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Arduino fast sampling technique for high frequency signal
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- Опубликовано: 4 сен 2021
- you will learn how to sample analog signal in very fast speed. This technique will help your sampling high frequency signal using Arduino. I remember, Many people made these mistakes when building line following robot.
The same method I teach here applies to any embedded and microcontroller system.
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I am Shuvangkar Das, an electrical engineer but I prefer to introduce myself as a passionate engineer who loves to build things. I have completed my undergraduate from BUET, Bangladesh, and currently doing my Ph.D. in the USA. I have been working with hardware since 2013 and developed many products and completed many projects. Now I am a full-time researcher but I love to share my hardware knowledge with you. That's why making these videos on the weekend and free time.
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#arduino #sampling #high_speed
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Thank you for your demo, I have the same problem in tinkercad arduino simulation.
You could also increase the performance between sample bursts by increasing the baud rate to as high as the chip goes. 9600 baud is pretty slow...
thanks for the great video!
Sehr gut
Thanks for sharing the video. I used H3LIS331DL 3- axis accelerometer sensor which interface with Arduino Uno board. The fast sampling technique you explained here, can I use it for my work.
Sure! Go ahead.
Great example!
What to do when I have to read a high frequency signal and need to store for 4 atleast 4 second.
Analog buffer does not give sufficient space.
It is doable. I have done that one of my projects. I have sampled continuously and saved in SD card at 1KSPS. The idea here is, you have to sample the signal using ADC interrupt. You need a dual buffers. When one buffer will be filled up, store or send that buffer to serial. By that time store data in other buffer. Pointer will come handy in such situation. I forget exactly, Arduino SDfat library has such examples.
@@ShuvangkarDas thank you for your valuable reply. I will follow these steps. If possible please make one video using that concept also.
What is the *MAXIMUM* _sampling rate_ for an Arduino? I would like to be able to sample a transient signal with an *8 MICROsecond* rise time. Can an Arduino sample that fast? If not, how about other chipsets, such as *_ESP32?_*
For Uno, I was able to sample 8Ksps. ESP32 will be able to handle 8us.
helpful!
Great video
Thanks man
Sir will you please tell me the sampling frequency of Arduino Uno
in this code and also maximum buffer size of Arduino uno
It’s a good question. I forget the exact number from datasheet. For 10 bit sampling frequency around 8Khz. Buffer size is limited by Ram size. Arduino Uno had 2KB of Ram and 9% consumed by Arduino libraries so and for storing 1adc value you need 2 bytes. So you can safely store around 800 samples in a single loop.
Hi, first of all, it is a very nice video tutorial to get into Arduino. I have just started with Arduino and do not know much about it. Actually, I did exactly the same as you have done and ran the simulation in Poteus, but I didn't get the exact sine wave in serial plotter. I Just got the upper halve of a sine Wave and the lower half was just 0 with a flat line.
Could you tell me, how to fix that problem and how I can get the full sine wave.
Thank you very much in advance!!!
Arduino Uno can only read positive voltage, 0-5V. So you have to add DC offset to your signal to see negative half. Thanks.
Sir I am working on ac voltage sampling.. how can I get ac voltage sample by pic microcontroller..?
For PIC, you have to write code fot adc and uart module. You will get a lot of resources on that online.
جزاك الله خيرا وهداك لدين الإسلام ❤
Jazak Allah Khayr ❤
Read about Islam please, I really hope Allah guide you, you're a good man
Nice Video!
What software is this? i cant find anything under ISIS Professional
Thanks! :)
proteus
If i want to take sampling points every certain times how can i do that
You can do that in two ways.
1. Use ADC interrupt
2. Use timer interrupt and read adc value inside the timer interrupt( less efficient than method 1)
Deference btwn analog read vs external spi adc (Mcp32008) read
Different interfacing mechanism
Cant understand a word ..
Well I can! he's a great teacher tbh and if you need help you can ask and I'm sure someone will help including myself if I can