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Treadmill Transformed: Mega 3D Printer Builds a Kayak

2025-06-07
Treadmill Transformed: Mega 3D Printer Builds a Kayak

Five years ago, "belt" 3D printers started gaining traction, using a conveyor belt for seemingly infinite Y-axis printing. However, most remain desktop-sized, limiting X and Z dimensions. Ivan Miranda and Jón Schone took a different approach, repurposing a treadmill into a massive belt 3D printer. They ingeniously adapted the treadmill's structure, designing custom steel uprights, heavy-duty linear rails, large stepper motors, and custom heatsinks. Overcoming numerous challenges, they successfully printed a full-size kayak, launching it at Maker Faire Prague.

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(www.hackster.io)
Hardware belt printer large-scale printing

SignalSDR Pro: A Raspberry Pi-Sized High-Performance Software-Defined Radio

2025-01-02
SignalSDR Pro: A Raspberry Pi-Sized High-Performance Software-Defined Radio

Signalens is launching the SignalSDR Pro, a high-performance software-defined radio (SDR) with a Raspberry Pi-like form factor. Based on the Analog Devices AD9361 transceiver and AMD Zynq 7020 FPGA, it boasts a 70MHz to 6GHz frequency range and features Gigabit Ethernet and USB 3.0 connectivity. A 40-pin GPIO header allows for external hardware integration, and compatibility with other SDR platforms like ADALM-PLUTO and USRP B210 is achieved through simple jumper changes and microSD card swaps. The package includes a metal enclosure for passive cooling, multiple antennas (including GPS), cables, and SIM cards.

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(www.hackster.io)
Hardware Software Defined Radio