afliu
afliu
About
- Username
- afliu
- Location
- Beijing, China
- Joined
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- Member
- Location
- Beijing, China
Comments
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Arduino 1.6.6 build OpenBCI always failed when I tried follow "Upload code to mainbaord" guide, the error is below: C:\Users\Think\Documents\Arduino\OpenBCI_32bit\OpenBCI_32bit.ino:33:23: fatal error: OBCI32_SD.h: No such file or directory com…
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got it, thanks biomurph.
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Hi KZurn, Let me be clear, I did not complain DHL $50 delivery fee. Even, I would select DHL if I knew USPS is so slow at the very begining. I mean DHL and Fedex are alwasy fast. Even it will only take 1 week to deliver good from U.S to China. By …
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Thanks Biomurph.
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I ordered the Disposable / Reusable Dry Electrodes from http://fri-fl-shop.com one month ago. So far, I still did not get the order. even I checked USPS, it said that it is still in U.S. I have no choice but to pay another $50 for DHL delivery to re…
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Hi William, After filter 0.5~40Hz first, then routing to MAG and other elements, the result looks good, here is the snapshot for the reference. http://pan.baidu.com/s/1hqIZAoW http://pan.baidu.com/s/1kT90eV1 At the same time, I shared my configur…
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thanks William. I will follow your suggestion to update the configuraiton and re-run the testing, then let you let know the result. For the google stuff, by the way, we could not access it offically from China :-(. Need to "firewallwall break" by V…
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Thanks Biomurph. Both of my two boards works well now after replaced the D9.
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thanks for your location kind consideration, Biomurph. No worry about doing these "tedious" things, I am happy to do anything to isolate the problem. drop across D9 when power on: 0.01v drop across D9 when power off: 0.07v In order to confuse yo…
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yes, 0.01V is the voltage drop across the D8. For the DVDD, the output is 0.00V what I said 5.46V is the voltage drop across the D9. Looks like I did not isolate the issue :-(. Anyway, Here is the some voltage detailsAfter I changed the D8, here…
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Thanks for the remider, Biomurph. However, I have someone replace D8, but no lucky. It is still does not work. Even volt is 0.01v. By the way, looks like D9 works well, the volt is around 5.46v Any other suggestions? Thanks
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Thanks William. I ordered dry electrode from www.FRI-FL.com yesterday.
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Thanks William, Finally, I got diode D8 does not work, will replace it with new one. By the way, any idea why D8 does not work? Do we need to change to any type of diode?
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Willam, I measured the incong TOTAL battery volatage, the value was 6.11v. However, when I measure DVDD and GND header pins, the value was 0, not 3.3v. Looks like some component does not work :-(. Let me know if you have any suggestions to make …
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Conor, Could you share some details with your dry electrode? I 3D-printed the electorde with openbci recommented material, but the signal is not good. thanks, -Anfeng
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Hi William, thanks for the comments, please see the comments below: * What is your battery voltage? What type of AA cells? [Anfeng]: 1.5V (count: 4) * Have you altered the firmware on the main board (or dongle), or is it still running default fir…
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William, hi Really appreciated for your comments. In a training session, can we make quantitative analysis and use this quantitative value to show someone current anxiety degree? Take high beta, 20-30 hz as example, if we can, wihch amplitude val…
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Wjcroft, Thanks for the quick response and documents link, it is definitely helpful for me to understand more about EEG. Appreciated!!
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Hi, Wjcroft My bad for the wrong link, here is correct one: https://drive.google.com/file/d/0By4X4xbJLYIjUFkyMUlUaFdETTQ/view?pli=1 Actually, I did see the changes in the signal when eyes are opened vs. closed. However, I was confused that in th…
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https://drive.google.com/drive/folders/0By4X4xbJLYIjfklhSS1jb2JpcElScGhkZjhHOTVfeHFySkJ0NEtQTkVqc081VWl5TUp2dzA Add the snapshot above.