There’s his DIY LED display controlled by an Arduino ... flickerless display. To make both the LED matrix circuit board and the control board, [Joekutz] carved out isolation paths in copper ...

carefully soldering together the LED Menorah kit I had ordered. The plan was to present it to my dad on Monday. We tested the circuit board, saw that all nine bulbs lit up beautifully (in four ...

This expandable LED display for a microcontroller in Figure 1 has ... This characteristic makes the circuit very suitable for DIY designs. In this design, we can solder the Rlim resistors (SMD 0805) ...