Questions tagged [arduino-mega]
A microcontroller board based on the ATmega2560 or 1280 chip. Use this tag for questions specifically regarding the Mega, and not just general Arduino usage.
111 questions
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How do you use SPI on an Arduino?
With reference to the Arduino Uno, Mega2560, Leonardo and similar boards:
How does SPI work?
How fast is SPI?
How do I connect between a master and a slave?
How do I make an SPI slave?
Please note: ...
- 38.9k
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How do I split an incoming string?
I am sending a list of servo positions via the serial connection to the arduino in the following format
1:90&2:80&3:180
Which would be parsed as:
servoId : Position & servoId : Position &...
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How can I get a unique ID for all my Arduino boards?
Once you have uploaded a sketch to one of your Arduino boards, it is hard to know exactly what source code led to that sketch.
Indeed, you may change the source code of your sketch on your PC without ...
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How to interconnect multiple Arduinos with a Rpi to control home-lights/switches
While planning the lightning infrastructure (wall-switches and lights) of my new home (it's still under-construction) I choosed to go through the "automated route" way and due to my background (I'm an ...
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Arduino Mega timeout communication with programmer error
I have an Arduino Mega 2560 and it was working fine until about lunch time when I started getting this error:
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout ...
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29
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8
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Are global variables evil in Arduino?
I'm relatively new at programming and many of the coding best practices I'm reading effectively state that there are very few good reasons to use a global variable (or that the best code has no ...
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Is ATMEGA328P the same as 16U2?
I've been playing with my Arduino for a few months.
But, I just bought a shield that says it needs to be used with ATMEGA328P. My box says I have a 328P, however, reading the chip, it's inscribed ...
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ArduinoISP external programmer produces verification error?
I am using an ArduinoISP external programmer to upload a sketch to an Arduino MEGA.
I set the processor type to MEGA 2560, and use Ctrl-Shft-U to upload using a programmer. My programmer is set to ...
- 225
0
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1
answer
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Can I control a cellphone's lcd (+touch screen)?
I had an Xperia txt pro just laying around and tried to revive it. I burned it like an idiot using 5v in the battery pins by accident :/
So I decided to read it apart and got to the lcd, can I use my ...
2
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2
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Detect movement on moving robot? PIR Sensor
I am working on a human following robot project and I am trying to achieve this with 1 Ultrasonic sensor that makes sure the robot won't crash into something and 3 PIR sensors that will detect human ...
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How to use Multiple MPU9250 to Arduino Lilypad [duplicate]
Is it possible to connect more than one or to be specific 5 MPU9250 into 1 Arduino lilypad? How will I set the addresses, and where should I put the pins for SDA and SCL? I hope someone out there ...
- 123
0
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1
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How to interpret analog values sent to Arduino from line scanner?
So I have a line scan camera attached to my Arduino Mega and I'm trying to send it a digital clock impulse and get an analog output back. The line scan camera is supposed to return 128 pixels.
So far ...
0
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1
answer
10k
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Store TinyGPS++ latitude value into a variable of type string or float
I want to get the GPS ordinates in degrees with 6 decimal accuracy. I can obtain this by creating a gps object with TinyGPS library. but In the TinyGPS example codes, its written
Serial.println(gps....
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2.4" TFT LCD Shield isn't working on Arduino Mega
Even on ebay's website it is mentioned that I can't use 2.4" TFT LCD Shield display on attach to Arduino Mega. The problem is that I bought this shield by mistake. I want to put this shield onto ...
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Can I make delayMicroseconds more accurate?
I'm trying to bit bang DMX data and that requires 4us pulses. Not having much luck with the results I'm checking to see how good the Arduino is at delaying... Seems to be pretty terrible at it.
Here'...
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