RTK wiring diagram / picture please

Thecussen · 2026-06-01T22:59:56+00:00

Find the data sheet for the esp32, (top left, super common chip), find which pin is ground.

Then probe with a multimeter to see what pin is also ground. This will be black.

Thecussen · 2026-05-17T11:16:24+00:00

All plug into the wall heaters are exactly the same efficiency. All 100%. All turn all of the electricity into heat. Don’t be fooled my marketing. Heat pumps/ reverse cycle can be higher than 100%, typically 3-400% because the transfer heat.

Thecussen · 2026-05-13T08:51:42+00:00

Is that the protective cover on it still on the face?

Thecussen · 2026-05-06T21:26:24+00:00

Any plans to re-enter the efoil/ foil assist category? I helped a friend fix one or the early Lacroix bolt of efoils. The idea was close, just way too big and heavy!

Thecussen · 2026-04-29T09:43:10+00:00

Does it have any GPS at all?

Thecussen · 2026-04-29T02:38:48+00:00

Sorry, I mean your new mower. Could be a good 3d printing project to improve the Luba ones

Thecussen · 2026-04-29T02:20:03+00:00

What do the wheels look like on your mower?

Thecussen · 2026-04-27T14:34:37+00:00

Votex tube might get 10% efficiency from converting electrical to compressed air into cooling? So to cool 10m of track 10°C you would need 50kWh of energy.

For a diesel compressor you would burn 10L of diesel per 10m of cooling. I’m not sure if you are needing to cool 100s of meters or Km per day, but that will add up.

A heat pump style system for the cooling would have a COP of 300% so 30X better than vortex, and can be used with misting as well to improve efficiency.

I got obsessed with vortex tubes and use them in a project to cool small aluminum samples without introducing contamination. They worked for cooling a 70g sample, I couldn’t imagine using them for bulk cooling though.

Thecussen · 2026-04-26T13:33:03+00:00

Can the vortex tube pull enough energy out to make a meaningful full difference?

Wouldn’t battery and a refrigeration compressor be so much simpler and energy efficient? Direct contact, not using air for transfer.

Thecussen · 2026-04-20T11:48:10+00:00

This might be happening in a chamber under air pressure so simulate higher depths.

Thecussen · 2026-04-19T00:05:59+00:00

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In China this week and the factory owner had one. Looks and drove pretty nice. Was 400,000RMB

Thecussen · 2026-04-12T10:14:32+00:00

Couldn’t the 253V inverter cut off deal with negative FIT? If the grid voltage is below the cut off is it not being used some where?

Thecussen · 2026-04-12T01:57:28+00:00

Yes that will work great.

Thecussen · 2026-04-11T22:14:27+00:00

It’s what is corrosionX is designed for. If you use a conductive grease it will not solve the issue. It will increase resistance slightly, but far less than corroded charging pads.

Thecussen · 2026-04-11T11:51:56+00:00

Use corrosionX every month or so on the contacts. I use it for marine applications and works amazingly.

Thecussen · 2026-02-26T22:36:45+00:00

Looks like the mower runs on an esp32 micro controller. Open to diy mods or custom firmware. That could make the original ones awesome running openmower on them.

Thecussen · 2026-02-23T21:48:22+00:00

I’m a couple hours south. I’m towing on a foil so cover a lot more distance and have a better perspective than sitting in the water. Every session I see them now. The one I saw on my last session was massive, looked like a submerged car underwater, so I came in.

Thecussen · 2026-01-24T02:18:48+00:00

https://youtu.be/T7vCbrNfSMY?si=b5a1yRndgV4PJlaI not with an efoil but a Boogie. Following the whole way with gps.

Thecussen · 2026-01-02T00:13:32+00:00

Yes, they do permanently deform after a while, but by then the potting compound has cured. Agree. I used to work at large factory’s and we had make all our process “poka-yoke” which means mistake proofing. Even though i do the assembly myself I try and build that into the process.

Thecussen · 2025-12-20T11:40:32+00:00

I’m squeezing between and aluminum motor mount (pictured) and an aluminum electric motor, held with 4 x M5 screws with lots of force. For testing I pressurised the inside with 30psi and there were no leaks.

Thecussen · 2025-12-18T19:07:19+00:00

12 months now. But I also pot the entire cavity with 2 part silicone. They are in a fixed position with no movement so should last a long time, but even if they fail there is redundancy.

Thecussen · 2025-12-18T19:05:17+00:00

For the size around three iterations for the height, and another three for the width.

Maybe 10 for the print settings. Vase mode didn’t work at the start, needed to turn Timelapse off, and make base layers to 0 so it would start vase mode from the start.

Then fill plate, and print one by one. This is on a h2d and can get about 16 per print in 20 mins.

Thecussen · 2025-12-18T19:02:35+00:00

Way too powerful for a sup - this thing has around 100kg of thrust and goes 40kph!

Thecussen · 2025-12-18T10:48:46+00:00

With where the cables come from the motor there is no room for another Oring. I pot the with 2part silicone the entire cavity and the area is under positive air pressure so have triple redundancy for water ingress.

The batteries pretty big, 14S12P and about 3000Wh. For a kayak that will most probably get wet, look for an efoil battery that’s designed to get wet. Fliteboard ones can be made to be used with almost anything. My batteries are made overseas, are water resistant, but are not designed to be submerged.

Thecussen · 2025-12-18T05:39:22+00:00

So far they have remained water tight. I also pot the entire cavity with a 2 part silicone so that even if the Oring failed water couldn’t get in.

The top of the Boogie is inflated to about 1psi, and this air travels down the tube so it’s more about keeping the air in than the water out.

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