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| # | Post Title | Result Info | Date | User | Forum |
| Answer to: Why do people use Teensy for custom keyboards instead of Arduino boards? | 10 Relevance | 8 months ago | Harper | ESP32 | |
| The main reason Teensy is preferred for DIY keyboards is its native USB support. Unlike most Arduino boards (like Uno, Nano, Pro Mini) that use a separate USB-to-serial chip, Teensy’s microcontrollers handle USB directly. This allows them to appear as a true USB HID device (keyboard, mouse, MIDI, etc.) without extra work. On top of that, Teensy boards generally offer more flash, RAM, and faster processors, which makes them well-suited for complex keyboard firmware like QMK or TMK that require Custom layouts, macros, and lighting effects. The Arduino Uno/Nano can’t natively emulate a keyboard without workarounds, while Teensy supports it out of the box. | |||||
| Why do people use Teensy for custom keyboards instead of Arduino boards? | 7 Relevance | 8 months ago | electronic_God | ESP32 | |
| I’ve seen many DIY keyboard projects where people use a Teensy microcontroller rather than popular Arduino boards like the Uno, Nano, or Pro Mini. What makes the Teensy a better choice for keyboards? Is it related to USB support, performance, or something else. | |||||
| Answer to: Is Arduino still relevant in 2024? | 6 Relevance | 2 years ago | Jeffmon | Arduino | |
| ... size. The same can be said for all Arduino units. The UNO, NANO, MEGA etc are perfect as training aids and for those without the ability to produce pcbs but final products can be greatly reduced in size by using the ATMEL uController in Custom pubs. I WAs an advocate for the PIC chip series and indeed I still am but since discovering Arduino I have become a fan. As yet in Arduino I am still a beginner but I have 50 years experience in designing electronics. Cheers Jeff Monegal | |||||
| How can I safely power a BLDC motor from a hard disk drive? | 3 Relevance | 6 months ago | Anil_Tech | Theoretical questions | |
| I have a brushless DC motor taken from an old hard disk drive and I WAnt to power it safely for testing or small DIY applications. Since these motors are usually designed for specific control circuits, I’m not sure about the correct voltage, current, and driving method. What’s the safest WAy to power and control a hard drive BLDC motor? Should I use a dedicated ESC, a Custom driver circuit, or a microcontroller-based solution?Any tips for determining the correct pinout and avoiding damage to the motor would also be helpful. | |||||
| RE: ESP32-C3 vs ESP32-S3 — which one to go with? | 3 Relevance | 8 months ago | Bhavish | ESP32 | |
| Nicely explained! Do you know if the ESP32-C3’s USB Serial/JTAG can be extended to support HID with Custom firmware, or is it strictly limited to debugging and flashing? | |||||
| Answer to: ESP32-C3 vs ESP32-S3 — which one to go with? | 3 Relevance | 8 months ago | Jignesh | ESP32 | |
| Both the ESP32-C3 and ESP32-S3 feature native USB support, but their capabilities differ significantly. The ESP32-C3 offers a USB Serial/JTAG interface that works well for flashing, debugging, and simple USB device functions, but it’s somewhat limited if you WAnt to go beyond basic applications. In contrast, the ESP32-S3 includes full-speed native USB OTG support, allowing it to act as both a USB device and a USB host. This makes it far more suitable for HID or Custom USB projects like keyboards, mice, or other USB gadgets. Additionally, the S3 provides mo ... | |||||
| ESP32-C3 vs ESP32-S3 — which one to go with? | 3 Relevance | 8 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? | |||||
| RE: Li-ion vs. Li-Po Batteries: Which One Should I Choose? | 3 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: Is Arduino still relevant in 2024? | 3 Relevance | 2 years ago | Harper | Arduino | |
| I totally agree with Jeff. Building a Custom PCB including a microcontroller chip for a personal project such as automating your room is one thing and you may even save a few bucks than buying the dev board separately. But when you WAnt to sell this product to consumers that's a whole different story. You can't possibly think that assembling some parts on 10 PCBs and saving money is anything like doing business. It takes a lot to create a profitable business out of this. | |||||
| Answer to: Raspberry Pi Pico vs ESP32? | 3 Relevance | 11 months ago | DabieTech | RPi Pico | |
| If you prefer a board that maintains a workflow similar to the Arduino Uno or Nano, the Raspberry Pi Pico offers a familiar development experience. It supports both C/C++ and MicroPython, making it a great option for experimenting with new programming environments while retaining a simple and straightforward approach to hardware control. Its Programmable I/O (PIO) feature also opens the door to Custom protocol development and precise timing applications, which aren’t easily achievable on traditional Arduino boards. On the other hand, if you're ready to explore more advanced capabilities such as Wi-Fi and Bluetooth connectivity, multitasking, or real-time data streaming, the ESP32 provides significantly more flexibility. It supports multiple programming environments—including the Arduino IDE—while offering powerful hardware features like dual-core processing, built-in wireless communication, touch sensors, and high-resolution ADCs. While the development process might initially seem more involved due to the richer feature set, the ESP32 is well-suited for complex or connected projects and offers long-term value for those interested in expanding their skill set. | |||||
| Answer to: Creative Ways to Use a Relay Module? | 3 Relevance | 12 months ago | Nitin arora | Theoretical questions | |
| Relay modules are incredibly versatile and can be used in many creative and practical applications. Below are some ideas beyond just turning lights on and off: 1. Home Automation:Use a relay module to automate household appliances like fans, coffee makers, or even a WAter heater. These can be triggered using a microcontroller, voice commands (via Alexa or Google Assistant), or a mobile app. 2. Smart Irrigation System:Control WAter pumps or solenoid valves in a garden or farm setup. A soil moisture sensor can activate the relay to start WAtering only when n ... | |||||
| Answer to: What are your opinions about Teensy boards? | 3 Relevance | 1 year ago | Admin | Arduino | |
| Teensy boards are incredible, especially for projects that need more power or advanced features. Here’s how they compare to Arduino: Performance: Teensy boards (like Teensy 4.1) have significantly more processing power. For example, Teensy 4.1 runs at 600 MHz, compared to Arduino Uno’s 16 MHz. They’re great for applications like real-time audio processing, high-speed data acquisition, or complex robotics. Features: Teensy supports USB HID devices out of the box, so you can create Custom keyboards, MIDI controllers, or gamepads. It has more RAM, Flash memory, and better peripherals compared to most Arduino boards. Ease of Use: Teensy integrates well with the Arduino IDE via the Teensyduino plugin, so transitioning from Arduino is pretty seamless. However, it does require a slightly steeper learning curve if you’re using its advanced features. If you’re working on high-performance or resource-heavy projects, Teensy is absolutely worth it | |||||
| Answer to: Arduino UNO R4 Wi-Fi Project ideas! | 3 Relevance | 1 year ago | Yvette | Arduino | |
| Here is the list of UNO R4 WiFi projects I found during my research: 1. Weather Station Using Arduino UNO R4 WiFi & VisuinoBuild a weather station to monitor temperature, humidity, and pressure using sensors. The data is displayed and updated in real time using Visuino software.Project Link: Weather Station Project 2. Arduino UNO R4 WiFi ExperimentsExplore multiple small projects to familiarize yourself with the UNO R4 WiFi, including controlling the onboard LED matrix and creating simple WiFi apps.Project Link: UNO R4 WiFi Experiments 3. Home Automation with Web ServerSet up a home automation system using a local web server hosted on the Arduino UNO R4 WiFi. Control home appliances remotely without relying on third-party IoT platforms.Project Link: Home Automation System 4. LED Matrix AnimationsLearn how to program the built-in 12x8 LED matrix on the UNO R4 WiFi to display Custom animations and graphics. A great project for beginners to practice coding and LED control.Project Link: LED Matrix Programming 5. Smartphone-like Device with AppsTransform the Arduino UNO R4 WiFi into a smartphone-like device with multiple apps, a keyboard, and cloud sync. An innovative project showcasing the board's capabilities.Project Link: Smartphone-like Device Project 6. SparkFun Qwiic Kit IntegrationConnect various sensors and components using the SparkFun Qwiic Kit with the Arduino UNO R4 WiFi. This guide is ideal for experimenting with multiple peripherals.Project Link: SparkFun Qwiic Kit Guide P.S.: I tried some of these not all. | |||||
| RE: Why are resistors in parallel preferred over a single resistor in some circuits? | 3 Relevance | 1 year ago | Chiris | Circuits and Projects | |
| @bryan Using multiple resistors in parallel instead of a single resistor can offer several advantages, depending on the specific requirements of the circuit. Here are some key benefits and scenarios where this technique is commonly applied: 1. Power Dissipation: Advantage: When resistors are connected in parallel, the overall power dissipation is shared between the individual resistors. This can prevent overheating or excessive power dissipation in a single resistor, especially in high-power applications. Example: In power supplies or motor driver circuits, where large amounts of current flow through resistors, parallel resistors help distribute the heat more evenly, preventing one resistor from getting too hot and potentially burning out. 2. Improved Thermal Management: Advantage: Distributing the current across multiple resistors can help manage heat more effectively. A single high-power resistor may have limitations on how much power it can dissipate before it reaches unsafe temperatures. By using parallel resistors, the heat is spread out, improving overall thermal performance. Example: In high-power resistor networks used in voltage dividers or current sensing, parallel resistors allow better thermal management without the need for specialized heat sinks. 3. Availability of Components: Advantage: It may be more practical or cost-effective to use multiple standard-value resistors than to source a single resistor with the required value, especially in cases where a precise resistance value is not readily available in a high-power rating. Example: Sometimes a designer may need a resistor with a specific value that is not commonly available, but by combining resistors of different standard values in parallel, the desired resistance can be approximated. This can be more convenient than ordering a Custom resistor. 4. Increased Power Rating: Advantage: Multiple resistors in parallel increase the total power handling capability of the resistor network. The power rating of the parallel combination is effectively the sum of the individual power ratings of each resistor. Example: For example, two resistors each rated for 1W in parallel can handle up to 2W of power in total, which would not be possible with a single 1W resistor. 5. Tolerance and Precision: Advantage: In some cases, using multiple resistors can help achieve a more precise overall resistance value, especially if high tolerance resistors are used in parallel. The parallel combination may help average out the tolerance errors of individual resistors, leading to a more predictable and consistent resistance. Example: In precision circuits, such as voltage dividers in analog signal processing, multiple resistors with tight tolerances might be combined to achieve the desired resistance value with reduced error margins. 6. Redundancy and Reliability: Advantage: Using parallel resistors can improve the reliability of the circuit. If one resistor fails (e.g., due to overheating), the remaining resistors in the parallel configuration can continue to carry the current, which can help prevent a complete circuit failure. Example: This is especially useful in mission-critical applications where reliability is key, such as in automotive or aerospace circuits. Common Applications: Power Dissipation: Power supplies, motor drivers, and high-current load resistors. Thermal Management: Voltage dividers and high-power applications. Precision Circuits: Applications where multiple standard resistors are used to approximate a desired resistance with minimal tolerance error. Redundancy: Safety-critical applications where resistor failure could compromise circuit performance. Conclusion: Using resistors in parallel is a useful technique, especially when dealing with high power, thermal management, or component availability. It allows for better distribution of power, increased reliability, and often better thermal performance. While it might seem simpler to just use a single resistor, the flexibility, safety, and performance benefits make this approach preferable in certain scenarios. | |||||
