Rodin Coil Tests and Replications

[IndianaBoys]

I want!

3D Printers By Objet - Alaris30 Desktop 3D Printer

so if we pool our money... LoL - they don't even give the price unless you contact them!

geminitric,

$40,000
Cool short example video:

Things On My Desk: Objet Alaris 30 Desktop 3D Printer demo | Boing Boing Gadgets

IndianaBoys

[rave154]

Gem,

the cheapest 3D printer ive seen was around 4,500 (dollars i think )...desktop model. messing around with sketchup is great fun too ( andi havent finished with that avenue yet either ).

yes i do have an inductance meter ( or at least an inductance function on my MM)

Cloxxi...

il try your ideas as soon as ive eaten, thanks for the ideas

[rave154]

ok, heres the results of testing using 3 DMM's....and one analogue meter..

Cheapo DMM
------------

1) 0.6
2) 0.6
3) 0.6
4) 0.6
5) 0.6
6) 0.6

total in series 1.2

1>2 0.7
1>3 0.9
1>4 1.0
1>5 1.1

PRECISION GOLD WG020
-----------------------

1) 0.4
2) 0.4
3) 0.4
4) 0.4
5) 0.4
6) 0.4

total in series 1.0

1>2 0.5
1>3 0.6
1>4 0.7
1>5 0.9

UNI-T UT50A
------------

1) 0.3
2) 0.3
3)0.4
4) 0.4
5) 0.3
6) 0.4

total in series 0.9

1>2 0.4
1>3 0.6
1>4 0.7
1>5 0.9

ANALOGUE METER all values in Ohms as above
-----------------

1) 10
2) 10
3) 10
4) 10
5) 12
6) 12

total in series 14 !!!!!!!

1>2 14
1>3 14
1>4 14
1>5 14

these measurments using the x10 scale on the meter, in other words...the 10 above, regisered as a 1.0 on the meter.so x10 = 10. i also checked the meter using a known 100 Ohm resistor and it registered 11, so 11 x 10 =110 which is correct.

[rave154]

as another test, i connected up a battery of 12.08V..to a 100Ohm resistor.and the coil.with DMM on amps..

resistor alone... 115.9 mA

R = V / I = 12.08 / 0.1159 = 105.318 Ohms

resistor in series with windings 1>6 in series
114.7 mA

R = V / I = 12.08 / 0.1147 = 104.22 Ohms

therefore resistance of windings 1>6 = 1.1 Ohms

P.S...i found why the analogue readings are so apparently way off....even if i short the terminal leads....it still reads "1"...so.thats why they all came out to be a 10

pretty much the same as measured by the 3 DMM's

[rave154]

ok, i think ive figured it out...

shorting the leads of the UNI-T meter still gives 0.2 Ohms (resistance of the leads? )... so....the resistance of the windings isnt 0.4 but 0.2....so 6 x 0.2 =around 1.2 ohms total.which is what i measured ( allowing for only being able to see a single digit after the decimal point )

[rave154]

How to

Russ from youtube has done a nice "How to" make a randy powell toroid

YouTube - Making and marking a Toroid for Rodin coil research!!! How to

along with tom barnetts how to mark out the toroid..

YouTube - Drawing the Rodin number matrix on a 9 x 9 torus

[Cloxxki]

ok, i think ive figured it out...

shorting the leads of the UNI-T meter still gives 0.2 Ohms (resistance of the leads? )... so....the resistance of the windings isnt 0.4 but 0.2....so 6 x 0.2 =around 1.2 ohms total.which is what i measured ( allowing for only being able to see a single digit after the decimal point )

Phew, we can breathe again. :-) Thanks Rave!

[rave154]

just got my delivery of 6 x 15,000uF, 35V caps and 8 x STP80NF55's ( 55V, 80A continuous, 320 A pulsed N channel power mosfet) all for only £11 + packing...

from surplectronics.com..got lots of good stuff there for VERY good prices ( at least in comparison to the prices i have been paying lol )

disassembled my PIC32-MX 6 port/channel transistor controller..rewiring it to use these power fets..but doiung it properly this time, right values of resistors for load on transistor of opto-couplers for minimum amp draw etc.going good so far considering im almost a complete nincompoop when it comes to electronics

basically, each of the 6 port/channels from the PIC has its own opto which in turn has its own power FET, which in turn will energise one of the 6 pairs of windings on the new rodin....all controllable from software *drools at the prospect*

first test will be to create a rotating field, energising windings 1..then 2.then 3.up to 6...so that it travels around the toroid with pickup coil in the middle etc etc.


the permutations are almost endless....so start thinking up ideas for tests fella's

[rave154]

hi,

finally finished wiring up my 6 port/channel PIC32-MX circuit...checked each channel using a 12V light bulb....all 6 channels works ok..first time without any re-wiring !! ( for me thats almost proof of the existance of God lol )

im going to try and re-draw a picture frawn by Marko i believe...to show exactly what and where the windings are....so things are a but clearer for ya'll. ( btw my drawing skills are even worse than my electronic skills ! lol )

[rave154]

puzzled

hi all
see attatchment

the 4V supply on the left and the 12V supply on the right share a common ground

when i enegise the gate using either 4V or 9V or 12V the bulb lights as it should....but when i disconnect the 4/9/12V from the gate.the bulb stays on and only goes out if i connect the gate pin to ground.

its sort of acting like a "Latch" so to speak..is this normal for a mosfet? ialways thoght the mosfet switched "ON" when the gate was energised.and switched off as soon as the power to the gate was disconnected

the mosfet is a STP80NF55.though i have also tested IRF740 and IRF 540 and they all show the same behaviour..

am i missing something here?

ps i just disconnected the gate pin from the 4/12V and tapped the gate pin with my finger.and sure enough its charging the gate enough to switch the fet.is this normal?

[rave154]

ahh i think i have it..i nee da resistor between the gate and ground dont i?

would this be called a pull-down resistor?

whatever its called i think i can see what the problem is....but feel free to correct me if im wrong about this

[IndianaBoys]

wow indiana..this 3D printing technology is INCREDIBLE !!!! and JUST what i need....a sort of plastic version of CNC...but backwards...instead of chopping material off from a block....you lay down material a bit at a time....this looks perfect !!!! ( cost permitting )

im getting google sketchup.and throwing together a quick toroid...and sending it to one of the 3D places in england for a quote

Rave154,

Update on more affordable 3D printers:

Personal Portable 3D Printer $1,500 US - not sure about this one, they are in Hong Kong and don't give a lot of contact info:

Personal Portable 3D Printer



fully assembled 3D printer for less than £2000
BitsFromBytes


IndianaBoys

[rave154]

Thanks for those links indiana......DAMN cheap !

i finally got my coil wound fully...and also the PIC32-MX 6 channel / 6 mosfet drive circuit all working..

will be posting some results sooooooooon

[rave154]

anybody seen this before>?


wtach at about 22 minutes and onwards.,.

Dailymotion - FreieEnergie-Workshop09 - 08 Kublenz Levitation im Magnetfel - ein Wissenschaft Video

[jimboot]

Hi all. Just wound my first rodin coil. Sheesh that was hard. I hoping to hook up a version of my ossie motor circuit. And use it as a drive coil. Im looking for how the coil would get hooked up normally given Mark talks about 2 different circuits. Im only half way through the vids but if anyone can point me to a schematic of how theyve hooked it up I would greatly appreciate thanks.