When the Pi Zero came out, one of the downsides (!) of the low-cost design was swapping the ‘standard’ USB A-port for a micro-B port. Now you have to use an ‘OTG’ cable instead of just plugging in a device.
There was also the matter of, if you didn’t have anything connected to USB, and powered up the Pi, you’d get a strange warning
WARN::dwc_otg_handle_mode_mismatch_intr:68: Mode Mismatch Interrupt: currently in Device mode
Basically, the Pi sorta-trying to become a usb device rather than a usb host
Some awesome people on github sorted out that if you used the DWC2 USB driver, and patched a few files, you could get the Pi to act like a USB device (in linux-land this is called the USB Gadgetsystem)
This tutorial is basically just a writeup of how you can follow along and turn your Pi zero into a Usb Serial device or Ethernet device. That’s two whole ways of being able to connect to your Pi zero just by plugging in a micro B cable!
You don’t even need to power your Pi seperately, as power is provided from your computer.
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 firstname.lastname@example.org 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.
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!
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! — NEW PRODUCT – Hot Air Helper Rework Station Plate with Two Ring Clamps
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