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88 projects
2k
6
5
Door entry tools about the size of a credit card.
Project Owner Contributor

Credit card door entry tools

maaveMaave

215
1
1
this business card project it is not only business card size but also act like a business card.
Project Owner Contributor

business card size project act as business card

zameelzameel

1.6k
7
13
Solar powered business card designed to attract attention on a regular basis.
Project Owner Contributor

A Very Annoying Business Card

dead-rat-productionsDead Rat Productions

1.7k
10
14
Versatile and customizable business card and badge holder. Starting from a 0.8 mm RFID business card up to full featured badge holder.
Project Owner Contributor

'Swiss Army Knife' RFID LED Business Card

erichstygererich.styger

2.5k
28
31
Low-cost card-sized musical instrument with touch keys
Project Owner Contributor

Canta-Cart

ayuAyu

850
16
17
Create and build your own business card on a PCB with NFC capability
Project Owner Contributor

nfc business card

ziv-barcesatZiv Barcesat

4k
20
23
A RP2040 based MIPS emulator, running Ultrix/DECwindows in a business card format.
Project Owner Contributor

DECstation2040

rscott2049rscott2049

1.8k
23
21
wifi/ble and nfc connected business card.
Project Owner Contributor

dynamic nfc business card

0x0630ff0x0630ff

405
1
0
From DAC to ADC, with filters and amplifiers and attinys in between.
Project Owner Contributor

BAUDI/O

simon-bSimon B

670
4
4
A 2 PCB USB-C PD powered reflow hotplate in the form factor of a business for on the go reflow soldering
Project Owner Contributor

Reflow.Card

gangwa-labsGangwa Labs

894
30
25
A 64K Z80 computher that you cand build by yourself only with perfboards, wires and some components
Project Owner Contributor

The Homebrew Handwired Z80 Computer - H2Z80

jorisclaytonJorisclayton

398
6
8
Creating a business card to advertise oneself in a practical and useful way
Project Owner Contributor

The RGB Solar-Powered Flashlight Business Card

colin-catlinColin Catlin

1.3k
6
12
I2CDetect software utility built on a PCB business card.
Project Owner Contributor

I2CDetect Business Card

kris-bittleKris Bittle

1.5k
19
20
ESP32 controlled business card that connects to your phone or laptop and plays sound on a built in speaker.
Project Owner Contributor

Business Card Bluetooth Speaker

schwimmflugelSchwimmflugel

109
2
2
PixelCard is a business card generator with lots of blinky lights.
Project Owner Contributor

PixelCard

mynasruMynasru

662
9
10
My entry to the 2024 business card contest, a big-muff guitar pedal in a business card form factor !
Project Owner Contributor

Party in the front, business in the back

chloe-chateauChloe CHATEAU

894
7
10
A business card with a charlieplexed realtime clock and an ATtiny3227 development board.
Project Owner Contributor

Business Card + Clock + ATtiny3227 Dev Board

cheetahhenrycheetah_henry

2.8k
5
9
The thinnest functional business card in this contest. "Just make a QR code out of LEDs it'll only take a couple of hours."
Project Owner Contributor

Deadbug Business Card

chinchilla-optionalChinchilla Optional

1.3k
12
11
A different take to electronic business cards
Project Owner Contributor

Yet Another Business Card

kelu124kelu124

195
4
4
A 6-button capacitive macropad on a business card with NFC and an RP2040
Project Owner Contributor

Macropad on a Business Card

yspace-labsYSPACE Labs

1.1k
10
14
The idea is - a business card which is pre-programmed and will call to the business owner and you can talk from business card itself.
Project Owner Contributor

LTE Business card

sandeep-singhSandeep Singh

911
13
18
Simple VU Meter in a business card form factor
Project Owner Contributor

VU Meter Business Card

tjTJ

267
224
1
This is a voting machine used to cast and count votes electronically
Project Owner Contributor

Electronic Voting Machine

marwene-selmiMarwene Selmi

2.7k
7
7
A retro emulation system on a <=2mm thick business card, using ideas borrowed from other projects and a sprinkling of insanity...
Project Owner Contributor

RetroMedleyCard

eontronicsEontronics

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