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tuecok vor 32 Minuten
Yes, it only works with an ESPdevKit equipped with ESP-WROOM-Module ! All buttons are working now.
Environmental Monitoring System with ESP32
polli vor 5 Stunden
Electrotechnicians say for a very long time that a pulsed dircet current is able to kill bacterias, viruses and tiny parasites. Schoolmedicine calls it quack science. As I don't think electronic peoplke are quack scientists, I wanted to prove the assertion. I took a water sample from a lake. As you sure know, there a a lot if tiny animals in a lake, observable under a microscope. I sent a 100 KHz signal into the water (10 Volt) and videoed it for 7 minutes. Then I made a timelapse of it, 7 minutes are sqeezed to 1 minute.  Hier you have the video: You can see all animals don't move anymore at the end of the video.  When you google "magnetic field sterilisation" you will find many papers regarding this topic, even a patent. Obviously bacterias know, when it is sterilisation, then they die. When it is cure for the illness, they do not die according to schollmedicine (sarcasm off) So maybe a squarewave generator helps you with corona,I don't know for sure, but I hope so. Just hold the 2 electrodes in your hands for 7 - 10 minutes. Use a frequency between 25 and 100 Khz.
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Steven N Colthorpe
Steven N Colthorpe vor 1 Tag
Hi,  I am no expert ( like nothing!!) on these devices, but I suggest anyone starting something should look at There is a lot of information buried in here.  To meet the spec of what the UK gov are asking  is beyond any individual, but I would really like to explorer the Ventilator-ish Device mentioned near the bottom. My idea would be to bolt a fan on the front of a 3d printed mask, and to have an arduino with Hbridge to push air in for a few seconds, pause then suck out. READ TEXT CAREFULLY. You can do severe harm with too much pressure or volume.  I would really love to get some medically trained persons opinion on this idea. It is extremely simple to make compared to 'bag' solutions could be produced in a lot of makers sheds from scrap bin, until a manufacturer could set up proper production. This is a very similar approach to welding respirators. Steve  
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780gordond vor 1 Tag
I can't think of any voltage or resistance test that would help with your LCD  problem. It seems pretty clear now that your LCD is different from mine. If you have a data sheet for the LCD you have you may have to dig into it. Otherwise you might have to search the net for example code. Alternately you may want to buy an LCD from Adafruit. I don't think I can offer anything else that would help.
Robust RTD-based Thermometer
Ioannis D. Kyriakidis
Ioannis D. Kyriakidis vor 2 Tagen
Well, a breathing device should have at least these: 1. HEPA filters in inlet and of course outlet (as the patient may have an infection we do not want to spread in the air) 2. Valves to control the inlet and outlet 3. An air compressor of some kind 4. Tank with compressed air as a reservoire.  5. Not absolutely necessary but helpful, also Oxygen addition to the fresh air inlet 6. A controller to control all of the above 7. Low power if possible so it can work on batteries for some time in case of power loss. I am willing to help in areas I know as an electronics engineer. But the project needs parts like flexible tubes, face masks and valves that I am not very much familiar with or can easily/cost bearable, source. Ioannis
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