Arthur Brainville

It seems the only good option for a Zigbee thermostat if you need one without a neutral wire ther must close a 240volt line, is the Seimens RDZ100ZB. I got it, it works *okay* with ZHA on Home Assistant but I had to write a script to repeatedly write and check attributes with ZHA Toolkit from HACS

This also exposes to HomeKit (it's an "Apple" kind of household here, sorry) a working looking thermostat rather than one that does not apply and timeout randomly. The fact that the actual temperature adjustment may take 2 minutes behind the scenes is not a concern, as long as it actually works.

It seems the only good option for a Zigbee thermostat if you need one without a neutral wire ther must close a 240volt line, is the Seimens RDZ100ZB. I got it, it works *okay* with ZHA on Home Assistant but I had to write a script to repeatedly write and check attributes with ZHA Toolkit from HACS

(Because it’s obviously battery powered. Hope they last a decent time.)

It seems the only good option for a Zigbee thermostat if you need one without a neutral wire ther must close a 240volt line, is the Seimens RDZ100ZB. I got it, it works *okay* with ZHA on Home Assistant but I had to write a script to repeatedly write and check attributes with ZHA Toolkit from HACS

So, *another* french Olitec modem, slightny newer SelfMemory 56000 after a factory resest decided that it was okay wiht the 55 volt rms 25hz signal from the GrandStream and started printing `RING` in the serial console!

This is a useless information for most people, but I am very happy about the ringer circuit in a GrandStream HT813. It seems very happy to ring an old mechanical french analog phone, which expect anything between like 50 to 90 volts AC? Does a better job than the phone output of the Freebox Ultra.

Beside this, I am very annoyed than Free now does not let you simply use your VoIP service you pay them via SIP directly. (since 2019, it's not news, but it's the first time I need/want it) We're doing analog -> digital -> analog -> digital to have multiple phone extensions around the house now 🙈

It is perplexing that, a sensitometer like the one described in the ISO6 standard for black and white camera film testing, seems to not exist. The ones that seems to exist are made for X-ray film testing Nobody makes a device that expose daylight spectrum? Ilford and Kodak, what do they even use?

This video is great as it do clear up 2 things that throw off digital photographers - ISO is not changing sensitivity, it's how much gain on the signal before digitizing - Noise comes from lack of light, not "high ISO". - The practical advice is good But, it misses the origin of the confusion 🧵👇

Higher ISO film has bigger grains physically on the film. This allows each gran to be statistically more likely to receive "enough photons" so that they will reduce into metallic silver with a lesser amount of exposure.

This video is great as it do clear up 2 things that throw off digital photographers - ISO is not changing sensitivity, it's how much gain on the signal before digitizing - Noise comes from lack of light, not "high ISO". - The practical advice is good But, it misses the origin of the confusion 🧵👇

The "unit" used is derived from the ISO standard for film sensitivity. In this case, there is indeed a direct correlation between grain size and sensitivity of the film. The digital cameras are "fudging" this measurement so you can actually use the same exact computation of Exposure Values.

Maybe I am missing something, but I cannot find a good replica or a good analog of this input device on the space shuttle's cockpit that can be just used on a computer. It is called the THC: Translation Hand Controller, and is a 3 DoF device used for... Well, translation control in space!

I am wondering if it wouldn't be too hard to build something with a few hall effect sensors (49E linear hall effect sensors are super cheap) and a clever arrangement of springs instead of an expensive 3D mouse for CAD Or maybe like, 3 load cells, something like that.

Maybe I am missing something, but I cannot find a good replica or a good analog of this input device on the space shuttle's cockpit that can be just used on a computer. It is called the THC: Translation Hand Controller, and is a 3 DoF device used for... Well, translation control in space!