Search found 195 matches

by kaleun96
Sat Jul 27, 2019 6:29 am
Forum: Equipment Discussions
Topic: Potential stack and stitch rig
Replies: 20
Views: 3615

May I ask what's an idler in this case? I've seen them for V-Slot rails where it's used with a timing belt but I can't see references to one for a generic linear actuator with a ball screw. Looks like an interesting rig though, a very useful platform to improve upon. Looking forward to seeing how it...
by kaleun96
Fri Jul 26, 2019 10:45 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fruit Fly at 7x
Replies: 3
Views: 1195

Re: Fruit fly

Olympusman wrote:I don't think it is a Drosophila.

Mike
Any ideas? I'm not a Swedish, nor European, native so I'm clueless when it comes to identifying species here!
by kaleun96
Fri Jul 26, 2019 8:25 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fruit Fly at 7x
Replies: 3
Views: 1195

Fruit Fly at 7x

I believe this is a fruit fly, perhaps Drosophila obscura. The magnification range needed for the ideal framing was just out of reach. I'm pretty covered for around 5X and below or 8X and above but this needed something a bit in-between. I ended up using an Olympus 26.2 f3.1 reversed on the Redrock ...
by kaleun96
Tue Jul 23, 2019 12:19 am
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 9886

kaleun96, The TMC5130 internal micro-controller changes the microsteps on the fly based upon what the demand motor speed is. Speeds over 600rpm are capable with the good motor, light load, proper motor parameters and good power supply & decoupling. Check the videos I did on these, recall doing 1000...
by kaleun96
Mon Jul 22, 2019 6:30 am
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 9886

Hello everybody, I have moved the IR from the Pin2 to the A1 and used Pin2 for the DRV_ENN. The first test with 256 micro-steps: https://drive.google.com/open?id=1B5oN9JdDVH1j3z_JXNLNQAS3cORF35Fh BR, ADi Nice! I'm surprised you have it running so fast with 256 microsteps. If you try and stop it fro...
by kaleun96
Sat Jul 20, 2019 3:46 am
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 9886

Hello everybody, Does anybody know if I can use the analog pins 1, 2, 3, 4, 5 as outputs if the analog pin 0 is already used as an input pin for the keypad-shield? https://www.arduino.cc/en/Tutorial/AnalogInputPins A0 = Pin 14 A1 = Pin 15 A2 = Pin 16 A3 = Pin 17 A4 = Pin 18 A5 = Pin 19 BR, ADi Shou...
by kaleun96
Fri Jul 19, 2019 1:28 am
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 9886

Hello Kaleun96, Unfortunately only green marked pins are free :-( The remaining digital pins are used by the keypad-shield. The pin 10 too, so that I have to use pin3 for SS / CSN. BR, ADi Ah, of course! Forgot about the keypad and LCD display haha. Have you thought about using a Mega instead? Most...
by kaleun96
Thu Jul 18, 2019 11:03 am
Forum: Equipment Discussions
Topic: TMC5130A-TA BOB & ARDUINO UNO
Replies: 49
Views: 9886

Hello everybody, Unfortunately UNO doesn’t have enough digital outputs :-( You should have enough digital pins, no? Four (10,11,12,13) for the SPI configuration, 3 for IR diode, relay, and flash, and then many more left over. Unless you haven't shown all components. I'm not sure about that LCD shie...
by kaleun96
Mon Jul 15, 2019 1:41 am
Forum: Equipment Discussions
Topic: V-slot frame for macro rig (COMPLETED).
Replies: 41
Views: 8135

I'm envious of the setup! Compact, portable, clean...what's not to like! You've inspired me to try out V-Slot as well. I love how they have 3D models of everything so you can put it all together in SketchUp or similar to make sure everything lines up. One thing I noticed is the horrible hole spacing...
by kaleun96
Wed Jul 10, 2019 12:59 am
Forum: Equipment Discussions
Topic: V-slot frame for macro rig (COMPLETED).
Replies: 41
Views: 8135

Nice to see it come to life! A shame about the part mix up on the order, did you prefer to tap 48 holes rather than send it back and wait for new parts? I wonder if there would be any value in filling the hollow aluminium with a dampening material like sand. Just thinking of a stepper motor + hollow...
by kaleun96
Mon Jul 08, 2019 1:51 pm
Forum: Equipment Discussions
Topic: V-slot frame for macro rig (COMPLETED).
Replies: 41
Views: 8135

Is that the Redrockmicro 5X Macro, used as a tube lens? If, so how does it perform? Best, Yup that's the one. I haven't done any extensive testing with it but it seems to work well as both a tube lens and in a stacked setup (with another reversed on the front of it). It definitely has a lot of prom...
by kaleun96
Mon Jul 08, 2019 2:03 am
Forum: Equipment Discussions
Topic: V-slot frame for macro rig (COMPLETED).
Replies: 41
Views: 8135

I think this will do the trick .. found some bits of "L" shaped aluminum in the shed (4,5 cm x 2,5 cm). I will cut and drill something like this (green) https://live.staticflickr.com/65535/48212168611_f9195a78ce_b.jpg Screenshot 2019-07-04 at 20.47.05 by antonio caseiro , on Flickr Nice! I think th...
by kaleun96
Thu Jul 04, 2019 2:40 am
Forum: Equipment Discussions
Topic: V-slot frame for macro rig (COMPLETED).
Replies: 41
Views: 8135

Haha yeah it's a tough problem to solve. I will try take a photo of my setup tonight so you can see what I did. I think my setup will add too much height for what you're trying to achieve here but maybe gives you an idea. Playing with those SmallRig parts is a bit like Lego :D You just need to find ...
by kaleun96
Thu Jul 04, 2019 2:15 am
Forum: Equipment Discussions
Topic: Some lens tests at 0.7x with an ancient coin
Replies: 40
Views: 7836

Well it is good, but having over 1000 lenses makes it hard at times to locate one ;-) No wonder I'm always coming across your posts on mflenses.com :lol: The Bogen 4/60 I also have (two diff makers actually, HOYA) and it performs rather well! See here: https://www.flickr.com/photos/kds315/albums/72...
by kaleun96
Thu Jul 04, 2019 1:54 am
Forum: Equipment Discussions
Topic: Some lens tests at 0.7x with an ancient coin
Replies: 40
Views: 7836

I had that 55mm (APO-) Computar but either sold it or dislocated it... Quite nice, came in nice box. Happened to talk to the designer once before he deceased, he sent me a bunch of documents about the Computar lenses; need to dig it out... http://www.macrolenses.de/ml_detail.php?ObjektiveNr=192 Als...