There were no pens that fit in the hole to reset the Wi-Fi connection.

I'm also not home so I can't check the EZ-B with a different battery or check with a different battery.

First thing I would check is the fuse then look at the board see if anything looks burnt.

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I do have good news, I did buy an EZ-B that did come with a base. So I can use that ones fuse for this. I also ordered a humanoid base so I don't need the base anyway.

I'm hoping, like Herr Ball mentioned, that your fuse is blown. I really know that feeling in the pit of the stomach when stuff like this happens to me. Good luck!

if you need a new fuse then it's simply a 20 amp automotive mini blade fuse. Here's the link on EZ Robot's age on how to replace it:  https://www.ez-robot.com/learning-robotics-fuse-replacement-humanoid-robot-kit.html

Honestly, this will happen at least once to anyone using an EZ-B. This isn't the fault of EZ-Robot or any of the original designers. The fuse is designed to be used at least once. It's like a case on a phone, you will drop your phone at least once and the case can prevent damage to your phone. There's a reason why the fuse is needed, for reasons like this. I still have other batteries that I can test the EZ-B with, and I have to wait until the parts ship. If the EZ-B is broken, I won't be happy. I bet it's the fuse.

The bad news is that shipping takes three weeks.

Open up the base and you'll see the fuse. Look closely at the center. You should be able to visually see if the filament is open or not . If you have a multimeter tester you can do a continuity test across the fuse to confirm if it's blown or not. Do a google search for lots of help on how to check a fuse or anything else for a continuous unopened path (continuity). It's a simple thing to do and a basic skill to have, especially when you're building robotics.

If it's blown just go down to a auto supply store and get a new one for a couple dollars. No need to wait 3 weeks to see if you have a bad fuse or not.

I do have even better news, I do have an extra Roli Rover body at home that I could use for it's fuse. I had to replace it because of motor and battery issues. If that one fails, I also have an extra dodecagon body with it's fuse as well that was also replaced so I think I'll be fine. I should have realized that using an all metal paperclip to reset the EZ-B was an awful idea. Again, I have to test it with another base and battery to make sure

I'm used to things shorting out anyway. At my high school, there was a computer with a broken USB port. Somehow, no one realized this. The reason why was because this was a journalism classroom where the students had to use external SD card readers that had to be moved from computer to computer. Since USB ports are only rated for a certain amount of insertions, the plastic inside the port fell out and ended up getting stuck inside the male USB port. The girl who had this happen to her had to use a paper clip and tweasers to get it out. This left some components inside of the computer exposed. When a connection was made, it shorted the motherboard causing a restart. Thankfully, only one port had this issue. I ended up swapping the front IO with one from a computer that was dead, and the issue was fixed. I did this with school permission.

I didn't fry anything. The fuse was fine and so was the EZ-B.