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I know that shields are usually soldered to headers so they can be attached to the board with the Arduino. I have a tremor, which makes soldering impossible. Are there ways of connecting PCBs without soldering?

If a concrete example would be helpful, I would like to connect the Adafruit WINC1500 WiFi Shield to a SparkFun RedBoard.

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Sparkfun has a lot of sensor boards that use their Qwiic Connect System. Those you can just plug in, and even chain together, with their cables with JST connectors.

Adafruit has their Flora like of products. Mostly tailored to wearables, but with their large connector pads, you can easily connect the board to the sensors wit alligator clips.

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  • It seems to be standard for header pins to not be soldered in, but added separately, in breakouts and shields. You could go to a local maker-space. Those people tend to be more than happy to help solder in a few headers. – Gerben Jun 8 '19 at 16:10
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Yes, there are ways. There is a system called "Press Fit" where the pins have a bulge in one end of them. This grips the inside of the holes in place of soldering.

A number of companies make them, such as TE Connectivity and Positronic.

Of course, these depend on the holes being just the right size, and finding the right connectors could be tricky... so... your mileage may vary.

But nothing is better than getting someone to solder the pins for you. You could teach one of your younger relatives to solder, for example...

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    Interesting. I hadn't heard of Press Fit. Thanks for teaching me something new. (voted) – Duncan C Jun 7 '19 at 22:33
  • Thank you! I probably will have someone do the soldering for me, but I want to understand the full solution space. – Ellen Spertus Jun 7 '19 at 22:36
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Boards with headers can be connected using jumper wires or hookup wire. If there are no headers then I don't think you will be able to get a reliable connection without soldering.

The RedBoard you linked to uses headers, so you should be able to use jumpers with it, but I suspect you are out of luck with the WiFi shield. You'll probably either need to find a version that is built using headers or ask/hire somebody to solder headers onto it for you.

As for the center portion of the shield you should probably just skip that part and use a breadboard, which uses jumpers or hook-up wires.

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