You are right for the product links!

As for the DIY Javacard, the process is straight forward. 

- Build or download the applet file. 
- Download GlobalPlatform, the tool that will help you to flash your smartcard. 
- Plug the smartcard to a smartcard or NFC reader. 
- Flash your smartcard. 

Regarding the video, check this one: https://youtu.be/Y-bmiHC5PRk?feature=shared


Satochip_

Looks really interesting. I'd be really curious to see a walk-through video on it. Right now it's a little vague in my mind, as to how it all works.

https://satochip.io/product/satochip/

https://satochip.io/product/card-for-diy-project/

bitcoin

[DIY] Open-source Bitcoin signing device for less than 25 bucks

Looks really interesting. I'd be really curious to see a walk-through video on it. Right now it's a little vague in my mind, as to how it all works. 

And so this is the place to buy - https://satochip.io/product/satochip/? And the product would be this one:
https://satochip.io/product/card-for-diy-project/?

