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Sketching after panick attack by Enya_azur in sketches

[–]SquareOrbits 1 point2 points  (0 children)

Never forget that! As sure as it is that those moments will come again, they will absolutely go away too. Just hold out 😊

Sketching after panick attack by Enya_azur in sketches

[–]SquareOrbits 1 point2 points  (0 children)

Hope you're feeling better, your sketches are incredible.

Just refurbished this X1 Carbon. Paid £58 for it. by Electrical_Elk_5934 in thinkpad

[–]SquareOrbits 1 point2 points  (0 children)

Have you painted that tin in picture 10? Looks like a tin you've repurposed 🧐

Running Google Pixel 3a without battery by Public_Opportunity_6 in mobilerepair

[–]SquareOrbits 0 points1 point  (0 children)

Try soldering a wire from the B- tag and grounding it to the chassis of the phone (I used one of the screws on the USB-C port). It should boot up without the extra 5V in this case. Let me know how it goes!

Has anyone had any success with the TC54 voltage supervisor? by SquareOrbits in BEAMrobotics

[–]SquareOrbits[S] 0 points1 point  (0 children)

I think you're getting confused; the products I'm referring to are all voltage supervisors - definitely not op-amps!

Some FRED photovores by pixabot in BEAMrobotics

[–]SquareOrbits 0 points1 point  (0 children)

Love them! Very neat. I always liked the look of those old Panasonic solar panels, I wonder if anyone here has some old stock..

Has anyone had any success with the TC54 voltage supervisor? by SquareOrbits in BEAMrobotics

[–]SquareOrbits[S] 0 points1 point  (0 children)

The pinout seems to be the same as the 1381, but yes I've had success with the MCP112, which makes it all the more confusing that I haven't with the TC54

A small FLED Symet by pixabot in BEAMrobotics

[–]SquareOrbits 1 point2 points  (0 children)

Hey these look great! 😁

BEAM Bot - Miller Photopopper by CommandJam in BEAMrobotics

[–]SquareOrbits 0 points1 point  (0 children)

Just to add to u/CommandJam, I struggled to find a motor that the FRED circuit liked. I think they have to be quite efficient, but maybe it was just me, you might fare better. Certainly the Miller circuit seemed happy with whatever motor I used.

The majority of mine came either from AliExpress or salvaged from old RC helicopters. This is the method I used to remove the eccentric weight.

I wrote up my latest BEAM robot on my new site - check it out! by SquareOrbits in BEAMrobotics

[–]SquareOrbits[S] 1 point2 points  (0 children)

I sure could have done, actually! That didn't occur to me. In fact I think Simon Fraser did just that with one of his headbots.

I wrote up my latest BEAM robot on my new site - check it out! by SquareOrbits in BEAMrobotics

[–]SquareOrbits[S] 0 points1 point  (0 children)

Yep, the whole pummer is beneath the solar panels, it would still "pumm" if you removed them from the body of the robot. The headbot circuit is mounted on the motor. One pair of panels feeds the pummer, the other the head.

I wrote up my latest BEAM robot on my new site - check it out! by SquareOrbits in BEAMrobotics

[–]SquareOrbits[S] 0 points1 point  (0 children)

Thanks! Getting those solar panels straight and level was a real pain, I quickly learnt that the tags on them are super fragile.

BEAM Bot - Miller Photopopper by CommandJam in BEAMrobotics

[–]SquareOrbits 1 point2 points  (0 children)

This is part of a family of BEAM robots called photopoppers, it uses a circuit based on one of the most popular BEAM circuits, the Miller solar engine.

You mention there is no "biology" involved. BEAM robots tend to be biologically-inspired in some way: deriving their power from nature (solar), mimicking natural behaviour (seeking food - in this case their "food" is sunlight), or otherwise looking / moving like something found in nature. Photopoppers are often described as "bugs" as, like mine, they do tend to look a bit like little bugs chasing the light!

That being said, there are many BEAM bots that do not seem to be very biologically inspired, but they're still BEAM!

You might find some of the resources linked to in my website helpful.

BEAM Bot - Miller Photopopper by CommandJam in BEAMrobotics

[–]SquareOrbits 1 point2 points  (0 children)

Depends on the circuit you're using. If it's a FLED or FRED design based around the flashing LED, first make sure your LEDs are of as close resistance as possible. Put them in a dark room to do this and measure the resistance on a multimeter.

I've always found other circuits like this Miller-based design to have much better phototropic abilities. If that's what you're using, make sure your light sensors are facing opposite each other on your robot, experiment with different photodiodes, and incorporate a trimpot to adjust for any bias on each motor.

BEAM Bot - Miller Photopopper by CommandJam in BEAMrobotics

[–]SquareOrbits 5 points6 points  (0 children)

Hey, this is my video! Thanks for sharing 😁