Light up Jisc sign
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Inspired by the large floor standing sign in Fetter Lane.
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Updated at source:
Model information
- Source
- Printables
- Category
- Sculptures
- License
- Creative Commons — Attribution — Noncommercial — NoDerivatives
Shopping list
12x 5mm White LED Diode lights, DC 3V 20mA
1x Micro USB to DIP adapter 2.54mm 5pin email connector b
2x 40mm lengths of 30AWG gauge thin electrical wire
Circuit diagram
Method
Using multicolour printer
Print the ‘interface with letters’ model letters down using supports, printing the letters in while and the interface in black. Glue the LEDs in place with the legs aligned to the outside edges of the letters, long legs on one side, short on the other.
Using a single colour printer
Print the front letters in white and the interface in black. Align parts and glue the LEDs in place from behind using them to align the letters to the interface layer, with the legs aligned to the outside edges of the letters, long legs on one side, short on the other.
Wiring
Run the positive wire from the resistor around all the long legs. Run the negative wire from all the short legs back to the negative (GND) terminal on the USB board.
Connect the resistor to the positive (VBUS) terminal on the USB board.
I found it was easier to use long pliers to bend over the LED legs and crimp them to the wire as I ran it around the interface part. Once all the LEDs were connected I the act of soldering the connections burnt off the wires insulation to make a good electrical connection.
Tip. If you start with the USB connector, attach the resistor and then the wires, you can connect it to power and as you solder each LED it should light up allowing you to check they are connected right as you go.
Assembly
Just push the back over the interface, no glue needed.