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Qwiic JST Connector - SMD 4-Pin (Vertical)
Here is a tiny 4-pin, 1mm pitch Qwiic (or JST) connector. This connector mounts to allow you to connect your cable vertically, great for tight spaces. This connector is used on all of our Qwiic-based boards and can be used to create your own I2C-based device compatible with the Qwiic system. Additionally, this connector will mate with all of our Qwiic cables with a solid lock.
The SparkFun Qwiic connect system is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
- Part #: BM04B-SRSS-TB (but we had it made in black)
- Datasheet
- Qwiic Landing Page
Qwiic JST Connector - SMD 4-Pin (Vertical) Product Help and Resources
Qwiic pHAT for Raspberry Pi Hookup Guide
May 23, 2019
Get started interfacing your Qwiic enabled boards with your Raspberry Pi. The Qwiic pHAT connects the I2C bus (GND, 3.3V, SDA, and SCL) on your Raspberry Pi to an array of Qwiic connectors.
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I found out the hard way that although it is possible (though difficult) to solder a vertical JST connector onto a footprint for a horizontal connector, the pins will be reversed (that is to say, GND will be where SCL should be, 3.3V where SDA should be, SDA will be where 3.3V should be, and SCL will be where GND should be).
I'm posting this as a cautionary tale for others!
I will also post a cautionary message since it seems that this hasn't been addressed in the four years since the last one. The pinout for this connector on all of the Sparkfun designs is backwards from what is shown in the JST datasheet. Sparkfun, if you're going to do that, please put out your own datasheet showing the numbering for the "PRT-16766" part instead of pointing to the JST datasheet that has reversed pin ordering.