OpenRX shows exactly what a 10 mm antenna choice costs in range
Four receivers share the same ExpressLRS core, then add an external antenna, dual-band RF and a second radio. A 5.3 km test measures what each compromise buys.
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Tech · page 6
IRZ Tech archive, page 6.
K-Net puts local-loop control where the repairs happen
In northwestern Ontario, K-Net separates local ownership, regional aggregation and long-distance transport. Its durable innovation is less about the advertised speed than who can intervene when a connection fails.
A one-cell Geiger counter with a needle, not a screen
Ludens built a sensitive analog Geiger counter around a J306β tube, one AA cell, a 400 V supply and a moving needle. The interesting part is not nostalgia; it is readability while the probe is moving.
At 13.5 grams, an FPV drone becomes a pile of tradeoffs
This 65 mm FPV whoop weighs between 13.5 and 14 grams with its camera. Scott Stevenson gets there by removing connectors, changing wires and cutting propellers.
When the BIOS becomes SSH output
USBridge-KVM 2.0 promises pre-boot access with video, keyboard emulation, local OCR and an SSH terminal. The useful story is split between what is already verifiable and what still belongs to a hardware campaign.
The drone was not recharged in flight. The real result is what 38.49% leaves out
A new receiver converts 38.49% of green laser light into electricity. That is a strong result, but its denominator begins after several losses a complete system still has to absorb.
This transparent CD player puts the act of playback back in view
Syitren's RM1 puts its disc and mechanism on display. But this CD player is still a campaign: seeing the mechanism is not the same as owning the object.
Desktop 5-axis CNC is getting cheap. The software isn't
Desktop 4- and 5-axis machines are arriving below $10,000. Generating the toolpaths that make them genuinely useful is a very different problem.
This Blender fork would rather ship 534 MB than need the internet
Blender 5.2 keeps a light installer by hosting its new assets online. Bforartists bundles everything into the binary. Two distribution philosophies, and what offline-first really changes for a workshop.
LG's laser draws chip-package connections without making a mask
LG PRI is offering a Laser Direct Imaging tool that exposes package patterns directly on photosensitive substrates. The gain is flexibility; its announced top resolution is still far from transistor lithography.