LEDCard is a DIY credit card-sized macro ring light for smartphone photography

Github user Helge Wurst, known as MisterHW, has created an open-source, DIY LED ring light roughly the size of a credit card, making it a perfect pocketable companion for macro images on the go with your smartphone. The LEDCard not only provides an LED ring light but also incorporates an acrylic macro lens for capturing close-up shots without a specific macro function on your smartphone. In its latest iteration, as outlined by Hackaday, Wurst's LEDCard is built 'using a single PCD with rechargea...