Feather ULN2003 Stepper Wing #Feather @hackadayio @LexKravitz

Lex Kravitz has designed a ULN2003-based stepper driver board in the Feather board format:

I have several projects that use stepper motors and wanted a simple Feather wing. While Adafruit already makes a Feather motor driver, I designed my own because I wanted to have some buttons and LEDs, as well as a TRRS input port. Costs ~$4 in parts, plus the PCB.

This Feather Wing was made to be hand assembled with through-hole components, which I find easier to put together in small runs.  In the future I may make a version with SMD components as well for professional manufacture.  I made this to control 5V 28BYJ-48 steppers that are easily available for ~$2-3 each.  Often they come with a ULN2003 driver board, if you are thrifty you can grab the chip off the board and move it to this board saving ~50 cents per board.

This board contains:

1) Two 3-pin headers (GND, PWR, and SIG).  These can be used to control a servo or additional sensor.

2) A 3.5mm TRRS port for external control

3) Two LEDs tied to digital pins

4) The ULN2003 motor driver

5) Two small buttons for user control

See the video below, more info on Hackaday.io and kravitzlab.com


As 2022 starts, let’s take some time to share our goals for CircuitPython in 2022. Just like past years (full summary 2019, 2020, and 2021), we’d like everyone in the CircuitPython community to contribute by posting their thoughts to some public place on the Internet. Here are a few ways to post: a video on YouTub, a post on the CircuitPython forum, a blog post on your site, a series of Tweets, a Gist on GitHub. We want to hear from you. When you post, please add #CircuitPython2022 and email circuitpython2022@adafruit.com to let us know about your post so we can blog it up here.

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 32,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — Pololu’s account of the chip shortage

Wearables — Monster-inspired costuming!

Electronics — How to make your own magnetic field probe!

Python for Microcontrollers — Python on Microcontrollers Newsletter: New Releases of MicroPython and CircuitPython and more! #Python #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — 2021 in Recap!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week 1/18/22 KB2040 Kee Boar @adafruit @johnedgarpark #adafruit #newproductpick

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.