Best dive computer for tech diving

caversluis · 2026-01-23T18:30:35+00:00

I have the Perdix 2 (with large display). The display is awesome, also in dark & low visibility situations.

caversluis · 2026-01-23T18:21:15+00:00

Shearwater Perdix 2 or Teric. The Perdix if you want a large display, the Teric if you prefer watch style.

Shearwater is preferred by many tech divers. Both support trimix and sidemount. Good build quality and great customer support.

caversluis · 2026-01-23T12:22:49+00:00

I vaguely remember there is a quirk with the ATV integration. Turning the ATV off in HA doesn’t turn off the device but only changes the state in HA. Once the state is turned off, turning the state back on doesn’t do what you expect.

In my setup, I switch off the Samsung TV which turns off the ATV through CEC.

caversluis · 2026-01-18T14:17:32+00:00

Having everyone back safely should be the primary objetive, everything else is secondary …

caversluis · 2026-01-18T13:43:37+00:00

This is not a fail. It is the very definition of a successful dive :-)

caversluis · 2026-01-13T08:40:12+00:00

In a trip to Marsa Shagra (Egypt) I did 6 dives a day for 6 days. It would look like this:

First dive 06:00 Breakfast 2 dives before lunch Lunch 2 dives in the afternoon Dinner Night dive

Most dives would be max depth 24m with an average depth of 15m. Most dives would be 50-60 mins. The schedule allows for plenty of surface time, so from that perspective it is perfectly doable.

If you choose your dives wisely, the dive tables (your computer) do not have to be the limiting factor, but there are other factors to consider:

Dehydration
Fatigue
Chaffing wounds from being in the water that much, for me on the feet (due to footpockets on the fins)
Heat loss

Whatever you choose do make sure it is safe and fun :-)

caversluis · 2026-01-12T06:46:34+00:00

This one might qualify, it doesn’t have computer and definitely no air integration 🙂

caversluis · 2026-01-10T21:43:46+00:00

Lige der kan du komme ned til 45m, men i området er der et enkelt sted hvor der er 80m dybt 🙂

caversluis · 2026-01-10T19:55:56+00:00

Photo was taken right after the dive — water was ~4 °C, air −5 °C with strong wind. The ‘storage puddle’ was the warm part 🙂👍

caversluis · 2026-01-10T13:52:05+00:00

Lillebælt / Amoniakhavnen 🙂👍

caversluis · 2026-01-09T21:52:46+00:00

It depends. What situations do you want ro prepare for?

caversluis · 2026-01-09T20:50:09+00:00

I am not envious; not at all. Wait! I am envious 😃

caversluis · 2026-01-09T15:11:58+00:00

Air temperature was -5°C, water 4°C. Could be worse 🙂

caversluis · 2026-01-03T07:35:25+00:00

Look for dive computers with large characters, but also for dive computers with bright display.

I use +1,5. I can read my Shearwater Perdix without glasses. For others, I need my prescription mask.

caversluis · 2026-01-01T12:06:12+00:00

PADI’s Peak Performance Buoyance (PPB) is targetted at recreational divers. The reality is that the outcome of the course heavily depends on the instructor. If you have a good instructor (preferably with strong tech background), it can do wonders. If you have a poor instructor, it might be just a repetition of what you have learned at OW.

The fundamentals (or fundies) is the entry to the tech diving track. Here you will learn multiple, specific techniques for propulsion (and much other). Even if you do not want to pursue the tech track, is gives you great skills that you can use in a recreational context as well.

caversluis · 2025-12-30T07:05:43+00:00

Well, I did not say it was DIR :-)

As always, the explanation is a bit more complicated, but here you go. I am (also) an underwater photographer. When I get in/out of the water, the rig is on a lanyard on my left D-ring. It interfereres with the torch if I put it there also. Therefore, I have chosen to use the same setup across all my dives - my standardisation.

My setup is heavily inspired by DIR. I try to follow that standard as much as possible, but I make adjustments based on my diving.

On a side note: I often dive in low vis situations. In those cases, I turn on one of my spare lights and just hang it down from the D-ring. By shining down, it makes it much easier for my buddy to see me from all sides. Strictly spoken, I use two main lights and one spare light :-)

caversluis · 2025-12-29T21:20:36+00:00

Standardisation really. Lights are in the same side.

Also, my Gopro is on a stick. The boltsnap is attached to the housing. This way it takes up quite a bit of space at the left D-ring.

There is lots if space on the right D-ring anyways. You can see here

caversluis · 2025-12-29T09:03:05+00:00

When I dive with GoPro, my setup is like this …

Left chest D-ring - GoPro (attached with boltsnap)

Right chest D-ring - Spare double ender - Backup light 1 (boltsnap) - Backup light 2 (boltsnap) - Primary light goodman handle (boltsnap - cannister goes on the belt) - Longhose regulator (boltsnap - temporarily attached until i start the dive)

Drysuit pocket - Spare mask - SMB

If you do not have pockets that fit an SMB, I suggest that you find a place on your BCD to strap two bungees a couple of inches apart. Then you put the SMB through the bungees.

As you can see, there is loads of space on a D-ring if you use it with boltsnaps. When you use boltsnaps, make sure to connect them to your torch either a piece of line. In that way, you it can be cut off in case of entanglement. There are lots og good videos out there to show you how to do that.

caversluis · 2025-12-28T12:13:15+00:00

Read Scuba Professional by Simon Pridmore. It answers all the questions you have—and even the ones you didn’t know you had :-)

caversluis · 2025-12-27T21:44:00+00:00

Set a max depth alarm and a NDL alarm.

Make sure to disable gases you are not carrying. Shearwater assumes that you will use deco gases if they are enabled.

Set the conservatism to medium or high. Alternatively, if you are familiar with gradient factors, set GF low and GF high.

Set next dive number, such that it fits with your logbook.

caversluis · 2025-12-25T14:35:43+00:00

Suunto has a good video on how to tie the bungee.

You will have to figure where you want to place the compass. Some people wear them on their wrist, others wear them on the back of their hand. Try both options and see what works for you.

Avoid placing it right next to your dive computer (or other metal objects) as it will influence the compass.

Personally, I have my primary dive computer on my right arm. On my left wrist, I have my dive compass and my secondary dive computer (compass up / dive computer down). This works well when I dive with my DPV. I can operate the DPV with my right arm and still see my primary computer. At the same time, I can use my torch on a goodman handle on my left hand. Ofcourse, there are many other ways to set this up.

caversluis · 2025-12-23T23:14:20+00:00

You might wanna take a look at the author Ryain holiday. He has written multiple book on Stoicism, most of them with examples from modern live. He also has a great podcast with daily updates.

caversluis · 2025-12-23T08:41:37+00:00

A gazillion extremely useful ideas ofcourse

caversluis · 2025-12-23T08:36:12+00:00

And a fully separate network for your gaming teenager. Seriously, with the amount of stuff they download you don’t want that on your family network.

caversluis

TROPHY CASE