Why Do Only Specific Arduinos Support the Keyboard and Mouse Libraries?
Another option is to use the PS2Keyboard library, a PS2 connector and a PS2-to-USB converter. You will need only two digital pin of your Arduino and have keyboard solutionâ€¢ Related QuestionsPorting the FastNoise c library to DueThe workaround is in the issue found by Jot.In file C:UsersaaaaaaAppDataLocalArduino15packagesarduinotoolsarm-none-eabi-gcc4.8.3-2014q1arm-none-eabiincludec4.8.3cstdio comment the line#undef printfand it will compile------Learning micro-controller programming closedI would say yes. At the lowest level in terms of robotic project development, you need to interface with hardware, e.g. sensors, motors, etc. So there's always demand in those area. As of if ARM uCs are worth learning, I would say yes also, since they are the most popular uCs on the market, you can find them on many platforms------Isolate 2 variables in 2 formulasIf the angles are in degrees, you are in luck!Remember, $$cos(y-90^circ) sin(y)sin(y-90^circ)-cos(y)$$So, your equations become$$Acos x Csin y BCsin y - Asin x D$$You can now use $sin^2 x cos^2 x$ and then first extract $sin y$ (and out of that, $y$).------Updating an Ender 3 V2After looking around for a bit in Cura. You can update it via Cura.Start by going to your printer -> Manage printerThen there is the option to update firmware. You must plug the printer in first------HC-06 Bluetooth RX & TX voltage (3v3 || 5v)About the MAX232, I have a Dwengo (similar to Arduino) and to use the HC06 I have to disconnect the serial port(RS232) else I short circuit my HC06.After some googling, MAX232 is simply the name of that chip which is required to convert your TX/RX from your bluetooth module to something usable by Arduino.Source: ------Avahi and Zeroconf Servers found by every application, but not by Safariok, so here I go answering my own question. I have Sophos anti virus installed because I am paranoid ;)I saw some log entries not really related to the web service on the iMac. To make a long story short, disabling Web Protection in Sophos Anti Virus made the above phenomenon disappear, straight away...------How to control 2 servos at same time in sync?Spehro's answer is the most obvious. But note that there is no such thing as identical servos. You may stress them if you connect them through a stiff connection. If you want to have two mechanical parts make the same movement the proper solution is to connect them mechanically, rather than have two servos doing the same action.------What protocols and tools does Arduino Due use for flashing and debugging?The Due (more specifically the SAM3X) uses its own proprietary protocol. It's all embedded in the bootloader, which is hard wired in the ROM and can never be changed (idiotic if you ask me).I know of two systems for communicating with it. Atmel's SAM-BA program, and the open source BOSSA. The command line version of BOSSA (bossac) is used by the Arduino IDE for programming------Arm development board with lots of PWMs closedAtmel sam3x8e (used on the Arduino Due) has 12 PWM outputs, loads of memory, USB, the works. It is a bit expensive, though. You'll have to pay at least 10 USD. The AT32UC3L032 may be a better option if you want cheap------Using Arduino sensors with an STM32Yes, of course you can use those sensors. The sensors are not Arduino exclusive, just look up the datasheets to the parts and you should have no problem using them.To make it easier, you can get an STM32 Nucleo board, which has the same header pin configuration as an Arduino for quick and easy prototyping------How to get HTTPS on Arduino?MCUs mounted on Arduinos don't have the horse power to handle https connections.Yn does handle https on the linux side, with software like curl, wget or python. Your sketch can just delegate the task to the linux side.While curl works fine, despite having python preinstalled, you need to manually install python-openssl, since it's not available out of the box (due to disk space constraints)------How fast is an IO interrupt in Linux versus bare metal? (ARM, Raspberry Pi)I just read the article. With respect to kernel module. I agree it may be power saving. I was also thinking it may be because of other interrupts.Kernel module should be as fast as bare metal, if conditions are the same: same power state, same other interrupts.Beware kernel module can crash your system, so keep it small and simple.------Mathematica on Surface Pro X (ARM64)?Mathematica does not currently support Windows on ARM. The system requirements are here: addition to what is listed on the systems requirements page, Mathematica works on Linux on the Raspberry Pi computer, which uses a 32-bit ARM architecture: wolfram.com/raspberry-pi/This is a Linux version, not a Windows one------How to calculate phase shift between two square waveforms with Arduino DUEEven if your code worked perfectly, with zero processing latency, you still are working with a timer resolution of only 1 microsecond. If I did my math correctly, that means at 50 kHz, the smallest phase difference you can detect is around 18 degrees. At 100 MHz, 1 microsecond is 100 complete cycles. You probably want to look into hardware specifically designed for phase detection------Simple Arduino Serial ArithmeticDo you mean to repeat num10; in loop()?It is only reading one character per loop() because loop() happens much faster than Serial.available() and Serial.read(). Do the reporting and clearing when you receive some sort of separator/non-digit character------Differences in using c user-defined functions on PC and on ARMYou never say what your error actually is, but I suspect that because your function does nothing in main, it is being optimized out by your compiler. Try compiling with optimization turned off------Playing with this SoCThe easiest way is to buy an 'evaluation board', 'evaluation kit' or 'development board'. The Arduino is a popular development board for the Atmega328. A quick search for 'DaVinci Digital Media Processor evaluation board' brings some up. What you need in terms of external programmers will vary with what board you get------Use the same pin as digital output and analog input with an ARM (sam3x / Arduino Due)Here is a work around: Tie two pins electrically together. Then use the digital pin to set a HIGH or LOW level and switch the digital pin to INPUT (tri-state) while you read the analog voltage from the analog pin------Table goes out of order due to label and captionSince you do not provide an MWE, I can only guess what might have gone wrong. You probably want to change the order of caption... and endcenter. And/or, as @Werner says, you may want to replace the center environments by a centering before begintabular. This will reduce the space between the tables and the rest------Why does Arduino SD card module only work when multimeter attached?I have the same card from eBay, and it works OK. If you do a search on Arduino Playground, you will find lots of questions about this module.Here is my wiring on the Arduino Mega 2560, just in case you need it:------Why not just combine the Arduino proposal, with the existing Raspberry Pi site?The Arduino is not similar to the RPi at all. For starters, the RPi runs Linux and other operating systems which the Arduino doesn't.Beside, Arduino questions are already on-topic at EE.SE.------No ttyACM0 for Arduino Nano on Ubuntu. How can I attach it?The nano has a CH34x USB to serial converter chip. Here is what a CH34x looks like on my Ubuntu Intel/AMD system. Note Linux creates /dev/ttyUSB0, not /dev/ttyACM0.Assuming your kernel supports the CH34x, you could try adding a udev rule to load the driver. Or use modprobe to force load the driver------Arduino & ARM - Replacement for avr-libc?I found the official library here: I have finally understood understand how exactly Arduino accesses specific ARM features. It includes sam.h file which in turn contains Cortex Microcontroller Software Interface Standard. With this cool interface anyone can use so many cool features:------PWM in raspberry with L293DYou do not modulate the PWM frequency to change motor speed.You change the PWM dutycycle.You set a dutycycle of 0% for off, 100% for fully on, 50% for half on, etc.If the permitted dutycycle range is 0 to 255 that would be 0 (0%), 255 (100%), and 128 (50%).If this isn't what you are asking you need to clarify your question------Connecting hc-05(bluetooth) with clicker2 with STM32(ARM)I have fixed this problem, solution was to edit project configuration in MikroC IDE, there were few premade schemes that i tried and one of them worked, everything works great now.Project configuration can be changed from Project -> Edit Project and there will"Load Scheme" button on right. There by default it will show you few premade schemes, select one for your microprocessor.------Why do P/PI/PID Controllers exist when we can manually code in software (say an Arduino). closedAnalog computing has its advantages:It is robust - no software bugs to worry about.It is intuitive.It is fast - calculation is done real time, short of delays in the circuit.It can be done inexpensively.It can be done without those high tech mumbo jumbo.....All make them suitable for certainly applications------Parse data from sensor without delimetersI have used the source code available on the Medlab web, and do some "modifications" to be Arduino compatible.I dont wanna the waveform data, because my final program will do the waveforms acording the data received, so I don't "listen" to the waveform packet------28BYJ-48 Gear/Cog Attachment GuidanceA 5mm Shaft Pinion Gear is where I'm going with a project I'm working on. It may work for you. ------Using ethernet with a cameraNo. Assuming your camera has an analog video output, you need a way to sample, digitize, encode/compress and transmit it over the ethernet. All of these are far beyond the capabilities of Arduino------How to send data from PC to arduino?I assume you want to store multiple values in the text file, and thenhave the Arduino IDE (not the Arduino itself) read the file and insertthe data into your sketch. If this is really what your question isabout, a quick and dirty solution would be as follows:------Existing UART libraries on pic/atmega/The easiest way to use the UART in a PIC 16 is to work with the MCC. I guess you also could use it as a 9 Bit UART.But even if you use the MCC you had to learn a little bit more about the hardware than using an Arduino.------What can I do to avoid an 'Error: unrecognized option -mmcuavr5' when I try to Verify sketch in Arduino IDE on Raspbian?As you have discovered the version in the repository is hopelessly outdated (and will NEVER be fixed, because of some Debian politics).You can safely purge the installation without losing any of your files.Just download the Linux ARM 32bits version from arduino.cc/en/Main/SoftwareSee stackexchange.com/a/44813/3879 for installation instructions------Absolute encoder vs Accelerometer for calculating anglesIs this accuracy feasible?possible with high accuracy encoders but unlikely with accelerometers - they also drift too much.Also, cos(xy) can be decomposed into cos/sin(x) and (y), making a recursive calculation possible. that can be handy if you are using a lut to calculate sin/cos.------UART communication between Cypress FM4 (Cortex M4) and ArduinoFound the problem thanks to ThreePhaseEel. The schematic document (p6) shows that a connector CN9 has Pin109 and Pin110, while for wiring I looked into Starter Kit Guide (p8), which shows Pin106 and Pin107. So, basically I have to use another UART channel, in this case - ch.12. Changes I made:SetPinFunc_SIN12_0(); SetPinFunc_SOT12_0(); UartCh2 &UART12#define PDL_PERIPHERAL_ENABLE_MFS2 PDL_ON------How to drive 50 LED from a 3.3V MCUThere are multiple ways of effectively (less pins- more leds) driving 50 LEDs. Here are someI am sure you would not want to use all I/O pins of your Arduino for controlling LEDs only :)Your question is kind of unclear.------Headlessly Compiling and Uploading Arduino Programs on an armhf PlatformThe Arduino IDE is GUI only. It can not be ran from a command line alone. To begin with check out PlayGround. Basically you need to compile from a make file, as an alternative to the IDE's GUI. There are plenty of other resources out there on this.------Arduino / Processing versus .NET Micro Framework? Best language? Best hardware?I just saw the Netduino which may be an interesting compromise for you. I have no idea of the system specs or details but it does appear to use .NET Micro so it sounds like a good way to at least try out that framework.------Advantages of 32-bit 48-96 Mhz microprocessors (such as in Arduino Due)David Kessner is correct. I would like to add the following.I agree that these days there is little reason not to use 32-bit MCUs. I would only use them 8-bit MCUs for 2 reasons: I like the ease of the PDIP package (no soldering required); I often don't need more power/complexity than what an 8-bit MCU can offer.The deal breaker is really the tools available.