Author Topic: Life keeper  (Read 184 times)

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Life keeper
« on: July 10, 2020, 11:12:55 am »
Hello

 developed this pandemic days a low cost pulmonary ventilator..

Is not finished yet but i'm going to make a small description of it

it uses a nextion lcd screen that works via serial communication, a esp32 microcontroller, 3 servos, 3 ball valves and few sensors..

2 servos and valves are used for control intake of oxygen and air and one for the exhaust air
 
i made this for anyone would need so is opensource

i think it can be very useful for our projects and can be build with little money..

the screen is touch and so all buttons are programmable..

it can set alarms

it has a graph being ┬┤plot in real time of volume, flux, pressure and other parameters... so it can be customized for any purpose ..

You guys helped me in many times, this is my contribution with you! the ventilator program is not finished yet but is on the way
https://drive.google.com/drive/folders/126_qMhjsCeM4xDxlLFZ2Li_W_cCr9pD4?usp=sharing


Ah forgot to say the screen need to be at least 3.5`` for this program since it has 16MB of memory and smaller has only 4

files are there if anyone is interested in using and have questions i can answer it here..

Cheers




 
« Last Edit: July 10, 2020, 11:29:53 am by sebosfato »

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Re: Life keeper
« Reply #1 on: July 10, 2020, 11:16:33 am »
it needs a 5v supply for controler, a 6 volt supply for servos, and perhaps some isolated supplies for other sensors used with amplifier..

in the google drive you will find the 3d files the arduino ide program, the nextion vi, and the library for the nextion that has some modification i had to made...

the program uses the two cores of the esp 32 independently

is a supersketch

sensor i used until now is mp3v5010

it goes up to 10kpa and i use it for measuring air flow so i can calculate the volume..

its used as pressure sensor also for now

is very useful since it already provide internal amplification and is easy to use..

i didnt had to make any pcb for it but would be usefull just make a small one with the voltage regulators and sensors and enough outputs for feeding the servos screen etc.. it can be feed with a battery bank 12v and have a battery charger connected to the battery so its safe to operate for hours!

no buttons







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Re: Life keeper
« Reply #2 on: July 10, 2020, 11:29:27 am »
basically what im saying is that using this program is possible to evaluate how much hydrogen we generate with our equipments with very high accuracy

we just need to calibrate for it and is done...

the volume is the integral of the air flow over time and the flow is measured as a drop in pressure in a tube line...

how cool is this?

actually for it you just need the microcontroler and the sensor and you can see the results in the computer but the nextion screen makes it nicier as it adds buttons and graph plots portable etc

you may be able to build with less than 50 dollars i guess... here is much more expensive
 
seeing the flow and volume in the graph is useful so we can check how it behaves with our input to the hydrogen generator we are working with... 

could also use a current probe and voltage probe to display the power input  to the circuit... and even an electrostatic sensor whatever we want

few years ago it could be done with labview with 3000$ cdaqs kkk

i still have the labview here and it makes things easy but i would never buy it i only have because somehow i have some lucky friends...

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Re: Life keeper
« Reply #3 on: July 10, 2020, 20:37:41 pm »
Smoke cumin.
Kill the virus as soon as you get it.
Every time.