Why Not Ask ChatGTP?
Q: You're a dinosaur. Why bother to 'Ask Aaron' if you can just ask an AI chatbot like ChatGPT? Do us all a favor: shuffle off to the old age home and get out of the way of progress.
A: Yes, I did ask and am now answering my own existential question. AI chatbots are getting a lot of press coverage with speculation that they may replace a lot of human authorship. Maybe it's time to let a chatbot take over my duties here at Ask Aaron?
Here's a recent simple question to Ask Aaron with my response:
Q: I just switched to full brushless and for the first time find myself running a setup where none of the speed controllers have a built in bec. How do I wire in an external bec? Thanks for the help. [Social Media]
A: [Mark J.] Wire the BEC in between the battery power buss and the receiver -- just like the ESCs. You may plug it into any available port on the receiver.
My response is brief, but between the diagram and the knowledge that the question comes from an experienced combat robot builder I think it was sufficient.
Let's give ChatGTP an audition: I fed the same question - adding the context that it was about an R/C robot - into ChatGPT and received the following answer:
If your new brushless motors do not have a built-in BEC (Battery Elimination Circuit) and your speed controllers also lack BECs, you will need to add an external BEC to power your receiver and servos.
Here are the steps to wire in an external BEC:
Well, the general advice given is not awful, but the described circuitry won't work.
Maybe if there was a diagram to accompany the text it would be possible to make some sense of it? I re-submitted the question to ChatGPT and added "Draw a diagram":
Sure, I can help you with that!
To wire in an external BEC (Battery Eliminator Circuit), you will need to connect it between the battery and the receiver. Here's a diagram to help you visualize the wiring:
In this diagram, the BEC is represented by a rectangle labeled "BEC." The positive and negative leads from the battery should be connected to the input terminals of the BEC, which are usually labeled "BAT" or "IN." The output terminals of the BEC, which are usually labeled "OUT," should be connected to the receiver's power input terminals. Be sure to observe polarity when making these connections: the positive lead from the battery should be connected to the positive input terminal of the BEC, and the positive output terminal of the BEC should be connected to the positive power input terminal of the receiver. Likewise, the negative leads should be connected to the negative terminals.
Once you have made these connections, the BEC should provide a steady, regulated voltage to the receiver and other electronics in your R/C robot. This will ensure that they operate correctly, even as the battery voltage drops during use.
OK, the diagram is useless but the text has the BEC correctly wired to the battery and receiver. If you can figure out which receiver pins are positive and negative there is a chance you could get this to work.
I decided to try a different approach and handed the question back to ChatGPT with a request to "Reply in HTML code" so that I might just drop the answer into the webpage:
To wire in an external BEC, you will need to follow these steps:
So close... so very close.
2. Cut the
...but it also screwed up the HTML code with tiny
It looks like I'm still needed around here.
Copyright 2023 by Mark Joerger -- all rights reserved.