HardLabs

Digital-B-Card

AhmedMKAlzoubi·Digital-B-Card·PCB-Schem/digital card.kicad_pcb

Digital-B-Card PCB layout, top view — open source ESP32 board by AhmedMKAlzoubi
Simulate this board

About the Digital-B-Card PCB

Digital-B-Card is an open source ESP32 PCB design by AhmedMKAlzoubi, published on GitHub. It is a 2-layer board measuring 100 × 60 mm, with 62 components from 29 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the MAX17048G_T10, AP2112K-3.3, NT3H2111W0FHKH and MCP73871-2CC. By type, the board carries 24 capacitors, 19 resistors, 6 diodes, 5 ICs, 3 connectors and 2 switches.

It belongs with the iot & wireless, power & battery and displays & leds designs in this gallery.

From the project

An ESP32-C3 based digital business card / badge with an e-paper display and NFC tap-to-share, designed as a custom PCB in a compact card/badge form factor.

An ESP32-C3 based digital business card / badge with an e-paper display and NFC tap-to-share, designed as a custom PCB in a compact card/badge form factor.

This project is a self-contained electronic business card. It combines a low-power microcontroller, an e-paper display for a persistent, battery-friendly visual, and an NFC tag for one-tap contact sharing on any NFC-enabled phone. The board is designed to fit inside a 3D-printed badge enclosure.

Main components on the Digital-B-Card

ESP32-C3-MINI-1MAX17048G_T10AP2112K-3.3NT3H2111W0FHKHMCP73871-2CC

Digital-B-Card bill of materials (BOM)

62 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-MINI-1
U1
1
MAX17048G_T10
U2
1
AP2112K-3.3
U3
1
NT3H2111W0FHKH
U4
1
MCP73871-2CC
U7
1
Q_NMOS_GSD
Q2
1
USB_C_Receptacle_USB2.0_16P
J1
1
Conn_01x02_Pin
J2
1
Conn_01x24_Socket
J3
1
Antenna_Loop
AE1
2
SW_Push
SW1, SW2
3
MBR0530
D1, D5, D6
3
LED
D2, D3, D4
1
L
L1
4
0.1uF
C1, C3, C8, C24
2
10uF
C2, C11
4
1uF
C4, C9, C10, C18
2
C
C5, C6
2
4.7uF
C7, C12
1
220nF
C13
Show 9 more
QtyPartRefs
1
21pF
C14
8
1uF
C15, C16, C17, C19, C20, C21, C22, C23
3
0
R1, R4, R5
8
10k
R2, R3, R8, R9, R12, R17, R18, R19
2
5.1K
R6, R7
1
3.3k
R10
1
24k
R11
3
470
R13, R14, R15
1
2.2
R16

Digital-B-Card design files

The KiCad project lives in the AhmedMKAlzoubi/Digital-B-Card repository on GitHub; these links point at the commit this page was built from.

Digital-B-Card: common questions

What microcontroller does the Digital-B-Card use?

The Digital-B-Card is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the Digital-B-Card PCB?

The Digital-B-Card measures 100 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Digital-B-Card?

62 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Digital-B-Card design files?

From the AhmedMKAlzoubi/Digital-B-Card repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Digital-B-Card design in my own project?

The repository has no license, so all rights stay with AhmedMKAlzoubi. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Digital-B-Card without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

Similar boards