DIY Robotic Tester - BoraTronic

[Borat]

Jashemash!

This is Borat again - showing off superior Kazakh skills. Support this post with your likes - I will appreciate the attention.

On a path to more complex devices, I have already built these:

DIY light bar
https://www.ultimatereef.net/thread...ng-temperature-control-active-cooling.890640/
DIY Calcium Reactor
https://www.ultimatereef.net/thread...-diy-peristaltic-pump-diy-alk-monitor.892067/
DIY Alkalinity Monitor
https://www.ultimatereef.net/thread...kalinity-monitor-diy-magnetic-stirrer.896310/
DIY Peristaltic Pump
https://www.reef2reef.com/threads/d...ings-of-glorious-nation-of-kazakistan.856269/
DIY Kalk Reactor
https://www.reef2reef.com/threads/diy-pressurised-kalk-reactor-stirrer.863158/
Now is the time to build a robotic tester similar to MasterTronic...

Follow this thread - it will be very interesting!

 

[Borat]

So I am currently in the process of sourcing the parts for this build. The footprint of this device will be the same as MasterTronic (slightly smaller) - I will explain some of the peculiarities of MasterTronic build later in this thread.

 

[Borat]

4X peristaltic pump heads - ordered from China

 

[Borat]

a set of brown vials - ordered by china as having septa screw caps, but these arrived with normal caps.. holes will need to be drilled

 

[Borat]

Nema 17 motors (I have a few more as spares from prior projects)

 

[Borat]

Servo motors - these will be used to move reagent rack

 

[Borat]

5mm actuator slider rods - these will be used to drive syringe

 

[Borat]

Some CNC bits and blobs

8mm lead screws
5mm rigid flunge coupling
Idler puller mount plate
flexible shaft couping (5mm motor to 8mm lead screw)

2020 V-slot pulley

2020 V-slot aluminium profile




T-nuts for 2020 V-slot profile


6mm GT2 timing belt


GT2 drive pulley and toothed idler pulley


Short M4 waffle thin head screws


Nema 17 mount plate (to try) and timing belt clamp


Optical switch

Pack of 10 aluminium alloy connectors:

 

[Borat]

Meanwell 12v 5A constant voltage driver



12v->5V PCB mount voltage regulator

 

[Borat]

Linear Bearing LM5UU 5mm Bushing: to build syringe actuator

 

[Borat]

Arduino Mega 2560 Pro mini chip

 

[Borat]

ESP32 Dev chip (for wi-fi connectivity)

 

[Borat]

RTC DS3231 (clock)



Adafruit logic level converter (for communication between arduino mega and EPS32)

 

[Borat]

Nema 11 motor (only 1x for now)

 

[Borat]

TMC2209 stepper motor drivers (I will need 7 of these) - only one box of 5 is shown

 

[Biff0rz]

I think you could save a bit of pain by 3d printing a lot of parts. How will you calibrate against the different reagents? How will you store results?

 

[Borat]

Some syringes:

I bought a wrong set of syringes - as I knew nothing about them. Firstly, the needle needs to be at least 80mm. MasterTronic erroneously (probably by design fault) uses 60mm needes and for that reason it's unable to draw the majority of reagent from vials as the vials themselves are 60mm tall (it can draw a maximum of 12ml out of 20ml available, i.e. only 60% of reagent!).

Secondly - there are different ways in which the needle is connected to the syringe: one is called Luer Slip and another is called Luer Lock.

Luer Slip is what you encounter most - by just pushing the needle into syringe until it's firmly in it. Luer Lock is where the needle screws into syringe.

Disclaimer: I don't have a MasterTronic - but I inferred it from reading the MasterTronic manual and studying the technicalities of syringes.

So after getting wrong type of needles (too short), I re-ordered 100x of 80mm needles but these came with with Luer Lock connector. I then had to order new 20x syringes with Luer Lock Connector. Waiting for delivery...

 

[thatmanMIKEson]

I love the parts list...your like a super genius in the stuff im interested in!

Hey could you make short videos of some assembly or soldering or something when your getting hands on. I'd love to see a little of your genius @ work!

And when your ready to start selling some of these will there be a r2r discount? I hope so!

Nice trinkets gypsy

 

[Borat]

I think you could save a bit of pain by 3d printing a lot of parts. How will you calibrate against the different reagents? How will you store results?

I am 100% fluent with acrylic, gluing complex parts and machining it to desired shape - if you visit my other builds you can see it for yourself.

My 11yo son has a 3D printer and he prints an occasional part for me - I use those very infrequently as they are never as good as acrylic parts.

 

[Borat]

The vials I bought (from China) are most likely exacly the same as in MasterTronic: