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Step 6Building the display
This will be easier to follow if you look directly on the pictures instead. All text below is in the image notes too.
1. put the LEDs on a piece of perf-board. Remember that LEDs has polarty (long lead should be connected to positive, short lead to ground (negative)), so put all the LEDs the same way to make it easier later.
2. Bend all short leads towards the middle.
3. Take a piece of wire and strip off the insulation a couple of centimeters, fasten it in the perfboard and put it over the short leads. This wire will later be connected to the arduino so don't make it to short.
4. Solder the short leads to the perfboard and to the wire. Clip off the short leads.
5. add the 11 1kΩ resistors. One of the leads of each resistor should be next to the long leg of a LED.
6. Solder the resistors to the long leads of the LEDs and clip off the excess leads.
7. Attatch wires to the perfboard next to each of the unsoldered resistor leads, and solder them togheter. these wires will be attatched to the arduinos pins.
8. Bind the the wires togheter with cable ties, tape or by wrapping wirepieces around the wires.
I used tape to keep the wires togheter. It's not ideal for getting a good connection to put the wires directly in to the arduino, but it worked ok for me. If you have a row of headerpins, solder the wires to that and use it instead.
1. put the LEDs on a piece of perf-board. Remember that LEDs has polarty (long lead should be connected to positive, short lead to ground (negative)), so put all the LEDs the same way to make it easier later.
2. Bend all short leads towards the middle.
3. Take a piece of wire and strip off the insulation a couple of centimeters, fasten it in the perfboard and put it over the short leads. This wire will later be connected to the arduino so don't make it to short.
4. Solder the short leads to the perfboard and to the wire. Clip off the short leads.
5. add the 11 1kΩ resistors. One of the leads of each resistor should be next to the long leg of a LED.
6. Solder the resistors to the long leads of the LEDs and clip off the excess leads.
7. Attatch wires to the perfboard next to each of the unsoldered resistor leads, and solder them togheter. these wires will be attatched to the arduinos pins.
8. Bind the the wires togheter with cable ties, tape or by wrapping wirepieces around the wires.
I used tape to keep the wires togheter. It's not ideal for getting a good connection to put the wires directly in to the arduino, but it worked ok for me. If you have a row of headerpins, solder the wires to that and use it instead.
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