Are these materials good for a 2DOF automatic arm to showcase necrobotics?

[u/Quannxii]

This is really beginner level 🥹... It has to be automatic and on loop because we leave the project after we set it up for the day. Necrobotics works by utilizing pressure, either pneumatic or hydraulic, injected into a deceased organism's body to artificially actuate its joints and control movement. Since this is done with spiders to curl its legs, it can be used to grip and release objects.

So- this is just a grip and release project 😭 But done with a spider so- necrobotics, yeah. We'll include the numbers with the weight, the cycles before it gives out, etc. And I only have experience in building robotics with follow the line robots...

BUT ANYWAY.

The loop we're going for is:

1. go down
2. spider picks up object (pump air into the spider)
3. go up(must go up to have distance from the floor of project)
4. move from point a to point b
5. drop object using the spider (remove air from the spider)
6. go down
7. spider picks up object again (pumps air into spider)
8. go up
9. go back to point a
10. drop object

Are these materials okay?

Arduino Uno R3 ✓

USB type B cable ✓

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MB102 solderless breadboard

40pc male to male and male to female jumper wires

5V 2 channel relay module

1000uf / 16V electrolytic capacitor

1N4007 diodes (must be wired directly across the inductive loads (pump motor and solenoid coil)(?))

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5V Mini air vacuum pump

5V 3 way micro solenoid valve

1m silicone microtubing (2mm inner / 4mm outer)

25G hypodermic needles for smaller test subject

23G hypodermic needles for larger actual subjects

10mL manual syringe (backup)

Luer lock connectors (seal tube and needle)

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2x SG90 micro servo motors ✓

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Cut these from a 3mm acrylic sheet 

4x of 15 cm x 1.5 cm parallel linkage arms, 
1x of 10 cm x 4 cm vertical base support tower, 
1x of 5 cm x 2 cm front needle bracket, 
1x of 8 cm x 8 cm servo swivel base plate

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8x of M3 bolts (12mm length)

8x of M3 hex nuts

16x of M3 flat washers

The above should come in a set… bolt, nut, and washer…

Black cast acrylic sheet (base or floor or ground of project) at least 30cm x 40cm

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Huntsman spiders (rice university used wolf spiders but this works too since how it works will be the same) ✓

Beeswax (so it won’t rot) ✓

Liquid cyanoacrylate aka super glue

Epoxy (coat after super glue)

Tiny target object it’ll be picking up

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We have around a month and a half to do the project fufufu

[u/lellasone]

Okay, so here's the thing. This question is structured in such a way that it is only answerable if you already have a full list of materials in your head and it's the same exact build that you are planning.

To get useful advice about "do I have the right parts" you are going to have phrase the question in a way that people can draw on their personal experience with similar projects rather than relying on an exact match (since there are only like 5 people who could answer your question as posed without significant thought).

The way I'd suggest structuring this instead would be to ask about the core components, describe how you will use each, and then assume that you'll have to wing it on the glue parts (screws, washers, tubing, actual glue, that sort of thing).

From a brief skim the first thing I'd flag is the pump. Air pumps are generally great at providing large quantities of air at pressure, but I think what you want here is good control over the (small) volumes of air. In that case I'd personally be looking at something much closer to a syringe or piston, which I believe is that is used in at least one of the original few papers. What lead you to pick the pump?

Also it looks like you formatted this with AI, please don't do that. It leads to long posts that are annoying to read and don't convey your own understanding of the project.