What number of occasions have you ever discovered your self messing with the sunshine whereas attempting to get a transparent close-up shot of an object? Whereas smartphones include fairly good cameras today, correctly illuminating a topic and taking spectacular macro pictures is not for them. right here [MisterHW]’s LEDCard He’s a really good good friend. Not solely does it present a credit score card-sized ring gentle, it additionally permits the attachment of a molded acrylic lens for high-quality macro pictures.
The undertaking in its present iteration consists of a single PCB with rechargeable Li-ion coin batteries (LIR2430) and a USB-powered cost controller. After charging the LEDCard (or inserting freshly charged Li-ion coin cells), the SMD LEDs will probably be illuminated by way of the LM3410 LED driver IC with a single button press. Press the ON button once more and the brightness modifications from medium depth to full depth. Lastly, urgent the TEST button whereas the LEDs are lit performs a battery stage take a look at that turns the LEDs off if the battery is nice. In the event that they keep lit, it is time to recharge the LEDCard.
Facet [MisterHW] signThe LEDCard is compact sufficient to hold with you wherever you go, making it appropriate as an emergency flashlight as effectively. It is also not the final iteration of the design. Future (gradual) enhancements embody a diffuser for the ring gentle and extra. Regardless of this, the LEDCard in its present state is already a confirmed design.
#LEDCard #Pocket #Moveable #Ring #Mild