DIY Robotic Tester - BoraTronic

[BZOFIQ]

Found it, thanks!!!

 

[BZOFIQ]

Great work!

You've got a follower.

 

[Borat]

I had re-worked the syringe actuator from scratch: made it simpler, more accurate and smaller...

Tomorrow I will run the standard test program - to see that everythig is working a designed..

 

[Borat]

The next thing I will be working on is the rotating reagent rack.. I ordered some ball bearings that should arrive tomorrow, let's see what I can make of it...

 

[Sean Clark]

Great work.

 

[Borat]

Bought this small 10mm OD ball bearing.. Trying to figure out how to best build a rotating reagent rack..

Measurements with digital caliper shows 10.00mm diameter of the ball bearing. Super-precise!

 

[Borat]

Just waiting for a 9.5mm drill bit to start assembly of the rotating reagent rack. Bought a second ball bearing as I need 2 of those...

Finally bought the drill stand - and made a clamp for it (I 2 drill tools - this one is mains operated):

 

[Borat]

Making some progress with rotating reagent rack...

 

[Sean Clark]

Are you going to index the carousel with a stepper motor, some kind of ratchet mechanism, or both?

 

[Borat]

Are you going to index the carousel with a stepper motor, some kind of ratchet mechanism, or both?

i dont yet know, i bought some continous servo motors that i am yet to try. as for positioning the motor - i bought a spare colour sensor. i am planning to glue some coloured paper under reagent rack and see if i can use the sensor to sense the position of corousel..

 

[Sean Clark]

i dont yet know, i bought some continous servo motors that i am yet to try. as for positioning the motor - i bought a spare colour sensor. i am planning to glue some coloured paper under reagent rack and see if i can use the sensor to sense the position of corousel..

I like the color sensor idea. That would alow for some self error checking/verification too. I am looking forward to what you come up with.

 

[Borat]

 

[Borat]

 

[ConnivingPigeon]

Hello Dr/Mad Scientest Borat! I've been following along very closely. I was wondering what you were planning for the reaction chamber? I assume that a regular cuvee would have the difficulty to be able to fully drain/flush it. Will you instead make something custom with a drain on the bottom?

 

[Borat]

Hello Dr/Mad Scientest Borat! I've been following along very closely. I was wondering what you were planning for the reaction chamber? I assume that a regular cuvee would have the difficulty to be able to fully drain/flush it. Will you instead make something custom with a drain on the bottom?

I haven't yet decided - but its not the first time I am facing this problem. The cuvee needs to have flat bottom because there will be a stirrer undernearh it and the stirrer bar only works with flat bottom.

The solution I found to work for my Alk monitor is something like this:




Any suggestions are welcome!

 

[Borat]

The motor holder (still TBD) will flexibly attach to the arch - and it should be possible to center the motor position..

 

[Bluedore]

Been following along! Amazing job and looking forward to the finished product!

 

[ConnivingPigeon]

I haven't yet decided - but its not the first time I am facing this problem. The cuvee needs to have flat bottom because there will be a stirrer undernearh it and the stirrer bar only works with flat bottom.

I had an idea: maybe the whole thing is mounted on a bearing + servo that can be tipped over. My girlfriend had a better idea to do something like this where there's a stopper on the bottom that can be raised to drain it. That way you don't have to worry about the "dead space" in the drain line where it might not be as thoroughly mixed

 

[Borat]

I wasn't satisfied with the precision achieved by having an arylic hole housing ball bearings - so I did an aluminium insert, which is a lot more precise and durable.



I attached servo motor gear using gorilla silicone.. I can make it stronger - but for now I would rather keep it firmly glued - in case I need to change it or adjust to location of the attached gear..

 

[Borat]

The rotating reagent rack is completed - now need to test this servo motor, never used servo motors before!