arduino-uno

问题 Hi i'm trying to access my wifi shield's ip address on the browser but I keep getting Oops! Google Chrome could not connect to "IP ADDRESS". Things I've done: 1.)Updated firmware on wifi shield using this link http://ohmyfarads.com/2013/11/11/updating-firmware-on-arduino-wifi-shield-for-dummies/ 2.) uploaded the wifi WPA sketch from arduino site. My connection is WPA2 3.) I switched between arduino IDE 1.02 and 1.05 but no luck with either 4.) I'm using an arduino uno board that is attached

问题 I am using Arduino Uno. I am reading a byte value from the EEPROM and storing the value in a variable of type char (1 byte). I want to print the value of the variable as a number (not to the corresponding ASCII code) to the Serial Monitor. For example consider char val = 5 . I want to see to the Serial Monitor 5 and not the ASCII value. I tried both Serial.print(val) and Serial.write(val) but the result is the same: it prints always the ASCII code. How can I print the value to the Serial

问题 Before you mark this question as duplicate, please note that I have already tried this, this & this I bought an Arduino UNO R3 & a SIM808 GSM/GPS shield recently. The RX of the Shield is connected to Pin 11 of Arduino, TX to Pin 10 with both the GNDs connected to each other. I have connected my Arduino to my computer with the USB & the shield is connected to an external power supply with a 12V Adapter. Additionally, I have connected the 3.3V of the Arduino to Vcc of the shield. Following is

问题 I am currently working on my mini-project under the domain "Internet of Things". I chose to design a wireless Notice board using a GSM module. I divided the project into two modules. First, the Arduino-LED board interface which perfectly completed. Second, GSM-Arduino interface. Basically, a message/SMS will be sent from the mobile phone to the GSM module and then we have to read that message from GSM module using Arduino. I am facing a problem here. The message is being sent to the GSM modem

问题 I'm using ArduinoJSON to write a couple of data points to my EEPROM on Arduino Uno. I'm running into a problem with getGroundedPR where I need to convert a uint8_t to a char to pass retrieved data into my JSON parser. This is my first time using EEPROM so I'm willing to bet there's a better way to do this. Should I continue to use JSON or is there a better way? I'm being cautious of the 10k write limit (give or take) on the EEPROM. the EEPROM read/write is commented out until I have my

问题 I'm trying to read sensor's value obtained from arduino and displaying it on labview using a pulse sensor and a DS18B20 (temperature sensor) however I need the while loop to go fast (around 50 ms) in order to get the waveform chart from the heart pulses but if it goes slower than a minute the values get mixed up (I get temperature instead of the analog sensor value and viceversa) any suggestions to fix this? I obtain the values in a serial.print separated by a comma, so I used a match pattern

问题 I'm not certain this is the right place to ask, but I've seen other Arduino threads on stackoverflow, so I just assume it's ok. My arduino uno-compatible board is not getting recognized. I tried it on windows 8 and on windows xp. When I open the device managers, there is just one entry called 'USB serial port' under the 'Ports (COM & LPT)' section. The Arduino, however, does blink when connected. I tried uninstalling the usb serial port drivers, or updating them, but both don't work: the

问题 I am using an arduino uno, logic level converter, adafruit Bicolor LED Matrix, a Raspberry pi, and a button but am having some issues. My goal is that when the button is pushed on the pi it sends a signal to the arduino Uno which will change the animation on the LED backpack. The issue is that the button must be held down right when the loop restarts and if you click it any other time it wont work, I think this is because I am using delay() which pauses everything. Is there any way to pause

问题 I'm doing a arduino project for my end year project.I'm making a smart glove for bike riders which can notify phone calls,Health tracking,Geo tracking and Navigation. I want to know is there any method I can get details about turn by turn navigation into my app. i.e :if google navigation said "turn left" get that details and display in my app. P.S:There is a product called Sneakair by easy jet shoes that auto vibrate when turn is arrived. If this is impossible tell me another idea that can

问题 I just started learning about micro controllers and I was not able to understand how we could introduce delays in the code without using timers. My board has a clock of 16MHZ. Let's say I want to introduce 5ms delay before I check if a button is pressed. How would I identify how many instructions I need to execute to get 5 ms delay and how would I program it? Is there a standardized way of doing this? It looks like a very standard thing but I am not able to understand how it is done. I am