Trouble with connecting pixy to rp2040

Suu · August 2, 2025, 9:38am

Hello!
I am using the example code of pixy library: ccc_hello_world. I hooked up spi pins MOSI, MISO, SS, SCK, GND and 5V. But the code sends: ‘no response’. I am coding in Arduino IDE, what should I do?

edge · August 5, 2025, 2:34am

Hello,
Are you using “SPI with SS”
https://docs.pixycam.com/wiki/doku.php?id=wiki:v2:pixymon_index#interface-tab

You will also need to use Pixy2SPI_SS instead of Pixy2. Also, the open() method for Pixy2SPI_SS takes a single arg, which is the I/O number of the slave select (SS).

github.com

charmedlabs/pixy2/blob/master/src/host/arduino/libraries/Pixy2/Pixy2SPI_SS.h

//
// begin license header
//
// This file is part of Pixy CMUcam5 or "Pixy" for short
//
// All Pixy source code is provided under the terms of the
// GNU General Public License v2 (http://www.gnu.org/licenses/gpl-2.0.html).
// Those wishing to use Pixy source code, software and/or
// technologies under different licensing terms should contact us at
// [email protected]. Such licensing terms are available for
// all portions of the Pixy codebase presented here.
//
// end license header
//
// Arduino SPI with slave select link class

#ifndef _PIXY2SPI_SS_H
#define _PIXY2SPI_SS_H

#include "TPixy2.h"

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Edward