Friday, May 18, 2018

Subscribe to the Adafruit Youtube channel! #Youtube #AdafruitLearnSystem

from Subscribe to the Adafruit Youtube channel! #Youtube #AdafruitLearnSystem
by Jessie Mae

Are you subscribed to the Adafruit Youtube channel? If you’re not already subscribed, click here! http://adafru.it/subscribe . It’s a free and easy way to keep up with our newest episodes. Here’s some of what we’re up to.

Electronics show and tell with G+ On-Air hangouts every Wednesday at 7:30pm ET. Want to show a project on an upcoming show and tell? Leave a comment on the show and tell announcement on Adafruit’s G+ page: https://ift.tt/15IF4UZ

Every Wednesday night at 8pm ET join us for our weekly live video & chatroom! Visit http://adafruit.com/ask for more info. You can ask anything about electronics, kits at Adafruit or just stop in to meet other makers who are building cool things! At the end of the chat we give away a kit from Adafruit to the winner of our trivia question!

Hang out with Noe & Pedro Ruiz every week and discover 3D printing! Get your 3D news, projects, design tutorials, shop talk and more each week..

New Products – Updated Fridays

Each week Ladyada shows the newest great electronics at Adafruit!

Join Ladyada streaming live for circuit board layout design, code writing, surface mount soldering and more fresh engineering and even some gaming! If Ladyada’s working on it, you’ll find it here first.

where Collin Cunningham covers a seemingly random variety of topics from the world of electronics, science, music, etc, etc …

Project builds, hacks, and mods from John Park’s Workshop!

NEW PRODUCT – Adafruit NeoPXL8 FeatherWing for Feather M0 – 8 x DMA NeoPixels!

from NEW PRODUCT – Adafruit NeoPXL8 FeatherWing for Feather M0 – 8 x DMA NeoPixels!
by Angelica

NEW PRODUCT – Adafruit NeoPXL8 FeatherWing for Feather M0 – 8 x DMA NeoPixels!


Since we first started carrying NeoPixels back in 2012, the chainable RGB LEDs have taken over the world. And a big part of that success is due to the simplicity of their wiring – just one data wire, no matter how many pixels you’ve got. So no surprise they’re everywhere, blinking away in art exhibits, maker faire demos, DJ booths, decorations and costumes.

But, at some point, every NeoPixel’er bumps into the constraints of that single-data-wire: the timing is very picky and often time your code has to stop completely so that it can burst out the data without any interruptions. This requirement makes it tough to create fast-update lighting effects, and limits the number of pixels you can drive before other hardware peripherals get attention.

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Resident pixel-pro Paint Your Dragon (who coined the name NeoPixel dont-cha-know!) took on this challenge and has succeeded gloriously. By carefully examining the ATSAMD21 datasheet he noticed you could use the Timer 0 in ‘waveform’ mode, and create 8 unique waveforms over DMA that would handle all the pixel-pushing for you.

Thus is born the NeoPXL8 Arduino library and NeoPXL8 FeatherWing! The library runs on our Feather M0’s (the Basic ProtoAdaloggerBluefruitExpressand others) and handles all the NeoPixeling for you, up to 8 strands of concurrent DMA output each one can be 250 pixels long for a total of 8 x 250 = 2000 pixels. That leaves you some RAM for your code to run in as well – the theoretical max is 340 pixels per strand but you’d be using all the RAM on the M0 chip.

To make connection easy, this Featherwing does the level-shifting and pin arrangements for you. All 8 strands have a level shifter that converts the 3.3V logic level to 5V logic, there’s a little switch-cap converter that generates the clean 5V power supply for you. Then a 100 ohm resistor in line after the buffer reduces ringing on long wiring runs.

You get two options for connecting NeoPixels:

  • 2 x 8 Header with ground and 5V-logic signal, in pairs
  • 2 x RJ-45 ‘Ethernet’ Jacks, with ground and 5V-logic signal per twisted pair. This matches the same wiring as the OctWS2811

To keep the ‘Wing compact we let you choose which wiring you’d like to go with, just solder in the connectors you prefer. Then you’ll also need to provide power to the NeoPixels. Since you’ll need many Amps of current, we don’t manage that through the Wing – the PCB copper would be too limiting. We recommend using terminal blocks or bus bars to connect all the ground/5V power wires together and powering them from their own chunky 5V supply.

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Since we are using TCC0 (Timer 0), we are limited in what pins can be used for NeoPixel output. Here are the options you have:

  • Output #0 comes from A3
  • Output #1 comes from A4
  • Output #2 comes from either Digital #10 or the Serial TX pin (selectable)
  • Output #3 comes from either Digital #12 or the Serial RX pin (selectable)
  • Output #4 comes from either SPI MOSI or I2C SDA (selectable)
  • Output #5 comes from either Digital #5 or the SPI SCK pin (selectable)
  • Output #6 comes from either Digital #11 or the SPI MISO pin (selectable)
  • Output #7 comes from Digital #13

As you can see, some of these pins are fixed (A3, A4, #13) and the rest have two options. If you absolutely cannot spare both options, you can disable that from the NeoPXL8 DMA output and live with 7 strands only.

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While we designed this specifically for use with Feather M0 (SAMD21 based), you could use it with other Feathers, for the level shifting capabilities. You’ll just have to figure out what NeoPixel driver firmware you can use and what pins are available.

If that all sounds groovy to you, pick up one of these wings and check out the NeoPXL8 Arduino library examples to get your massive LED project going!

In stock and shipping now!

New Products 5/16/2018 Featuring Adafruit CRICKIT for Circuit Playground Express! (Video)

from New Products 5/16/2018 Featuring Adafruit CRICKIT for Circuit Playground Express! (Video)
by Angelica

New Products 5/16/2018 Featuring Adafruit CRICKIT for Circuit Playground Express! (Video)


Thursday, May 17, 2018

NEW PRODUCTS – TT Motors – 1:90 Gear Ratio – Bi-Metal + All-Metal Gearboxes

from NEW PRODUCTS – TT Motors – 1:90 Gear Ratio – Bi-Metal + All-Metal Gearboxes
by Angelica

Composite 3801 3802

NEW PRODUCTS – TT Motors – 1:90 Gear Ratio – Bi-Metal + All-Metal Gearboxes


These durable (but affordable!) gearbox motors (also known as ‘TT’ motors) are an easy, low-cost way to get your projects moving. These are TT DC Gearbox Motors with a gear ratio of 1:90, about double of the ‘standard’ 1:48 ratio. That gives them higher torque but slower rotational speed. Since they’re slower they’re good for robots where strength is more important than speed. We stock them in Bi-Metal and All-Metal Gearboxes.

They look a lot like our yellow all-plastic-gearbox motors but these have the output-half of the motor gears machined from steel, so they won’t strip as easily, and they’re twice as slow (and twice as powerful) given their lower gearbox ratio. The metal gears also mean they’re a louder when running.

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You can power these motors with 3VDC up to 6VDC, they’ll of course go a little faster at the higher voltages. We grabbed one motor and found these stats when running it from a bench-top supply

  • At 3VDC we measured 80mA @ 60 RPM no-load, and 0.5 Amps when stalled
  • At 4.5VDC we measured 90mA @ 90 RPM no-load, and 0.8 Amps when stalled
  • At 6VDC we measured 100mA @ 120 RPM no-load, and 1.0 Amps when stalled

Note that these are very basic motors, and have no built-in encoders, speed control or positional feedback. Voltage goes in, rotation goes out! There will be variation from motor to motor, so a separate feedback system is required if you need precision movement.

Comes 1 x per order, with just the motor. These motors do not come with wires attached, so you’ll need to solder wires on yourself.

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You cannot drive these directly from a microcontroller, a high-current motor driver is required! We recommend our DRV8833 motor driver for these motors, as it works well down to 3V and can be set up with current limiting since the stall current on these can get high. The TB6612 can also be used, it’s on our shields and wings, but you’ll need to supply at least 4.5V – which is what you’ll likely want to run these motors at anyhow!

We have a range of wheels, add-ons and accessories for these motors so you can bling out your bot just the way you like.

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In stock and shipping now!

Bird Temple #3DPrinting #3DThursday

from Bird Temple #3DPrinting #3DThursday
by Jessie Mae


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JobSmolders shared this projectr on Thingiverse!

This is a bird feeder for small birds. Bigger birds simply can not get in 🙂 .You can put food for them in the green feeder-dish in the middle. The feeder has a hole in the middle to let water out. Also the feeder can be removed for cleaning. In use, that will be necessary 🙂

The peaces fit together like a puzzle and they are glued. Later I painted it with insulating primer to get rid of the “printer tool marks” you can see on the pictures.

I have no reason for the colors of PLA I have chosen other than that I had those. The 2 different colors are due the fact I used 2 printers to save time. I printed this in 0,2mm resolution with a 0,4mm nozzle. The temporary support peaces are printed with only one wall count and one top and bottom layer. Infill of these support peaces are 10%. This is to save material :-). The other peaces are printed with 3 layers for the wall , top and bottom . Infill between 20-25%. The roof peaces are printed with support generated by Cura.

The mount or ring at the top is fastened with a M3x40mm bolt and nut. At first I designed this “mount” in 3 peaces, but later changed it to 2 peaces, due to other changes I made. To make this part strong enough I used PET-G Carbon to print this peace. This material looks very nice, but it turns a brass nozzle into garbage after a few prints :-). For this a hardened steel nozzle is better, but such a nozzle is expensive ( €30,- where I live)

in the “total assembly.STL’ the whole model is assembled so you can check where all the parts should go

If you have questions or do you think I have forgotten something , feel free to ask 🙂

See more!


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Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

Diy Motorized camera slider #3DThursday #3DPrinting

from Diy Motorized camera slider #3DThursday #3DPrinting
by Ben

7ae2a868ca047afbeadb755e2fa089fd preview featured

Shared by madaeon on Thingiverse:

Do you need a motorized camera slider to create incredible dolly shots for your videos, but you are on a low budget?

We will show you how to make a low cost one by yourself!

For instructions about how to assemble it look at our Instructable:
https://www.instructables.com/id/DIY-Motorized-Camera-Slider

Download the files and learn more


649-1
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!

Boldport Touchy Stand #3DPRinting #3DThursday

from Boldport Touchy Stand #3DPRinting #3DThursday
by Jessie Mae

D058568588c02116a3b9eb280ef7e3d0 preview featured 1

MByD shared this project on thingiverse!

A stand for the Boldport touchy project

See more!


649-1
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!