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


Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

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.

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!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

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


Maker Business — Making sure the CHIPS act isn’t just crumbs

Wearables — Don’t sweat it

Electronics — Potentiometer conventions

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 8.1.0.RC0 is out, LEGO Minecraft Blocks with Python & more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — AI Teddybear, Designing Accessible IoT Products, and more!

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! — New Products 5/24/23 Feat. Adafruit Mini I2C Gamepad with seesaw – STEMMA QT / Qwiic!

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.