krunchcard

Created by [slack: krunch] • Started on July 18, 2025

A card-sized NFC business card

July 18 - Schematic and Design (1.5 hours)

Click to expand Today I drew the schematic and chosen the parts for the PCB, I followed the [OnBoard tutorial](https://jams.hackclub.com/jam/hacker-card) for this image Most of the SMD componants are using the 1206 footprint since I am hand soldering them. I also added a few componants on the schematic so that the footprint will be shown on the PCB (I won't be soldering them, it's just a reference) image image The back of the PCB is going to be like a useful PCB design tool. **Time spent this session: 1.5 hours**

July 19 - PCB Layout (1 hour)

Click to expand Today I made the PCB layout, the size of the board is 85.5mm x 53.8mm (same size as a credit card). I put my info like my website and my GitHub profile on the front silkscreen layer and some various PCB design tools in the back image image **Time spent this session: 1 hours**

July 20 - Final Design (1.5 hours)

Click to expand Today I decided to make the PCB look better, since I have more experience with KiCad, I exported the EasyEDA project and imported it to KiCad. I started by drawing copper pours around the NFC antenna on both sides (so the card can be tapped on either side) image image And then I drew copper pour for the rest of the PCB. I decided to use hatched patterns for the top side since I think it would look quite good. image And I kept the bottom as solid pour. image I also replaced the keychain hole with one with pads on both sides image And then I added the Highway artwork to the bottom side image image **Time spent this session: 1.5 hours**