Author Archives: alex

RasPiO Breadboard Pi arrival tweets

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Digispark sketch for RasPiO InsPiRing

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Use the Arduino IDE with the Adafruit DotStar library
Data Pin 1
Clock Pin 0

// Simple strand test for Adafruit Dot Star RGB LED strip.
// This is a basic diagnostic tool, NOT a graphics demo...helps confirm
// correct wiring and tests each pixel's ability to display red, green
// and blue and to forward data down the line.  By limiting the number
// and color of LEDs, it's reasonably safe to power a couple meters off
// the Arduino's 5V pin.  DON'T try that with other code!

#include <Adafruit_DotStar.h>
// Because conditional #includes don't work w/Arduino sketches...
//#include <SPI.h>         // COMMENT OUT THIS LINE FOR GEMMA OR TRINKET
#include <avr/power.h> // ENABLE THIS LINE FOR GEMMA OR TRINKET

#define NUMPIXELS 24 // Number of LEDs in strip

// Here's how to control the LEDs from any two pins:
#define DATAPIN   1 //4
#define CLOCKPIN  0 //3
Adafruit_DotStar strip = Adafruit_DotStar(
  NUMPIXELS, DATAPIN, CLOCKPIN, DOTSTAR_BGR);
// The last parameter is optional -- this is the color data order of the
// DotStar strip, which has changed over time in different production runs.
// Your code just uses R,G,B colors, the library then reassigns as needed.
// Default is DOTSTAR_BRG, so change this if you have an earlier strip.

// Hardware SPI is a little faster, but must be wired to specific pins
// (Arduino Uno = pin 11 for data, 13 for clock, other boards are different).
//Adafruit_DotStar strip = Adafruit_DotStar(NUMPIXELS, DOTSTAR_BRG);

int delayval = 30;  // delay for 1 ms

void setup() {

#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000L)
  clock_prescale_set(clock_div_1); // Enable 16 MHz on Trinket
#endif

  strip.begin(); // Initialize pins for output
  strip.show();  // Turn all LEDs off ASAP
}

void loop() {   

    for(int i=NUMPIXELS; i>-1; i--){
      strip.setPixelColor(i, strip.Color(255, 0, 0)); // pixels.Color takes RGB values in GRB format,  0,0,0  to 255,255,255
      strip.show();
      delay(delayval);
    }

    for(int i=0; i<NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(0, 255, 0)); 
      strip.show();
      delay(delayval);
    }

    for(int i=NUMPIXELS; i>-1; i--){
      strip.setPixelColor(i, strip.Color(0, 0, 255)); 
      strip.show();
      delay(delayval);
    }

    for(int i=0; i<NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(255, 0, 125)); 
      strip.show();
      delay(delayval);
    }

    for(int i=NUMPIXELS; i>-1; i--){
      strip.setPixelColor(i, strip.Color(0, 255, 125)); 
      strip.show();
      delay(delayval);
    }

    for(int i=0; i<NUMPIXELS; i++){
      strip.setPixelColor(i, strip.Color(255, 100, 0)); 
      strip.show();
      delay(delayval);
    }

    for(int i=NUMPIXELS; i>-1; i--){
      strip.setPixelColor(i, strip.Color(255, 125, 125)); 
      strip.show();
      delay(delayval);
    }
}

RasPiO Night Light arrival tweets

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RasPiO FullpHAT arrival tweets

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Nice to see some FullpHATs arriving in the wild…

Here’s a little packing video I made when I was trying to see how fast I could pack. Managed 5 in just over a minute…

Wemos Demo Sketch for RasPiO InsPiRing

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This works on Wemos D1 mini

#define FASTLED_ESP8266_D1_PIN_ORDER  // this lets you use Wemos pin numbering
#include<FastLED.h>                   // this brings in FastLED
#define NUM_LEDS 24                   // set LED number
#define DATA_PIN 7
#define CLOCK_PIN 5

CRGBArray<NUM_LEDS> leds;

    void setup() { 
        FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR, DATA_RATE_MHZ(12)>(leds, NUM_LEDS);
    }

void loop() {
      FastLED.clear();
      // Turn the first led red for 1 second
      //leds[0] = CRGB::Red; 
      //leds[1] = CRGB::Green;
      //leds[2] = CRGB::Blue; 
      //FastLED.show();
      //delay(1000);

      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 255, 0, 0);
      }
      FastLED.show();
      delay(1000);
      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 0, 255, 0);
      }
      FastLED.show();
      delay(1000);
      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 0, 0, 255);
      }
      FastLED.show();
      delay(1000);
}
// end

Arduino nano demo sketch for RasPiO InsPiRing

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This works on Arduino nano

#include<FastLED.h>
#define NUM_LEDS 24
#define DATA_PIN 7
#define CLOCK_PIN 5

CRGBArray<NUM_LEDS> leds;

    void setup() { 
        FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR, DATA_RATE_MHZ(12)>(leds, NUM_LEDS);
    }

void loop() {
      FastLED.clear();
      // Turn the first led red for 1 second
      //leds[0] = CRGB::Red; 
      //leds[1] = CRGB::Green;
      //leds[2] = CRGB::Blue; 
      //FastLED.show();
      //delay(1000);

      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 255, 0, 0);
          delay(30);
          FastLED.show();
      }
      //FastLED.show();
      delay(1000);
      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 0, 255, 0);
      }
      FastLED.show();
      delay(1000);
      for(int i=0; i<NUM_LEDS; i++){
          leds[i].setRGB( 0, 0, 255);
      }
      FastLED.show();
      delay(1000);
}

RasPiO InsPiRing Arrival Tweets

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I love seeing ‘arrival tweets’ when people get their KickStarter rewards…

Portsplus Picademy – new version.

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NEW – Portsplus Picademy = Port Numbers and Alternative Functions

It was found that Picademy attendees quite often put the Portsplus on the wrong way up. So I decided to do a special Picademy edition as well as the regular Portsplus. It also has rather fancy gold-plated lettering for RasPiO and Picademy. It should appeal to hardware hackers as well because it has the alternative functions on the reverse side. More info and purchase here

Portplus Picademy edition Raspberry Pi Port Identification board

Portplus Picademy edition Raspberry Pi Port Identification board