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Trinket 5V Error (Still!!!)

by mendeleev_the1st

Hello all,
So I'm trying to upload some code to my Trinket Pro 5v 16 MHz (USB) for the Neopixel strips attached to it, and I get the following error:
Using Port : usb
Using Programmer : stk500v2
avrdude: usbdev_open(): did not find any USB device "usb" (0x03eb:0x2104)

avrdude done. Thank you.

Programmer: AVRISP mkII
Board: Pro Trinket 5V 16 mHz USB

The tutorial on Adafruit says that when I press the reset button on the board, the red light should pulse for 10 seconds, which is when I should upload the code. My board doesn't do that. The light just comes on and goes back off. We've been using a USB cable that is used for uploading data, and this problem has followed us through the lands of Mac, Windows, and beyond. Please help with something besides "go to the Adafruit forums". If I wanted to do that, I would. Thanks!

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Trinket 5V Error

by mendeleev_the1st

Hi guys (and gals)
So last month I started the Guardian Sword project by the venerable Ruiz Men-Children. I have printed some of the parts and soldered all of my components. The problem I have is that when I try to compile the script for the Trinket, I gives me an error! But, Arduino won't give me details on what exactly is wrong, so I just had to look through the code, which didn't help me. Here are some technical details which might help y'all:
Adafruit Trinket 5V (USB connection)
89 Neopixels, one had to be cut off. It's a 60 LED Segment + 30 LED Segment.
Using Arduino 1.8.4
Neopixel Library 1.1.2
Adafruit AVR Boards 1.4.9
The only changes to the code that I made are here below:

define PIN 1

// Color Segments

define APIXELS 14 // number of first orange pixels

define BPIXELS 85 // number of blue pixels

define CPIXELS 89 // second orange pixels

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(89, PIN, NEO_GRB + NEO_KHZ800);

for(int i=85;i<CPIXELS;i++){

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Raspberry Pi

by adafruit

This is all about Pi projects! What awesome projects are you thinking about doing with your Raspberry Pi?

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Part Finishing Survey

by raminik

Hey everyone, I've created a short survey (5 questions max) for an engineering class. All answers are appreciated, ultimately it should help the 3D printing community as a whole. Thanks!

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USB wristband

by Ghris

Yarn (I use up almost 12 meters)
Soft paperboard
A tape measure,
Super glue,
Verbatim TUFF 'N' TINY small flash drive (or something similar, you can purchase at http://www.kynix.com)
A ruler,

Wristband forming
Cut the paper into 3.2 cm wide. The length of it is the same as your wrist circumference. Remember the length should leave more. After the outside is wrapped with yarn and fabric, the middle of the ring will be smaller.
Then folded the paper you cut down in half. And entangle it with tape. But leave the end openings. as shown in the first picture. The side cut open, and at the end of the tape, then tightening around outside. The head will become your U disk hat, so make sure it is enough to not let U disk slide out. Now you peel the flash drive shell off and use super glue to stick cardboard you fold a suitable thickness. At this time you should make the thickness of the flash drive fits the gap of the cardboard tube. Put the flash drive into your cardboard tube to another head and glue it down.

Winding yarn
The color you want to use decides how long is each piece of yarn.
Fix the original yarn head with adhesive plaster. Then at the edge of the wristband paints super glue to prevent yarn slippage. Wind the yarn around wristband as tightly as you can. After a piece of yarn wrapped, as shown in the second picture you tie the string head at the end. You tie up another color of yarn. The new color of yarn bundles gently on the old color of yarn. Then all you can do is to make it tightly. All has been completed, you can use super glue to fix it under the end of the last one color yarn coat.
OK, quickly wear it on!

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