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Hey,
I'm new with programing and I do this thing just to get my bachelor degree and that's it. My project is just a lamp which works with scd-40 gas sensor, if CO2 is higher than 2000 ppm it will automatically turn on alarm. I can see values from my sensor using UART and everything works fine...
Thanks for your answer. When i used google ant was typing "How to connect gas sensor with stm32 using I2C" I saw some issue request with codes in which I saw this number. Now for example you can see this number in codes like this (somebody had soome issues with I2C, but still there are...
hello,
I'm new with I2C and I don't understand from where people are getting this 0x00707CBB timing adress in Stm32. I'm using Stm32wb55cgu6 and SCD-40 CO2 sesnor and i used this adress, everything works fine, but how to get it? Because when I just create and open stm32CubeIDE I only get...
Everything is overall written in this blog (not my project, but kinda same situation and now in this exact moment I can't share files). https://andybrown.me.uk/2021/10/10/stm32wb55/
I tried to connect bluetooth with serial bluetooth terminal where I could send and get info and my code just...
Hey,
A tittle is probably not the best for my question, but maybe someone did something with stm32wb55 and bluetooth? I thought that I can simple use some bluetooth serial terminals and connect my project to it, but in conclusion nothing worked as I thought. So probably the best option is to...
But why I need "Seiko"? I just used XO from stm32 datasheet. And overall if that is a problem, can I use OX like in this project?https://andybrown.me.uk/2021/10/10/stm32wb55/
So i should not use both C's with this XO? And overall I need to use different XO? Sorry for questions, but it's first my and my friend bigger project.
U4 - https://www.mouser.lt/datasheet/2/389/dm00344191-1798909.pdf
XO - https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-306&lang=en
and onother one which i use - https://www.mouser.lt/datasheet/2/905/ndk_08142018_NX2016SA-32M-EXS00A-CS06465_SS-1389053.pdf
1. It need to be in this possision. It's not my own pcb, I just need to calculate things that I asked in this post, so original owner said, that this need to be like this.
2.Dielectric height - is 0,2104mm?
3.So that i choose 0.07 is good?
My path lenght (if I understand that correctly) is shown in picture below. And my crystal oscillator is 32MHz. So in this case my max trace lenght is more than enough, yes?
hello everyone,
I do not understand how to calculate diff pairs with saturn or Sierra circuits programs. I need to route 100ohm (this line is from crystal oscillator to microcontroller so 100 ohm is right yes?) impedance diff pair line. I'm trying to calculate it, but I don't understand what...
I just asked my proffesor from university and he confirmed that, if I use 0.36mm net with matching circuit I will not get stable 50 ohm impedance because of matching circuit components, but he did not say any words how to solve it :) Maybe other will know how to fix it.
But there should be a better way to do it, because these footprints are made by datasheets, so it's all ok with them and I don't wnat to make them smaller or use other. I saw videos from youtube how to do it, but most of them didn't work, because they are saying to add prepreg layer, but I don't...
Hello everyone,
I'm using smd antenna with matching circuit ( R14 = L14) and i can't find optimal net width for 50 ohm impedance. If i'm doing it with saturn it shows me that net width need to be 0.36mm, but my matching circuit components footprint are much larger than that and if I use this...
Hello guys, I'm using "216990-0003" USB type C with this configuratio which you can see in my schematic. Now I can't understand how much amps my USB port delivers, because few people said that it delivers 0,5A, other that more than that, so actually how much? And what track width I need for that...
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