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Open Hardware/Modding: Raspberry Pi, Arduino, and GNU/Linux
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Raspberry Pi ☛ Electronic drum business cards built on RP2040
Want to drum your name into someone’s memory at a networking event? Then Sergey Antonovich has got you covered. The embedded systems engineer has reinvented the age-old business card by turning it into a playable electronic drum kit — and we’d hazard a guess that this one won’t end up languishing, forgotten, in someone’s pocket.
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Quentin Santos ☛ Fixing the RP2350-USB-A not working as USB host
tl;dr: you need to desolder R13, the resistor closest the pin 6 of the board, as indicated by the red arrow in the cover picture of this article
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Robotic Systems LLC ☛ moteus hardware CAN ID filtering
Recent improvements to the mjcanfd-usb-1x and the pi3hat were stepping stones to improved reliability for long daisy chains of moteus controllers. Another step in that process is the feature I’ll describe here, hardware CAN ID filtering in the moteus firmware. Let’s talk about how things used to work, what the problems were and how this new feature helps.
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Jeff Geerling ☛ How to silence the fan on a CM5 after shutdown
Out of the box, if you buy a Raspberry Pi Compute Module 5, install it on the official CM5 IO Board, and install a fan on it (e.g. my current favorite, the EDAtec CM5 Active Cooler), you'll notice the fan ramps up to 100% speed after you shut down the Pi.
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Arduino ☛ A tabletop bowling lane machine you can 3D print at home
It is easy to see why: this is a marvel of engineering. It does everything you’d see at a real bowling alley, just in miniature. It picks up and resets pins, it returns balls, it keeps score, and it even has optional bumpers for beginners. Aside from electronic components and some off-the-shelf materials, such as the wood lane and the fasteners, the entire six-foot-long machine is 3D-printable.
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Linux Gizmos ☛ LILYGO Expands T-Beam Series With New 1W LoRa GPS Board
The system is built around the ESP32-S3FN8, a dual-core Tensilica LX7 processor with 16 MB of flash and 8 MB of PSRAM. It supports Wi-Fi 2.4 GHz and Bluetooth LE and can be programmed using Arduino or PlatformIO as other LILYGO products.
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Linux Gizmos ☛ OnLogic Refreshes Its CL Series With the New CL260 Edge Gateway
The system uses either the Intel N150 or Intel N250 processor, both part of Intel’s latest low-power N-Series lineup. It integrates 8 GB of LPDDR5 memory operating at 4800 MT/s and provides an M.2 2280 M-Key slot for SATA or NVMe storage.