Spell Book and Magical Revealing Page

I created this magical spell book for our D&D campaign. the idea is that it opens to a blank page that reveals its secrets once magnetically activated. I modified the Sorcerer Tomb cover to fit inside a frame made from the Spell Book box model. The biggest challenge was creating the spell page. I did this by doing filament changes at different layers. 

Printing the Hidden Spell:

I found printing on a textured plate yielded the best results. 

2 layers of White  (any white should work) 

2-3 layers of Translucent (Glow-in-the-Dark filament also works)

The rest in Black to block out the light. 

You may want to print some test pages until you get the right ratio of layers for your specific filaments. 

Ideally the white should completely hide the etched patterns once in the book. the backlighting will do all the work. You can see some of my iterations in the photos. 

Cover:

I used a rainbow filament to print the textured cover and the color gradient change brought out the depth and detail. 

Construction & Wiring:

Everything can be constructed with superglue, magnets, and double-sided tape. I don't have a wiring diagram but I used my magnetic reed switch as my power switch. I also shorted the mp3 play-button in order to trigger on power-on along with the lights. The LED and the mp3 player were wired in parallel. no additional resisters were needed as the battery outputs 3.7V which is safe operating voltage for the LED ring and the mp3 player. 

The speaker should pressure-fit into the speaker grill. No adhesive should be required for the speaker. 

I used double stick tape to adhere the reed switch to the underside of the “Spell Page”. I recommend test fitting all the electronics and the wire leads so you don't block the visuals of the spell page.  The model I uploaded has a clear path along the center of the page you can use to tape down wires.

Sound: 

I created a sound effect to trigger when the back light illuminated. I used ElevenLabs to create a voice and edited it in Audible with some basic effects. This is entirely optional for the build. I included both an mp3 and Audible project file without the background music that I used, since I don't have permission to share it. 

Hardware: 

x4 5x2mm magnets (Book Back) https://www.amazon.com/dp/B0CCXKMBMM?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1

x4 6x3mm magnets (Book Pages) https://www.amazon.com/dp/B07873ZCY4?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_7&th=1

Super glue 

gorilla double sided tape

Electronics: 

Led Ring for backlight https://www.amazon.com/dp/B083W44B8N?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1 (I didn't use all the rings)

Note: the photos show a different led arrangement. 

Additional cables https://www.amazon.com/dp/B0D31HV4NC?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1

1200mAh 3.7V LiPo battery https://www.amazon.com/dp/B00J2QET64?ref=ppx_yo2ov_dt_b_fed_asin_title

mp3 push button module w/ 40mm speaker https://www.electronics123.com/shop/fn-ap02-sw-recordable-mp3-sound-module-for-toys-gift-boxes-push-switch-v1-1-11612?search=mp3#attr=3390,3391

JST PH2 Cable adaptor https://www.adafruit.com/product/261#tutorials

Adafruit bq25185 USB / DC / Solar Lithium Ion/Polymer charger https://www.adafruit.com/product/6091#tutorials 

Magnetic Reed Switches N/O  amazon.com/dp/B07YFBQ4HS?ref=ppx_yo2ov_dt_b_fed_asin_titleamazon.com/dp/B07YFBQ4HS?ref=ppx_yo2ov_dt_b_fed_asin_title