![]() You can get a less capable Red Pitaya model for about $100 less than the going price. It was, however, able to hear the world easily. Using the box as a WSPR beacon, it was heard fairly well given the low output power. The device shows a browser menu with various options and the result is quite impressive. One has a number of applications that run on the device and will also run on a Red Pitaya. The board boots off an SD card and there are several to choose from. Connectivity: Ethernet and USB connectivity (WiFi with a dongle).CPU: Zynq SoC with a dual-core ARM Cortex A9.The device is pretty powerful compared to a cheap software defined radio: Sure, you can pick up an RTL-SDR dongle for a fraction of the price, but then you miss out on transmitting. While this unit isn’t inexpensive, it also isn’t as expensive as some of its competitors. obliges with a review of the Red device in the video below. If you’ve noticed the TRX-DUO software-defined radio transceiver, you might have wondered how it stacks up to other choices like Red Pitaya or HackRF. You never know.Ĭontinue reading “Hackaday Links: October 9, 2022” → Posted in Hackaday Columns, Hackaday links, Slider Tagged 2022 Superconference, airtags, atm, cia, de-extinction, dodo, drone, hackaday links, HackerTrain, heist, helicopter, Ingenuity, Lufthansa, Martian, wooly mammoth Or, you know, it’s getting to be close to Halloween, a time when the landscape gets magically festooned with toilet paper overnight. We’re going to go out on a limb and say it’s probably something we brought there, likely a scrap of plastic waste lost during the descent and landing phase of the mission. NASA hasn’t said more about what the debris isn’t - aliens - than what it is, which of course is hard to say at this point. The copter eventually shed the debris, which wafted down to the Martian surface with no further incident, and without any apparent damage to the aircraft. The foreign object was spotted on the helicopter’s down-pointing navigation camera, and looks for all the world like a streamer of toilet paper flopping around in the rotor wash. With microcontrollers and LEDs becoming so cheap and ubiquitous, making realistic flames with them is becoming accessible, as we’ve seen with previous projects on electronic candles.Ĭontinue reading “A Cold Light To Warm Your Heart” → Posted in ATtiny Hacks, LED Hacks Tagged attiny85, ghost, LED flame, open source hardware, Open Source Hardware Certification, tea light, through hole, ws2812ĭon’t you just hate it when you walk out of the bathroom with toilet paper stuck to your shoe? That’s a little bit like what happened when the Mars helicopter Ingenuity picked up a strange bit of debris on one of its landing pads. The ATtiny85 itself has 8 KB of flash memory so maybe it’s possible to push ’s code to even more restrictive Atmel devices in the ATtiny family. The pseudo-random number uses a Galois linear feedback shift register and comes in at 86 bytes of flash, with the IR receiver implementation code being the largest using 234 bytes of flash. The ATtiny85 have limited program flash and packs in a lot of functionality in such a small package, squeezing in a bit-banging NeoPixel driver in only 18 bytes of flash that can push out a transfer rate 762 kpbs to update the LEDs. ![]() There is a light sensor that allows the unit to dim when it detects ambient light and the whole unit is powered off of a micro-USB connection. The device has an infrared (IR) receiver to be able to control it from a remote that speaks the NEC protocol. ![]() The NeoCandle uses an ATtiny85 chip to power four WS2812 NeoPixel jelly bean LEDs. has modified a 3D printed ghost along with extending ’s light simulation code to create a cute light that’s perfect for the holiday season. Halloween is coming fast and what better way to add to your Halloween ornamentation than ’s cute NeoCandle tea light simulator. ![]() Posted in Raspberry Pi Tagged e-paper, ebooks, epaper, epub, ereader, Inkplate, mechanical keyboard If you want to see some other open e-reader projects we’ve covered, check out the EPub-Inkplate or the Open Book Project. Refresh time is reportedly slow, although suspects this might be due more to the limited power of the Raspberry Pi Zero 2 more than the display itself. The 3.7″ screen displays pages after running an EPUB through ebooklib and Beautiful Soup to generate files that can be used by the Waveshare drivers. is hoping to use these LEDs to implement a front lighting system in a future revision of the hardware. longed for these halcyon days before touchscreen e-readers and improved on the concept by adding mechanical keyswitches.īy using an Adafruit NeoKey 1×4 as the keyboard interface, the e-reader has four hot-swappable keyboard sockets with built-in LEDs. In the early days of e-readers, most devices had physical buttons to turn pages and otherwise navigate the device. ![]()
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