JOURNAL

2 JULY 2025 (Idea and Development)

(1PM-5PM)

After Creating TOYZY The 3D printer I thought that what will be my first build ,the Thought was just entered in my mind And after a deepthought a thought i should watch and complete squid game web series on NETFLIX ,and During it a sudden thought came to my mind that i should build a Ganola candy 3D model ,after many Rejection to the idea ,finally stood for one that ishoud build and umbrela logo and integrate it with NFC and a some leds for light

So after some RnD about the design and creating several models finally landed on This Though it was not looking like candy so Decided to Give a Colour and And Transparent View for led clock

Though i was aleady have some knowledge about arduino boards which i got in the last week creating a 3d printer so moved to circuit part and decide to use ardiuno nano with WS2812B led strip light and NT3H2111W0FT1X nfc chip and a custom made coil for nfc

1st Challenge

during the Whole Project I forgot to Save My files and Chekup the Disk Storage ,so when I took a break for 30 minutes and came back got know nothing was left as the fusion keep on consuming battery as it was on performanc + quality mode it made battery drain , after a restart dont know why i get a message that restored files of fusion got corrupted ,so I have To make It From Zero So Diceded To It Tommorow

Total Time of THe Day:- 5 Hours

3 JULY 2025 (Completion)

(3PM-6PM)

after yesterdays lost i was bit Depressed, but i am hard core speed runner today my goal was to Complete it in just 2 Hours
i quicky made a case for the Deck And The Umbrella And Also Decided to add NFC logo which tried tommorrow but messed it up so after 30 minuts i created some of these things now it was time to finilze the pcb and add it to the model so Just check if everything was right but got little bit confused ,but being confident i move on with scheme that made yeseterday i quickly arranged the components to board and add some silkscreen to it to make it look good then Exported it as 3d modeland and added to the fusion make things arranged and put a lyer of glass and added umbrella on top, Just Iam Left With The Firmware Part to upload ,but i beilve in Testing First So Would test it The components first and Then Make Some Changes if required )

please let me know if there is somthing wrong in circuit , as i have not have that much experience with NFC CHips yeah i now the model is now more bigger in height and is changed, but trust me it is less than 1.8 cm in real as i have planed to make it edge to edge with the engraving tool and manually fix it and will add the usb port after manual and some physical changes to the model as these things can be fixed by understandings things when there are in hand . I have Also Decided to Giveaway a deck and some real dalgona candies read the read.me to get more details... Total Time of THe Day:- 3 Hours

20 June 2026 (PCB V2)

yah i as i was dumb last year i had a lot of bad connections and dumb connections , maybe due to not reading the datasheet througly , anyway it need me to fix the schematic and order the pcb again , the nfc cheap requires level shifter for the 5v nano signlas to make into 3.3v so i decided to use bare BSS138BK level shifter with two caps and yah i needed 3 of them for sda , scl and fd , i used netlables and text box this time cuz i didnt knew that much before and just made a thingi which could blow up the whole baord and chip the schematic and everything looks like this , i have added two decoupling cpas for nfc out and leds , and now i am using tht resistors instrad of smd cu i want to solder em!! so yah i cant call it v2 but maybe a corrected version which would actully work

1 July 2026 (Finished Building)

so yah i recieved my pcb and started building so it was pretty easy to solder resisters as it is lol, after that i soldered the 3.3 regulator and those level shifter those were tiny and hard but i managed , after that i soldered the led and caps , a blunder i did was kept the decopling cap far from led so it needed me to solder directly to the led ring , after all the easy connection i decided to solder the main nfc chip which i had only one piece !! , so carfully position with 1 pin , sinc it have no mark but a slopped edge , it was easy to solder than i thought but yah it was time to upload the code , and beofre that i forgot i have kept the main 5v seperate so for now i powering it from the nano and kept the brightness of the led as low as possible to limit the current flowing through nano , any ways i just made a coil with copper wire and soldered to the nfc chip anettena pins and yah now i hope it works , and wallah i did some tweaks in code and the nano is able to find the nfc and i2c chip and the fd thingi is working when i bringing the phone nearby :D yay , here you it looks like currentlly , no i will print a case and add battery and maybe a esp moudule for clock :P