Search found 131 matches

by Andy Davies
Fri Jul 03, 2020 5:06 pm
Forum: Equipment Discussions
Topic: Trinamic parameter tuning
Replies: 5
Views: 277

Re: Trinamic parameter tuning

Can the Stallguard value be found by starting low so that the motor stalls and then increasing the vale until it moves? I think I've found that the behaviour is different depending on whether you are going clockwise or anticlockwise!
by Andy Davies
Fri Jul 03, 2020 8:20 am
Forum: Equipment Discussions
Topic: Trinamic parameter tuning
Replies: 5
Views: 277

Trinamic parameter tuning

I have 6 Trinamic TOS-100 boards with TMC260 motor chips driving a 6 axis system with an Arduino Mega that has different size stepper motors handling different loads. I want to tune the following parameters for each one: 1. Stall Guard railStepper.setStallGuardThreshold(threshold, filter) 2. railSte...
by Andy Davies
Thu May 14, 2020 11:37 am
Forum: Equipment Discussions
Topic: Latest recommendation for single die LED for microscope
Replies: 9
Views: 858

I have found that anything bigger than a single die doesn't add any more light on a Zeiss microscope (Ultraphot and Univeral 16) and already fills the field.
by Andy Davies
Wed May 13, 2020 6:02 am
Forum: Equipment Discussions
Topic: Latest recommendation for single die LED for microscope
Replies: 9
Views: 858

Yes, single die Charles. I've used a variety of CREE LEDs and just wondered if anyone had discovered and tested any of the latest ones.
by Andy Davies
Tue May 12, 2020 3:13 pm
Forum: Equipment Discussions
Topic: Latest recommendation for single die LED for microscope
Replies: 9
Views: 858

Yes, high CRI doesn't mean a colour spectrum that matches daylight.

What are you using?
by Andy Davies
Tue May 12, 2020 9:41 am
Forum: Equipment Discussions
Topic: Latest recommendation for single die LED for microscope
Replies: 9
Views: 858

Latest recommendation for single die LED for microscope

Any ideas for latest recommendation for single die LED for microscope?

High power, good CRI, colour temp 4000-5500K and as even a spectrum as possible.
by Andy Davies
Wed Mar 04, 2020 3:37 am
Forum: Equipment Exchange
Topic: Wanted: Zeiss darkfield epi head
Replies: 5
Views: 2079

I have an Epi head so am just looking for the D insert.
by Andy Davies
Tue Mar 03, 2020 8:28 am
Forum: Equipment Discussions
Topic: Helicon - export full res file
Replies: 6
Views: 705

Helicon - export full res file

I'm trying out Helicon 7.6.1 and uploaded a number of RAW NEF files. I was expecting to be able to pre-process the RAWS in Adobe Camera Raw before doing a render but this wasn't an option. I then exported a DNG but this was much smaller than than my original 7360 x 4912. The only option I can see to...
by Andy Davies
Tue Feb 25, 2020 10:13 am
Forum: Equipment Discussions
Topic: Nikon D810 control and image transfer
Replies: 8
Views: 731

Looks like a need a utility that will move a defined number of images into a series of sub-folders. Any suggestions?
by Andy Davies
Tue Feb 25, 2020 10:07 am
Forum: Equipment Discussions
Topic: Nikon D810 control and image transfer
Replies: 8
Views: 731

Many thanks Rik!! Turning off Live View in qDSLR dashboard now allows my Mega to fire the shutter and write the images to a portable drive!! This was the final step in a build that has taken 5 years to complete!!! Would have failed if this was did not work. Now I need to get to grips with Bugslabber...
by Andy Davies
Mon Feb 24, 2020 11:10 am
Forum: Equipment Discussions
Topic: Nikon D810 control and image transfer
Replies: 8
Views: 731

Nikon D810 control and image transfer

I am triggering the D810 via the ISO 519 sync terminal with an Arduino Mega. The camera is also connected to my laptop via the USB3 port to my laptop with qDSLR Dashboard so that I can record the images to a portable disk connected to the laptop. The problem I have is that I cannot trigger the camer...
by Andy Davies
Sun Feb 23, 2020 6:15 am
Forum: Equipment Exchange
Topic: Wanted: Zeiss darkfield epi head
Replies: 5
Views: 2079

I still haven't seen one. I'm looking for one for an Ultraphot/Photomic.
by Andy Davies
Sun Dec 15, 2019 5:38 pm
Forum: Equipment Discussions
Topic: Nikon Z6 with and without FTZ adapter
Replies: 1
Views: 290

Nikon Z6 with and without FTZ adapter

What will be the consequence of using a Nikon Z6 with a Z fit reversing ring when mounted on a microscope or tubes as opposed to using the FTZ adapter and a BR2a reversing ring?

I suppose the option without the adapter will give a wider field of view?
by Andy Davies
Fri Oct 11, 2019 8:54 am
Forum: Equipment Discussions
Topic: Revisiting best single die LED for microscope
Replies: 2
Views: 555

Hi Pau

I am using the same one as yours but I bought it a couple of years ago and was wondering if there had been any advances.
by Andy Davies
Fri Oct 11, 2019 5:27 am
Forum: Equipment Discussions
Topic: Revisiting best single die LED for microscope
Replies: 2
Views: 555

Revisiting best single die LED for microscope

Interested in the latest recommendations. Currently using a 10W Cree T6 which is bright but has a poor CRI.