pre-sales question on ThinkPulse Active Electrodes

AlMuhanad

I have some questions about OpenBCI products, and I hope someone can help me.
Right now, I have the Gelfree BCI Electrode Cap Kit with the CytonDaisy 16-channel board.
I want to upgrade my setup, so I'm considering an upgrade to the ThinkPulse Active Electrodes kit, alongside the UltraCortex Mark IV EEG Headset .
1) Can the active electrodes be connected directly to a DAQ (Humusoft MF644) without using the CytonDaisy board?

2) If yes in (1), I want to ask how large is the raw output signal coming from the ThinkPulse active electrodes?

wjcroft

I already answered these questions when you emailed me the same exact text.

Hi Almuhanad,
Inserted some comments below.

Your best bet is to email your query to [email protected]. I am only the moderator for the Forum.

| On Tue, Feb 25, 2025 at 8:03 AM almuhanad aladawi muhanad.7777@gmail.com wrote:
| I have some questions about OpenBCI products, and I hope you can help me.
| Right now, I have the Gelfree BCI Electrode Cap Kit with the CytonDaisy 16-channel board.

I assume they are working for you.

| I want to upgrade my setup, so I'm considering an upgrade to the ThinkPulse Active Electrodes kit, alongside the UltraCortex Mark IV EEG Headset .
| 1) What product offers 16 Active electrodes (16 channels) compatible with Mark IV Headset?

I don't know if there is a combined 'bundle'. Sales may be able to give you a price discount.

| 2) Can the active electrodes be connected directly to a DAQ (Humusoft MF644) without using the CytonDaisy board?

The actives output a normal EEG microvolt level signal. However they also take an INPUT of the DC power supply and ground pins from the Cyton. Because there is a powered amplifier on each electrode. The DC supply, since it is battery powered and regulated, is very clean and stable.

https://docs.openbci.com/ThirdParty/ThinkPulse/ThinkPulse/

| 3) If yes in (2), I want to ask how large is the raw output signal coming from the active electrodes?

Same as signal level from passive EEG electrodes, usually in range of 0 to 100 uV.