESP32-C3 vs ESP32-S3 — which one to go with? | 3 Relevance | 9 months ago | zaid | ESP32 | |
| I need a board with native USB Support for HID or custom USB projects, and I’m trying to decide between the ESP32-C3 and ESP32-S3. Do both Support native USB, and which one is more reliable for this purpose? | |||||
| Answer to: Is it okay to power digital ICs directly from a Li-ion battery, or do I need regulation? | 3 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. | |||||
| What Does a Decoder Do in Digital Electronics? | 3 Relevance | 12 months ago | Rahav | Theoretical questions | |
| I'm learning about logic gates and a bit confused. How does a decoder turn binary into a single output? And how do multiplexers use select lines to choose an input? | |||||
| RE: analogWrite() Used on Digital Pins Instead of Analog Pins? | 3 Relevance | 2 years ago | Admin | Programming | |
| @catelectronics Thanks for clarifying this. | |||||
| RE: Maximum current limitation of a digital pin on UNO | 3 Relevance | 2 years ago | Admin | Hardware/Schematic | |
| You can use a transistor or a Mosfet. You would still need external supply though. | |||||
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