Jellyfish PCB Card

A custom-designed PCB Business card inspired by isayx & ghastly. The main goal was to include an NFC chip/antenna to send a portfolio and a heart-rate sensor linked to LEDs as a fun way to create interactions.

I mainly worked on this because I wanted to challenge to construct my fully polished PCB device, and to get my foot in the door in learning electronics, KiCAD, and some SVG editors.

Schematic

Silkscreen

PCB Layout

Note: Ground Pour on Back Layer is not shown in these images

3D Render

Bill of Materials (for 2 Cards)

Designator	Part Kind	Part #	Manufacturer	Product link	Qty	Total Price ($)
C1	0.1uF	CC0805KRX7R9BB104	YAGEO	https://jlcpcb.com/partdetail/YAGEO-CC0805KRX7R9BB104/C49678	2	0.0184
C2	10uF	GRM21BR61H106KE43L	Murata Electronics	https://jlcpcb.com/partdetail/439567-GRM21BR61H106KE43L/C440198	2	0.6418
D1,D2	LED	NCD0805R1	Foshan NationStar Optoelectronics	https://jlcpcb.com/partdetail/85425-NCD0805R1/C84256	4	0.0532
R1,R2	330	0805W8F3300T5E	UNI-ROYAL(Uniroyal Elec)	https://jlcpcb.com/partdetail/18318-0805W8F3300T5E/C17630	4	0.0108
R3,R4	4.7k	0805W8F4701T5E	UNI-ROYAL(Uniroyal Elec)	https://jlcpcb.com/partdetail/18361-0805W8F4701T5E/C17673	4	0.0084
U1	MAX30102	MAX30102EFD+T	Analog Devices Inc./Maxim Integrated	https://jlcpcb.com/partdetail/7407610-MAX30102EFDT/C6454833	0 (2)	0 (26.26)
U2	ATtiny85-20S	ATTINY85-20SU	Microchip Technology	https://jlcpcb.com/partdetail/MicrochipTech-ATTINY8520SU/C31540447	0 (2)	0 (5.16)
U3	NT3H2211W0FHKH	NT3H2211W0FHKH	NXP Semicon	https://jlcpcb.com/partdetail/NXPSemicon-NT3H2211W0FHKH/C2905792	0 (2)	0 (1.88)
BT1	CR2032-BS-6-1	CR2032-BS-6-1	Q&J	https://jlcpcb.com/partdetail/QJ-CR2032_BS_61/C70377	0 (2)	0 (0.28)
					Total:	$0.74 ($0.37 per Card)
					Full Total (including NFC, battery, and sensor):	$34.32 ($17.16 per Card)

Note: I decided I'd buy the NFC chip, Attiny, Battery Cell & Holder, & Heartbeat myself, which is why they have 0 listed for price and quantity. The main cost is the Heart Rate/Oximeter sensor. I'm not sure if I could've found a cheaper option, so this may be a one-off thing

Note: Order from JLCPCB, which only includes the capacitors, LEDs, and resistors. I think a good chunk of this cost is the manufacturing, but I'm also completely new to this process, so I'm not sure what a 'good' price is. I do believe this is justifiable enough?

Note: The price went up, because my special order time ran out. It only went up by 2 dollars though.