If the heady early days of space exploration taught us anything, it was how much we just didn’t know. Failure after failure mounted, often dramatic and expensive and sometimes deadly. Launch vehicles exploded, satellites failed to deploy, or some widget decided to give up the ghost at a crucial time, blinding a multi-million dollar probe and ending a mission long before any useful science was done. For the United States, with a deadline to meet for manned missions to the moon, every failure in the late 1950s and early 1960s was valuable, though, at least to the extent that it taught them what not to do next time.
For the scientists planning unmanned missions, there was another, later deadline looming that presented a rare opportunity to expand our knowledge of the outer solar system, a strange and as yet unexplored wilderness with the potential to destroy anything humans could build and send there. Before investing billions in missions to take a Grand Tour of the outer planets, they needed more information. They needed to send out some Pioneers.
Continue reading “Hacking When It Counts: The Pioneer Missions”
We have a lot of respect for the hackers at NASA’s Jet Propulsion Laboratory (JPL). When their stuff has a problem, it is often millions of miles away and yet they often find a way to fix it anyway. Case in point is the Curiosity Mars rover. Back in 2016, the probe’s rock drill broke. This is critical because one of the main things the rover does is drill into rock samples, collect the powder and subject it to analysis. JPL announced they had devised a way to successfully drill again.
The drill failed after fifteen uses. It uses two stabilizers to steady itself against the target rock. A failed motor prevents the drill bit from retracting and extending between the stabilizers. Of course, sending a repair tech 60 million miles is not in the budget, so they had to find another way. You can see a video about the way they found, below.
Continue reading “NASA Remotely Hacks Curiosity’s Rock Drill”
No matter which platform you’re into, retrocomputing is usually a labor of love. The obsolete, the unpopular, the downright weird – old computers of every stripe are found, restored to something like their former glory, and given a new lease on life. It’s heartwarming, in a way. But when a computer has obviously been abused, it takes a little extra effort, of a lot in the case of this oil-submerged VIC-20 restoration.
In the two-part video below, [The 8-Bit Guy] goes through the gory details of bringing this classic Commodore back from the grave. The first video shows the cosmetic rebuild, which given the filthy state of the machine was no mean feat. Cracked open, the guts were found to be filled with an oily residue; [The 8-Bit Guy] chalks that up to a past life in some kind of industrial setting, but we see it more as flood damage. Whatever the sad circumstances on the machine’s demise, the case required a workout to clean up, and it came out remarkably fresh looking. The guts needed quite a bit of cleaning too, mainly with brake cleaner to cut through the gunk.
Part two focuses on getting the machine running again, and here [The 8-Bit Guy] had his work cut out as well. With a logic probe, signal injector, and some good old-fashioned chip swapping, he was able to eliminate most of the potential problems before settling in on some RAM chips as culprits for the video problems he saw at power-up. It all worked out in the end, and the machine looks and acts like new. We’re impressed.
Maybe we shouldn’t question [The 8-Bit Guy]’s call on the VIC-20 being from an industrial setting, though. After all, the “little Amiga that could” ran a school’s HVAC system for over 30 years.
Continue reading “Bringing A VIC-20 Back From An Oily Grave”