This is an incredible design! I love the way you used decorative copper spirals on the covers as your switch! Thanks for taking the time to generously share your process and cut files! I would like to learn more about that super flat battery as well. Out of curiosity, might you know how it compares in terms of thickness to a CR2016 coin cell? Thanks, again!
Thanks! I’m glad you enjoyed the video and the pop up! The flat batteries I am using are 46mm by 24mm and .4mm thick. They are 3V and 35mAh (CR2016 cells are typically 3V and ~90mAh, as you likely know). They are about $6 USD apiece. I generally use CR2016 or CR2032 cells or a small adjustable power supply (Revely Microsystems Volt Works VW1 - no longer made, unfortunately) for prototyping and, just switch to the flat battery for the final piece. The same manufacturer also makes flat rechargeable LiPo cells. I have been thinking about trying those for these sorts of paper electronics to increase durability and reduce waste. Those are about twice as expensive.
That is the “cold roll applicator” (and laminator) I talk about briefly at about 0:31. This one is an old Xyron 900 machine. It puts an even film of adhesive on one side of that piece of the backing card, allowing me to stick the two inner panels to it in the section you reference. If you were doing something similar, you could also use a spray adhesive, dry transfer adhesive, glue stick, etc. The cold roll applicator just makes it a little easier in some situations.
Amazing! ❤
This is an incredible design! I love the way you used decorative copper spirals on the covers as your switch! Thanks for taking the time to generously share your process and cut files! I would like to learn more about that super flat battery as well. Out of curiosity, might you know how it compares in terms of thickness to a CR2016 coin cell? Thanks, again!
Thanks! I’m glad you enjoyed the video and the pop up!
The flat batteries I am using are 46mm by 24mm and .4mm thick. They are 3V and 35mAh (CR2016 cells are typically 3V and ~90mAh, as you likely know). They are about $6 USD apiece.
I generally use CR2016 or CR2032 cells or a small adjustable power supply (Revely Microsystems Volt Works VW1 - no longer made, unfortunately) for prototyping and, just switch to the flat battery for the final piece.
The same manufacturer also makes flat rechargeable LiPo cells. I have been thinking about trying those for these sorts of paper electronics to increase durability and reduce waste. Those are about twice as expensive.
2:44 can you please describe what you are doing here and what device you are using is?
That is the “cold roll applicator” (and laminator) I talk about briefly at about 0:31. This one is an old Xyron 900 machine. It puts an even film of adhesive on one side of that piece of the backing card, allowing me to stick the two inner panels to it in the section you reference. If you were doing something similar, you could also use a spray adhesive, dry transfer adhesive, glue stick, etc. The cold roll applicator just makes it a little easier in some situations.