Homemade DIY Robot Actuator V2
Brandon Lai wants to build a humanoid robot. He started with the upper body and quickly realized that off-the-shelf actuators would either cost too much or limit what the machine could do. So he set out to design and build his own. This latest version marks his second serious attempt, and it already produces usable torque in testing. He focused on a shoulder actuator sized for a roughly four-kilogram arm about half a meter long. The targets were straightforward. Peak torque needed to reach around 20 newton-meters. Output speed should fall between 40 and 60 revolutions per minute. The unit also had to run continuously for more than an hour. Keeping the cost near $150 per actuator would make it practical for other builders to copy or adapt.

Apple Watch Ultra 4 Rumors Leak
Apple has held its Ultra watch line to a consistent formula since the first model launched in 2022. The titanium case, large display, and focus on serious outdoor and fitness use carried through with only small refinements in the Ultra 3. Supply chain reports shared by DigiTimes describe a major redesign of the exterior along with a significant upgrade to the sensing system. The changes target the case proportions that have stayed nearly identical across three generations. Multiple accounts point to a noticeably slimmer titanium body, with some estimates around 15 percent thinner while keeping the familiar 49mm footprint.

Spider-Man Brand New Day Trailer June
Years after the events of Spider-Man: No Way Home, the latest trailer shows Tom Holland’s Peter Parker still living in the shadow of that memory-erasing spell. No one knows who he is anymore, not even his closest friends. The footage leans into that isolation while cranking up the personal stakes and physical chaos for the July 31 release.

Webb Hubble Terzan 5 Bulge Fossil Fragment
Astronomers have long studied dense collections of stars known as globular clusters scattered throughout the Milky Way. Most appear to have formed in one quick burst early on and then evolved quietly for billions of years. One object in the galaxy’s crowded central bulge always stood out a bit, though. New data has now shown why. Observations collected by the James Webb Space Telescope, working alongside archival records from the Hubble Space Telescope, have established that Terzan 5 contains not one but four distinct generations of stars. This discovery turns the object from a standard cluster into something researchers now call a bulge fossil fragment.