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Author Archives: engineerzero
My Twitter Experience
I got up to 300 followers and was hoping to have over a thousand by the end of the year. But that’s not to be. Anyhow, I’ll try to focus more on blogging now.
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Chat-GPT is stumped by a logic puzzle
>There are three guys. They will answer questions true or false. One guy will always tell the truth. Another guy will always lie. The third guy will randomly tell the truth or lie. You are allowed to ask three questions … Continue reading
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Controlling a Robot Arm over the Internet
This is the setup that I used to control a robot arm over the internet. Starting on the right, there is the robot arm, an OWI-535 kit which I assembled last August. Moving to the left, there is interface circuitry … Continue reading
DC Motor Control: L9110 motor control chip with OWI-535 robot arm
The L9110 motor control chip doesn’t really do much controlling. It lets you operate the motor to spin in one of two directions. Of course, there are times when this is important. In the case of a robot motor arm … Continue reading
DC Motor Control: H-Bridge and L293D chip
My OWI-535 robotic arm (link) has DC motors, which are controlled by mechanical switches. Here’s what the schematic looks like for each motor in the robotic arm: Since there are five motors, there are five switches like this. This type … Continue reading
OWI-535 Robotic Arm Edge Assembly Tips
The OWI robotic arm has over 1100 reviews on Amazon already, so I won’t review it here. Instead, I wanted to share some tips that I learned while assembling the robot. It took me five hours — but maybe with … Continue reading
Nooli Dots
I wrote a memory match game app. It’s free with no ads or in-app purchases on Google Play. Here’s the link: Nooli Dots
Timesense, a science fiction novella
Free July 7-8 on Amazon Kindle: For millennia the starship voyaged from Sirius to Sol. It seemed as dead as any sterile asteroid drifting between the light years. Nothing moved within the frames of its unlit portals. Aside from the … Continue reading
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The Ten Million Ton Space Elevator
Carbon nanotubes are often assumed to be the sole viable material for the construction of an Earth-based space elevator. However, carbon nanotubes in the lengths required for construction of a space elevator remain a laboratory curiosity. Is there an alternative … Continue reading
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Tagged space colonization, space elevator, ten million ton, zylon
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Graph of IQ vs. US Household Income Percentiles
Here’s a graph that I made of IQ vs. US Household Income percentiles. In other words, I looked up the percentiles for IQ and cross-referenced them with the percentiles for US Household Income. Of course, financial status is a function … Continue reading
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Engineer Zero 