Currently, I am working on a group project for school, which involves the NeoKey 1x4. Currently, we seem to be having some troubles with the I2C on the device as it is throwing errors with the example file (I have tried addresses 0x30-0x3F). Currently, we are thinking that the I2C chip might be defective. Here's why:
Here is how it is set up: C is connected to SCL
D is connected to SDA
Vin is connected to 5V (have also tried 3.3V)
- is connected to Ground.
Here is the code I am currently attempting to run (the example file):
Code: Select all
#include "Adafruit_NeoKey_1x4.h"
#include "seesaw_neopixel.h"
Adafruit_NeoKey_1x4 neokey;
void setup() {
Serial.begin(115200);
while (! Serial) delay(10);
if (! neokey.begin(0x30)) {
Serial.println("Could not start NeoKey, check wiring?");
while(1) delay(10);
}
Serial.println("NeoKey started!");
for (uint16_t i=0; i<neokey.pixels.numPixels(); i++) {
neokey.pixels.setPixelColor(i, Wheel(map(i, 0, neokey.pixels.numPixels(), 0, 255)));
neokey.pixels.show();
delay(50);
}
for (uint16_t i=0; i<neokey.pixels.numPixels(); i++) {
neokey.pixels.setPixelColor(i, 0x000000);
neokey.pixels.show();
delay(50);
}
}
uint8_t j=0; // this variable tracks the colors of the LEDs cycle.
void loop() {
uint8_t buttons = neokey.read();
for (int i=0; i< neokey.pixels.numPixels(); i++) {
neokey.pixels.setPixelColor(i, Wheel(((i * 256 / neokey.pixels.numPixels()) + j) & 255));
}
if (buttons & (1<<0)) {
Serial.println("Button A");
} else {
neokey.pixels.setPixelColor(0, 0);
}
if (buttons & (1<<1)) {
Serial.println("Button B");
} else {
neokey.pixels.setPixelColor(1, 0);
}
if (buttons & (1<<2)) {
Serial.println("Button C");
} else {
neokey.pixels.setPixelColor(2, 0);
}
if (buttons & (1<<3)) {
Serial.println("Button D");
} else {
neokey.pixels.setPixelColor(3, 0);
}
neokey.pixels.show();
delay(10); // don't print too fast
j++; // make colors cycle
}
/******************************************/
// Input a value 0 to 255 to get a color value.
// The colors are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
if(WheelPos < 85) {
return seesaw_NeoPixel::Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if(WheelPos < 170) {
WheelPos -= 85;
return seesaw_NeoPixel::Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return seesaw_NeoPixel::Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
return 0;
}
Code: Select all
// --------------------------------------
// i2c_scanner
//
// Version 1
// This program (or code that looks like it)
// can be found in many places.
// For example on the Arduino.cc forum.
// The original author is not know.
// Version 2, Juni 2012, Using Arduino 1.0.1
// Adapted to be as simple as possible by Arduino.cc user Krodal
// Version 3, Feb 26 2013
// V3 by louarnold
// Version 4, March 3, 2013, Using Arduino 1.0.3
// by Arduino.cc user Krodal.
// Changes by louarnold removed.
// Scanning addresses changed from 0...127 to 1...119,
// according to the i2c scanner by Nick Gammon
// https://www.gammon.com.au/forum/?id=10896
// Version 5, March 28, 2013
// As version 4, but address scans now to 127.
// A sensor seems to use address 120.
// Version 6, November 27, 2015.
// Added waiting for the Leonardo serial communication.
//
//
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
//
#include <Wire.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address<16)
Serial.print("0");
Serial.print(address,HEX);
Serial.println(" !");
nDevices++;
}
else if (error==4)
{
Serial.print("Unknown error at address 0x");
if (address<16)
Serial.print("0");
Serial.println(address,HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");
delay(500); // wait 5 seconds for next scan
}
My group has also told me that they have attempted to find the I2C via an oscilloscope as well, but were not met with success on that end.
If anyone is able to let me know if it is faulty and will need a replacement, or if I am doing something wrong that would be very helpful!
Also to support- I have the order number with me, I just didn't want to put it within the thread.