connectors.md

HackEEG Connector Pinouts

Electrode Connector

JP16 is the electrode connector.

Electrode connector pinout:

Pin #	Function
1	DVDD
2	AVDD
3	BIASINV
4	Reserved for Future Use
5	AGND
6	AGND
7	IN1P
8	IN1N
9	IN2P
10	IN2N
11	IN3P
12	IN3N
13	IN4P
14	IN4N
15	IN5P
16	IN5N
17	IN6P
18	IN6N
19	IN7P
20	IN7N
21	IN8P
22	IN8N
23	REF_ELEC_CONN
24	BIAS_ELEC_CONN

Looking at the pins edge on (not from above), this is the pinout diagram:

External Sync connector

This connector is experimental, and not supported at this time. You can enable it using the various ADS1299 register settings.

External Sync connector pinout

Pin #	Function
1	BIASINV
2	ADS_START
3	ADS_SPI_CLK
4	AGND

Checking the connector pinouts against the schematic

If you want to check the pinout, you can see the connectors on the schematic on sheet 2:

HackEEG Shield schematic

Making cables

Electrode Connector cables

JP16 is the large, black male 24-pin shrouded electrode connector that is soldered on the board: On Shore Technology 24-pin right angle male shrouded header

This the mating female connector that I use to construct ribbon cables to connect the connector boards with the HackEEG shield:

On Shore Technologies 101-246 IDC socket connector for ribbon cable

Here's the ribbon cable I used:

24-conductor ribbon cable, 5 foot length

You'll need a tool to crimp them, I used this one from Amazon:

IDC crimp tool

Alternatively, any 24-pin female header with receptacles on 0.1" centers should work if you want to use one and solder some wires to it.

External Sync Connector cables

JP15 is the small, white male 4-pin shrouded connector that is used for synchronizing the ADS1299 with another board.

This is the connector that is soldered on the board: JST 4-pin Shrouded Male Header

Here is the Mating JST connector and Crimp Contact that fits the housing - these can be crimped with this tool:

HT-225D Full Cycle Ratchet Crimping Tool with interchangeable die set HT-225D