First time posting regarding a nice product purchased from CE.
As the contributors here seem to be really helpful with advice, I figured this would be a good place to start regarding what I hope is a relatively simple project.
My rather creatively minded 11 year old son wants to work on a school project, but hasn’t been able to find suitable answers to his main questions anywhere, so as it was me who found the wireless charging module, I’m trying to help him with his main obstacle.
It goes something like this… (apologies for the detail but I’ll try to keep it brief)
He has designed a board game that requires several small moveable 3D printed pieces including various characters, aliens, spacecraft, base stations etc which all need to have the ability to light up by themselves, but as these pieces are quite small and need to be automated, batteries, wires and switches are out of the question.
They will however include very small LED’s that are powered by the charging module. I managed to find exactly what he was looking for after some research. The most suitable LED’s complete with coil are still available from Japan (albeit now extremely expensive) which seem to be left over from a failed Kickstarter project from 2014. (Links to images below)
I’ve now tried these LEDs with the DFRobot charging module and they do indeed light up nicely when placed over the transmitter coil, but here is the main hurdle.
Each moveable piece needs to light up automatically or not, depending where it is placed on the playing area of the board game. If it is placed on one section, it lights up. When placed elsewhere it does not.
The playing area is quite large… around 50 x 50 cms
Obviously one single coil isn’t suitable, as the board would require several coils, perhaps up to 12. So the questions are these…
How would he need to go about positioning and powering multiple transmitter modules built into the same surface?
Would each coil require its own board/module, or can a single transmitter module be used and connected to several coils?
Can the coils be made larger or smaller?
Many thanks for your answers and suggestions.