Was released in 2012, revised in 2017 and has a data sheet with 84 pages: https://www.ti.com/lit/ds/symlink/ads1299.pdf One of the latest products with ADS1299 is PiEEG with 4 channel which will be shipped on Nov 29, 2023. and PiEEG with 8 channel which will be shipped on on Apr 29, 2024. Home Assistant started in 2013.