POV On The Flipper Zero

May 23, 2025 by Lewin Day 6 Comments

The Flipper Zero can do all kinds of neat stuff, like helping you cut keys or decode various radio transmissions. However, until now, it hasn’t been particularly adept at persistence of vision tasks. The LightMessenger was designed for that very purpose, and [Derek] recently wrote up a deep-dive into the interesting gadget.

The LightMessenger is a hardware add-on module developed by LAB401 in collaboration with [TIX LE GEEK] for the Flipper Zero. In persistence-of-vision mode, you can plug it in via the GPIO header and display messages in the air by shaking it around. Even better, you can do so in color, with a height resolution of 16 pixels—meaning you can display some nice text or basic graphics. You can key in different text or select and edit bitmaps using the utility on the Flipper screen itself. There’s even a simple flashlight mode, because why not?

In the second part of [Derek]’s write-up, he also goes into detail on the development and manufacturing process for the device.

Files are on GitHub for the curious. We’ve gone over the basics of POV projects before, too.

Continue reading “POV On The Flipper Zero” →

A UV Meter For The Flipper Zero

May 19, 2025 by Matt Varian 6 Comments

We all know UV radiation for its contributions to getting sunburned after a long day outside, but were you aware there are several types different types of UV rays at play? [Michael] has come up with a Flipper Zero add on board and app to measure these three types of radiation, and explained some of the nuances he learned about measuring UV along the way.

At the heart of this project is an AS7331 sensor, it can measure the UV-A, UV-B, and UV-C radiation values that the Flipper Zero reads via I2C. While first using this chip he realized to read these values is more complex than just querying the right register, and by the end of this project he’d written his own AS7331 library to help retrieve these values. There was also a some experimenting with different GUI designs for the app, the Flipper Zero screen is only 128x64px and he had a lot of data to display. One feature we really enjoyed was the addition of the wiring guide to the app, if you install this Flipper Zero app and have just the AS7331 sensor on hand you’ll know how to hook it up. However if you want he also has provided the design files for a PCB that just plugs into the top of the Flipper Zero.

Head over to his site to check out all the details of this Flipper Zero project, and to learn more about the different types of UV radiation. Also be sure to let us know about any of your Flipper Zero projects.

Physical Key Copying Starts With A Flipper Zero

March 25, 2025 by Dan Maloney 26 Comments

A moment’s inattention is all it takes to gather the information needed to make a physical copy of a key. It’s not necessarily an easy process, though, so if pen testing is your game, something like this Flipper Zero key copying toolchain can make the process quicker and easier when the opportunity presents itself.

Of course, we’re not advocating for any illegal here; this is just another tool for your lock-sports bag of tricks. And yes, there are plenty of other ways to accomplish this, but using a Flipper Zero to attack a strictly mechanical lock is kind of neat. The toolchain posted by [No-Lock216] starts with an app called KeyCopier, which draws a virtual key blank on the Flipper Zero screen.

The app allows you to move the baseline for each pin to the proper depth, quickly recording the bitting for the key. Later, the bitting can be entered into an online app called keygen which, along with information on the brand of lock and its warding, can produce an STL file suitable for downloading and printing.

Again, there are a ton of ways to make a copy of a key if you have physical access to it, and the comments of the original Reddit post were filled with suggestions amusingly missing the entire point of this. Yes, you can get a key cut at any hardware store for a buck or two that will obviously last a lot longer than a 3D printed copy. But if you only have a few seconds to gather the data from the key, an app like KeyCopier could be really convenient. Personally, we’d find a smartphone app handier, but if you’ve got a Flipper, why not leverage it?

Thanks to [JohnU] for the tip.

Screenshot of the REPL running on the Flipper, importing the flipper API library and calling infrared receive function out of it with help of autocomplete

A MicroPython Interpreter For Flipper Zero

March 3, 2025 by Arya Voronova 13 Comments

Got a Flipper Zero? Ever wanted to use a high-level but powerful scripting language on it? Thanks to [Oliver] we now have a MicroPython application for the Flipper, complete with a library for hardware and software feature support. Load it up, start it up, connect over USB, and you’ve got the ever-so-convenient REPL at your disposal. Or, upload a Python script to your Flipper and run them directly from Flipper’s UI at your convenience!

In the API docs, we’re seeing support for every single primitive you could want – GPIO (including the headers at the top, of course), a healthy library for LCD and LCD backlight control, button handling, SD card support, speaker library for producing tones, ADC and PWM, vibromotor, logging, and even infrared transmit/receive support. Hopefully, we get support for Flipper’s wireless capabilities at some point, too!

Check out the code examples, get the latest release from the Flipper app portal or GitHub, load it up, and play! Mp-flipper has existed for the better half of a year now, so it’s a pretty mature application, and it adds quite a bit to Flipper’s use cases in our world of hardware hacking. Want to develop an app for the Flipper in Python or otherwise? Check out this small-screen UI design toolkit or this editor we’ve featured recently!

Forget Flipper, How About Capybara?

October 20, 2024 by Jenny List 26 Comments

One of the hacker toys to own over the last year has been the Flipper Zero, a universal wireless hacking tool which even caused a misplaced moral panic about car theft in Canada. A Flipper is cool as heck of course but not the cheapest of devices. Fortunately there’s now an alternative in the form of the CapibaraZero. It’s a poor-hacker’s Flipper Zero which you can assemble yourself from a heap of inexpensive modules.

At the center is an ESP32-S3 board, which brings with it that chip’s wireless and Bluetooth capabilities. To that is added an ST7789 TFT display, a PN532 NFC reader, an SX1276 LoRa and multi-mode RF module, and an IR module. The firmware can be found through GitHub. Since the repo is nearly two years old and still in active development, we’re hopeful CapibaraZero will gain features and stability.

If you’re interested in our coverage of the Canadian Flipper panic you can read it here, and meanwhile if you’re using one of those NFC modules, consider tuning it.

Flipper Zero Panic Spreads To Oz: Cars Unaffected

April 1, 2024 by Jenny List 15 Comments

A feature of coming to adulthood for any young person in the last quarter of the twentieth century would have been the yearly warnings about the danger of adulterated Halloween treats. Stories were breathlessly repeated of apples with razor blades in them, or of chocolate bars laced with rat poison, and though such tales often carried examples of kids who’d died horrible deaths in other far-away places, the whole panic was (as far as we know) a baseless urban legend.

It’s difficult not to be reminded of those times today then, as we read news from Australia warning about the threat from the Flipper Zero wireless hacking tool. It has the same ingredients, of an imaginary threat earnestly repeated by law enforcement officers, and lapped up by a credulous media with little appetite for verifying what they print.

This is a story which first appeared in mid-February in Canada, when a government minister singled out the Flipper Zero as a car theft tool and promised to ban it. This prompted a storm of derision from tech-savvy Canadians and others who immediately pointed out that vehicle security has long ago eclipsed the capabilities of the Flipper, and that there are far more pertinent threats such as those from CAN bus attacks or even RF boosters. Despite this debunking, it seems to have spread. Where will Flipper Mania pop up next?

Canada and Australia are both countries with a free press; that press should be doing their job on these stories by fact-checking and asking pertinent questions when the facts don’t fit the story. When it comes to technology stories it seems not doing this has become the norm.

Thanks [Peter Caldwell] for the tip.

Hackaday Links: March 31, 2024

March 31, 2024 by Dan Maloney 5 Comments

Battlelines are being drawn in Canada over the lowly Flipper Zero, a device seen by some as an existential threat to motor vehicle owners across the Great White North. The story started a month or so ago, when someone in the government floated the idea of banning devices that could be “used to steal vehicles by copying the wireless signals for remote keyless entry.” The Flipper Zero was singled out as an example of such a nefarious device, even though relatively few vehicles on the road today can be boosted using the simple replay attack that a Flipper is capable of, and the ones that are vulnerable to this attack aren’t all that desirable — apologies to the 1993 Camry, of course. With that threat hanging in the air, the folks over at Flipper Devices started a Change.org petition to educate people about the misperceptions surrounding the Flipper Zero’s capabilities, and to urge the Canadian government to reconsider their position on devices intended to explore the RF spectrum. That last bit is important, since transmit-capable SDR devices like the HackRF could fall afoul of a broad interpretation of the proposed ban; heck, even a receive-only SDR dongle might be construed as a restricted device. We’re generally not much for petitions, but this case might represent an exception. “First they came for the Flipper Zero, but I did nothing because I don’t have a Flipper Zero…”

Continue reading “Hackaday Links: March 31, 2024” →