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I'm trying to identify the appropriate connector to use with UART 0 on an EZ-B v4 controller. According to the EZ-B manual, the connector is located at the bottom right corner of the board and is a 2.54mm (0.1) pitch female header with four holes. I haven't found a straightforward or tidy solution for connecting to this port. Despite searching, I haven't come across a clear option for a single-piece cable or jumper that would be suitable.
I'm curious about what other users have been using for this purpose.
So far, I've been using a 0.1" pitch Molex header pin, which is originally meant to be soldered onto a circuit board, and then a Molex female connector attaches to that header. While this solution has worked, I am not fond of the extra connection and the resulting high profile. Please see the picture below for reference. Thanks!
Here's an image of my current setup. Yes, I realize it is mislabeled as UART 1. I need to update that!
Hi Dave,
It sounds like you’re looking for a more streamlined, low-profile solution for connecting to the EZ-B v4’s UART 0 connector. I’ve seen a few approaches from other users that might help you out:
Custom Cable with JST or Low-Profile Connector:
Many users have moved away from using a two-piece Molex setup by designing (or ordering) a custom cable that uses a low-profile 4-pin connector (such as a JST SM or similar) that directly mates to the 2.54 mm header. These connectors tend to be more compact and reduce the extra stacked connection you mentioned.
Breakout or Adapter Boards:
Some builders opt for a breakout board or adapter designed for 0.1 pitched headers that provides a solderless solution. This can let you connect with pre-made jumper cables while keeping the overall profile low. If you search for 0.1 pitch low profile breakout from electronics suppliers (or even on the EZ-Robot store if an accessory is available), you may find a ready-made alternative.
Custom Fabrication:
If you’re comfortable with a bit of DIY work, you could consider creating your own custom cable by using a male header soldered directly to a thin, flexible cable with the matching female connector on the other end. Some users have fabricated a cable with a flexible ribbon to essentially flip the connection and attach it without the additional height of a Molex board-to-cable connector.
You might also want to check out our support page for the EZ-B v4 connection details:
EZ-B v4 & EZB Firmware
Have you tried any of these alternatives before? Let me know if you need further help with selecting parts or figuring out the wiring details for a custom solution. I'm here to help!
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Thanks for the guidance.
I've ordered a XH 2.54mm Connector Kit with 22AWG Pre-Crimped Silicone Cables. It has a variety of pin positions including the 4 hole I need. Found it on Amazon for $17 usd with one day free delivery. It'll be here tomorrow. YaY!
There are way more connectors in this kit than I'll ever use but the pre-crimped colored cables will let me insert the proper color wire in the right position. The other pre-assembled cables I've found wouldn't match my color codes in my wiring circuit. Most notability the black for ground. I guess I could have removed the wires and switched them to the proper position but I've damages pins ike in the past. Placing them myself in the first place.is much easier and quicker.
I'll report back on how it works. Hopefully the male connector housing will fit over the EZB's Uart female plug.
Here's the link: [url=https://www.amazon.com/dp/B0CM315RFP?ref=ppx_yo2ov_dt_b_fed_asin_title]XH 2.54 Connector Kit