Temper Gold USB temperature sensor

I’ve been using some of these https://www.phoronix.com/scan.php?page=article&item=ebest-temper-linux&num=1 USB temperature sensors with an RPi to log a number of house heating/power generation/use parameters.

Exact model used, image from original sales link (Phoronix.com)

I’ve found them to have a pretty whacky offset error (2-3C at room temp) which is easy to correct, but they have a horrendous “sticky” temperature characteristic. It isn’t a ceiling, as shown above, it’s a sticky value. If the temps pass a long way away from this point it continues to update – it just seems to get locked into a value rather than update it. This was noted by Steve Timms (http://www.thermohid.co.uk/) too and seems to happen at fixed temps on each device. For me, it’s infuriating as it’s right around temperatures I want to have accurate data at. I honestly couldn’t recommend these to anyone because of this, but they do the job for now.

Garmin Fenix 5 – Strap and Skin irritation or Allergy

No idea why Garmin’s products seem to do this to me, but this happens whenever I wear them…

So I had to return my Vivoactive HR because it leaked when swimming in the sea, at 12 months and 2 weeks old.

At first, Garmin refused to accept it under warranty/guarantee and said I’d be charged for repair. I tried to return it via Amazon but they had removed the returns link. I pointed out that under EU law, I had 2 years to return it and they instantly sent me a returns label email – nice try, Amazon. So I gets me a Fenix 5 – lovely looking watch, good features – does what I need……

Almost instantaneous red colour appears, then over the day my skin peels and falls off. This gets continually worse unless I leave them off for a week or two and it clears up. 

And it’s not just the strap area by the looks of it.

Contacting Garmin I was told to wash it (by a number of different folk, in a number of different ways – IPA, water, soap and water, leave it on in the shower, take it off in the shower) – thanks, like I don’t wash lol I tried all of the above, none of them work.

The only answer, to using a watch designed to be kept on 24/7, is to take it off for a week at a time, or put up with my arm peeling and looking very angry.

This doesn’t happen as much with a cheapy chinese stainless steel strap (only around the watch body area, not the strap) so it looks like the primary cause is the strap material. It happened with my VAHR too. Unfortunately there’s no decent alternatives out there other than a half kilo of stainless.

I’ve no idea if it’s an allergy, some form of irritation, or what. But it’s not really acceptable. If Garmin would hurry up and release the Ti strap I’d be really happy, other than the price tag which is half the cost of the watch again for a strap.



Some new kitesurfing products on Shapeways

Here’s a GoPro mount for your kite board fin plate (needs a brass insert for the thumbscrew)….


and here’s a board leash for those of us who ride in places where a leash is useful – again, attaches where the fin plate would be…


Voltarol Medicated Plasters

Totally didn’t expect these to work Voltarol Medicated Plasters but was pleasantly surprised. I assumed these would be barely noticeable in performance and, having just twinged my back again for the first time in ages, I thought I’d risk the £10 for 2 (seems a bit steep).  I stuck one on and went about my day.

After about half an hour I noticed the absence of pain, even when doing things that normally trigger agony. Very weird. Oral medication rarely is this effective. unless it’s prescription.

The one negative I did find, and it IS a fairly big negative, is that if you’re not careful one corner will roll off your skin. The now upward stick face sticks to your T-shirt and gradually, without you knowing, rolls itself off and sticks itself to itself/your tshirt and you CAN NOT get the damn thing apart again to re-apply. On my first one it was reaching about the 10 hour mark, so I wasn’t too annoyed, but if it happens in the first 10 minutes, as it did on my second one, you lose a £5 plaster in 10 minutes. Super frustrating. Not sure how this could be resolved, but the folks at Volterol might have a smart idea!

CNC Machine now back alive again

I’ve been tinkering with the G0704 based CNC machine’s spindle controller again, and now it’s able to step and direction control to give me fully automatic spindle speed control.

As you can see, it’s now at least able to home itself properly again. Soon the touch probe will be here and I’ll be able to start making chips again, but I’ve still got some motor guards to make up and the flood coolant pipework to sort out.

CNC nearly alive again

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