GEng
GEng
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- GEng
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Hello William, Thanks for your repply! The datasheet is the same for the both chips, so I think the registers are the same. I'm wondering how the firmware works, for example if it waits the data of 8 channels to make a packet and the chip only…
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OK Thanks for your explanation Theese connections to AVDD can cause the signal is being clamped?Greetings
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Hi William, I followed what the datasheet says in the page 6: "(2) Connect unused analog inputs directly to AVDD." I connected all the unused all the analog inputs to AVDD, is that a problem? For example, I need the 1N in channel in respect to …
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William, hi. I did not measure alpha waves because I dont trust in the eeg signal... A did not change only the DVDD supply to one that has a wide input range but the same output voltage value. I need only six N channels in reference to SRB2, so c…
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I have found here that I was measuring the pins incorrectly The voltage on VREFP is right, but I dont know what is making the signal get digitilized without the negative part
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Hi wjcroft!Thanks a lot for your reply!
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OK. Thanks a lot for you help!
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Hey wjcrof, thanks for your reply!I was not clear, I'm sorry. I understand the functions of bias and the reference I just want to understand what happens electronically if I connect the GND pin of the board to the reference (SRB pin). I know t…
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wjcroft , I want to understand electronically what happens if I use the GND of the OpenBCI shorthed with reference (SRB pin or the negative input of PGA)? Because in the datasheet pag 69 and figure 74 a sine generator is connected to the PGA using …