Arduino SPI Serial Peripheral Interface Master & Slave Demo Tutorial

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My sketch ran out of memory, requiring a slave arduino to do the FFT/FHT analysis. Thank you for showing how to make the necessary SPI communication between them possible!

CosmickGold

Thank you for the instructions @Roger, Could you please prod me in the right direction with an issue I am having? I have two Arduino UNO boards, and both have motor driver shields attached to them. Each motor driver shield is driving 4 DC motors (4 5v dc motors on one and 4 12v DC motors on the other side) motors.
What I need is for the 8 motors to be driven (speed variation is not needed) in sequence. This involves one Arduino telling the other when to run which motor. I currently have the communication between the two Arduino boards going strong using simple i2c (using RX and TX pins and ground). Do you think you could tell me how I can control one arduino's motor shield through the second Arduino?

siddharthshanbhogue

Hey.. Do you have a video explaining these codes?? I'm a little new to SPI

eccentricOrange

Hey what other software are you using for the serial monitor of the slave? I uploaded the code to both arduinos (Arduino MEGA 3560 and Arduino MEGA ADK) and it doesn't communicate well with the slave
Thank you

marshal

the code is not working and i have checked everything. could it be that this was wrote like 2 years ago and the new spi library works differently ?

NeoBit

if i want to connect arduino and LTC6811-2 with the help of spi communication.How can i do that....?...Can you give the code for arduino too?

sakshamdutta

Hello, I have a small problem, I have a one arduino a wifi shield and arduino datalogger.
When I put on the Arduino WiFi shield + datalogger shield, the shield
wifi is no longer recognized .... both use the SPI protocol, but do not
know to implement this: / someone could give help :)Thank you

dinishugo

Check out my latest Arduino video on YouTube:

RetroRogersLab

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