Last Updated on July 17, 2024 by pg@petergamma.org
Four years ago, Indonesian scientists developed a 32 channel EEG headset by reading out for Front-End Analog to Digital Converter (ADC) ADS1299EEG-FE with daisy chain algorgorithm:
Event today heroic developer still struggle to solve this problem in the www.openbci.com forum :
https://openbci.com/forum/index.php?p=/discussion/1198/question-about-ads1299-daisy-chain-with-stm32
But they failed with the the 3.th ADS1299 as for instance laumung in July 2017:
«Hi everyone, I have made some progress. I can read data from the first two ADS1299 through daisy-chain. But the data of the third is still 0xff. How many ADS1299s could be made up into one daisy-chain? Thank you very much.»
Actually four ADS1299 where integrated by Indonesian researchers to get 32 channels. But the code has not been published by the researchers.
Was the work of Peter Gamma from www.petergamma.org about the ADS1299 not heroic, too? 1175 posts about EEG:
https://petergamma.org/category/eeg-devices
And still no affordable 32 channel EEG device available exept for the Epoc Flex 32 with only 12 bit sampling rate?
Would it not be better than trying to integrate multiple ADS1299 using DaisyChain, to sample multiple ADS1299 chips at exactly the same time with PiEEG:
https://forums.raspberrypi.com/viewtopic.php?t=363167
Eventually when you try to build the most affordable device with more than 8 channel with ADS1299. But if you are looking for the most affordable device, would it not be better to choose a device based on InfluxDB and TGAM?
What is your opinion about this topic? Write it in the comments below.
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