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<title>Drawdio kit - Soldering the kit</title>
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<div class="textblockheader"> <!-- InstanceBeginEditable name="Header" -->Instructions for v1.1<!-- InstanceEndEditable --> </div>
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<p>These
instructions are for the newer v1.1 kit with a thinner PCB and slightly
different components. It makes minor upgrades to the kit which reduce
power usage. If the photos don't match up, you probably have a v1.0 kit
and <a href="http://www.ladyada.net/make/drawdio/solderv10.html">you should follow the instructions here!</a></p>
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<div class="textblockheader"> <!-- InstanceBeginEditable name="Header" -->Lets go!<!-- InstanceEndEditable --> </div>
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<table class="assembly" width="0%">
<tbody><tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/parts.jpg"><img src="parts_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top"><p>Make sure you have all the parts necessary. <a href="http://www.ladyada.net/make/drawdio/parts.html">Check the BOM </a>for a list of everything in the kit.</p>
<p>These
instructions are for the newer v1.1 kit with a thinner PCB and slightly
different components. It makes minor upgrades to the kit which reduce
power usage. If the photos don't match up, you probably have a v1.0 kit
and <a href="http://www.ladyada.net/make/drawdio/solderv10.html">you should follow the instructions here!</a></p></td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/ready.jpg"><img src="ready_t.jpg" height="236" width="500" border="1"></a></td>
<td valign="top"><p>Get ready by placing the PCB in a vise </p>
<p>Heat up your soldering iron to 700deg F, clean the tip and make sure your sponge is wet </p>
<p>Lets go! </p></td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kstaple.jpg"><img src="10kstaple_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kflip.jpg"></a><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kplace.jpg"><img src="10kplace_t.jpg" height="249" width="500" border="1"></a></p></td>
<td valign="top"><p>First thing we will place is <strong>RA</strong>, a 10K resistor (brown, black, orange gold). </p>
<p>Bend the resistor into a staple as shown, and slip it in. </p> </td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kflip.jpg"><img src="10kflip_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top">Place the resistor in the location marked <strong>RA</strong>. Resistors do not have <em>polarity</em>
which means you can put it in 'either way' and it will work just fine.
Bend the wire legs out so that the resistor sits flat against the PCB.<br></td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/10ksolder1.jpg"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/10ksolder1.jpg"></a><a href="http://www.ladyada.net/images/drawdio/v11assembly/10ksolder1.jpg"><img src="10ksolder1_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10ksolder2.jpg"><img src="10ksolder2_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10ksoldered.jpg"><img src="10ksoldered_t.jpg" height="376" width="500" border="1"></a></p> </td>
<td valign="top">Turn
the PCB over. Using your soldering iron tip, press and heat both the
pad (the silver ring around the hole) and lead (wire) at the same time
for 2 or 3 seconds. Then poke the end of the solder in to create a nice
solder joint. Do this for both leads.</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kclip.jpg"><img src="10kclip_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/10kdone.jpg"><img src="10kdone_t.jpg" height="376" width="500" border="1"></a></p> </td>
<td valign="top">Using your diagonal cutters, cut off the long leads just above the solder joint.</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/resplce.jpg"><img src="resplce_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top"><p>Next are the other 3 resistors.</p>
<p>Start with the resistor <strong>RB</strong>.
This resistor has a different value, 300K. The stripes are Orange Black
Yellow Gold. Place that on the left, next to the RB silkscreen.</p>
<p>Then place <strong>R1 </strong>this is a 10<strong> megaohm </strong>resistor!
The stripes ae brown black blue gold. Make sure you do not confuse this
with R2 which is a 10 ohm resistor. Look under a bright light to tell
which one has a blue stripe and which one has a black stripe. If you
not sure, a multimeter will help measure the resistance.</p>
<p>Finally, place <strong>R2</strong> which a 10 ohm resistor. The stripes are brown black black gold. Make sure you do not confuse this with R1 which is a 10 <strong>mega</strong>ohm
resistor. Look under a bright light to tell which one has a blue stripe
and which one has a black stripe. If you not sure, a multimeter will
help measure the resistance.</p>
<p>Check again to make sure
you did not confuse R1 and R2. Really, you need to look under a good
light and a mistake here will be difficult to determine later!</p> </td>
</tr>
<tr>
<td class="imagetd"><p> </p>
<p> </p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/ressolder1.jpg"><img src="ressolder1_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/ressoldered.jpg"><img src="ressoldered_t.jpg" height="376" width="500" border="1"></a></p>
<p> </p></td>
<td valign="top">Once you are positive about R1 and R2, solder in these resistors using the same technique you used for the first resistor.</td>
</tr>
<tr>
<td class="imagetd"><p align="center">(oops forgot to take a photo here!)</p>
<p> </p></td>
<td valign="top">Clip the resistors </td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/capsplace.jpg"><img src="capsplace_t.jpg" height="287" width="500" border="1"></a></td>
<td valign="top"><p>Next are the two ceramic capacitors <strong>C1 </strong>and<strong> C3</strong>.
Ceramic capacitors also have a nice property that they are
symmetric/non-polarized. That means they can go in 'either way'. The
capacitors are different values so make sure to not mix them up. </p>
<p><strong>C3</strong> is a yellow 0.1uF capacitor and has a "104" marking on it. <strong>C1</strong> is the blue 680pF capacitor and has a "682" marking on it. </p>
<p>Place
the capacitors so that the 2 legs (leads) slide thru the two metal
holes in the PCB (pads). The capacitor will sit flat against the PCB. </p> </td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/capsolder.jpg"><img src="capsolder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/capsoldered.jpg"><img src="capsoldered_t.jpg" height="272" width="500" border="1"></a></p></td>
<td valign="top">Solder in the capacitors</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/capclip.jpg"><img src="capclip_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/capclipped.jpg"><img src="capclipped_t.jpg" height="282" width="500" border="1"></a></p></td>
<td valign="top">Clip the leads</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/555place.jpg"><img src="555place_t.jpg" height="337" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/555flip.jpg"><img src="555flip_t.jpg" height="280" width="500" border="1"></a></p></td>
<td valign="top"><p>Next
is the heart of the kit, a low voltage 555 timer chip. This one is
called the TLC551. The important thing to note about the chip is that
it is <em>not</em> symmetric. If it is put in wrong it will not work!
Its also nearly impossible to fix if the chip goes in wrong so make
triple-sure before you solder it in!</p>
<p>The silkscreen on
the PCB has a little notch in the top. That notch indicates where the
top of the chip is. If you look on the chip, there is a circle/dot
imprinted in it on one end. There's also a TI logo at that side. Make
sure the chip is inserted so that the top of the chip lines up with the
silkscreen notch. Check the photo to the left if you're not sure.</p></td>
</tr>
<tr>
<td class="imagetd"><p> </p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/555solder.jpg"><img src="555solder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/555clip.jpg"><img src="555clip_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/555done.jpg"><img src="555done_t.jpg" height="376" width="500" border="1"></a></p> </td>
<td valign="top"><p>Solder
in all 8 pins. You might want to use a piece of tape to hold the chip
in place, or use a spare finger if you are dexterous.</p> </td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/npnplace.jpg"><img src="npnplace_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top"><p>Next is the transistor amplifier <strong>Q1</strong> which is PNP type</p>
<p>Make sure the shape of the transistor matches the silkscreen shape as shown.</p></td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/npnfold.jpg"><img src="npnfold_t.jpg" height="307" width="500" border="1"></a></td>
<td valign="top"> Now bend over the transistor so its 'face flat' against the PCB. </td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/npnflip.jpg"><img src="npnflip_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/npnsolder.jpg"><img src="npnsolder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/npnclip.jpg"><img src="npnclip_t.jpg" height="376" width="500" border="1"></a></p></td>
<td valign="top"><p>Flip over the PCB and solder it in.</p>
<p>Then clip the leads</p></td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/electpol.jpg"><img src="electpol_t.jpg" height="376" width="500" border="1"></a></p> </td>
<td valign="top"><p>Next is the electrolytic capacitors <strong>C2</strong></p>
<p>Electrolytic
capacitors are polarized and must be placed correctly or the circuit
will not work. The longer lead is the positive (+) one and must go into
the pad marked with a + as shown</p></td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/electplace.jpg"><img src="electplace_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top">Fold the capacitor down so that it lies flat against the PCB.</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/electsolder.jpg"><img src="electsolder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/electdone.jpg"><img src="electdone_t.jpg" height="249" width="500" border="1"></a></p></td>
<td valign="top">Solder them in, and clip the leads</td>
</tr>
<tr>
<td class="imagetd"><p align="center"><a href="http://www.ladyada.net/images/arduino/jumpercut.jpg"><img src="jumpercut_t.jpg" height="329" width="500" border="1"></a></p>
<p align="center"><a href="http://www.ladyada.net/images/drawdio/wire.jpg"><img src="wire_t.jpg" height="325" width="500" border="1"></a></p> </td>
<td valign="top"><p>The electronic components are soldered in, next it is time to attach the speaker.</p>
<p>There are <strong>two ways</strong>
to go about it. I will show the easier version first which uses wires
to attach the speaker. Then I will show the 'more elegant' but
difficult version where the speaker is attached directly to the PCB.</p>
<p>Use the diagonal cutters to clip off 2 2-3" pieces of wires</p></td>
</tr>
<tr>
<td class="imagetd"><p align="center"><a href="http://www.ladyada.net/images/arduino/jumpernick.jpg"><img src="jumpernick_t.jpg" height="383" width="500" border="1"></a></p>
<p align="center"><a href="http://www.ladyada.net/images/arduino/jumperstrip.jpg"><img src="jumperstrip_t.jpg" height="367" width="500" border="1"></a></p>
<p align="center"><a href="http://www.ladyada.net/images/arduino/jumper.jpg"><img src="jumper_t.jpg" height="353" width="500" border="1"></a></p>
<p align="center"><a href="http://www.ladyada.net/images/drawdio/wirestripped.jpg"><img src="wirestripped_t.jpg" height="248" width="500" border="1"></a></p></td>
<td valign="top">Next,
nick the insulation 1/4" from the ends of the wire, and pull it off. If
you have 'wire strippers', use them as they are a little easier!</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/wiretin.jpg"><img src="wiretin_t.jpg" height="283" width="500" border="1"></a></td>
<td valign="top">Next,
it is a good idea to tin the ends of the wires. Its a little tricky
because it requires holding three things. However, if you have a 'third
hand tool' or a vise, you can use that to hold the wire while you heat
up the stripped end and coat it with a little bit of solder. This will
make it easier to connect to the speaker.</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/spkrtin.jpg"><img src="spkrtin_t.jpg" height="392" width="500" border="1"></a></td>
<td valign="top">On
the opposite side of the speaker there are two solder tabs. Heat them
up and add a little more solder. Don't spend too much time on them
(more than 3-4 seconds) since the speaker is made of plastic and if it
heats up too much it will melt!</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/spkrwire.jpg"><img src="spkrwire_t.jpg" height="331" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/spkrwired.jpg"><img src="spkrwired_t.jpg" height="606" width="500" border="1"></a></p></td>
<td valign="top">Next,
warm up the tabs and slide the tinned ends of wire into the melted
solder pool. Then remove the iron and wait a few seconds, the solder
pool will cool with the wire in place. Do the same for the other pad</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/spkrplace.jpg"><img src="spkrplace_t.jpg" height="311" width="500" border="1"></a></td>
<td valign="top">Twist
the wires, this will reduce the strain on the solder joints when
bending. Put the end of each wire into the two PCB holea marked SPK+
and SPK-. Don't solder into the hole in the middle which is for the
battery. The speaker is 'symmetric' so it doesnt matter which wire goes
in which hole.</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/spkrsolder.jpg"><img src="spkrsolder_t.jpg" height="350" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/spkrsolder.jpg"><img src="spkrsolder_t.jpg" height="350" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/spkrdone.jpg"><img src="spkrdone_t_002.jpg" height="310" width="500" border="1"></a></p></td>
<td valign="top">Solder the wires into place.</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/spkready.jpg"><img src="spkready_t.jpg" height="266" width="500" border="1"></a></td>
<td valign="top"><p>This is the more challenging way to attach the speaker but is a little more 'elegant' looking</p>
<p>Prepare by finding the two big pads for the speaker</p></td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/spksolder.jpg"><img src="spksolder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/spkblobs.jpg"><img src="spkblobs_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/spkblobs2.jpg"><img src="spkblobs2_t.jpg" height="376" width="500" border="1"></a></p></td>
<td valign="top">Now melt <em>a lot</em> of solder onto the two pads</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/v11assembly/spktaped.jpg"><img src="spktaped_t.jpg" height="376" width="500" border="1"></a></td>
<td valign="top">Tape or otherwise hold the speaker tabs against the blobs</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/spkreflow.jpg"><img src="spkreflow_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/spkrdone.jpg"><img src="spkrdone_t.jpg" height="376" width="500" border="1"></a></p></td>
<td valign="top">Now use the tip of your iron to quickly remelt the blobs so that they flow onto the speaker tabs</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/insertbatt.jpg"><img src="insertbatt_t.jpg" height="290" width="500" border="1"></a></td>
<td valign="top"><p>OK no matter which way you attached the speaker we will move to the next step</p>
<p>Now its time to do a quick test before finishing up. Place a AAA battery in the holder</p></td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/v11assembly/batttest.jpg"><img src="batttest_t.jpg" height="226" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/testing.jpg"><img src="testing_t.jpg" height="376" width="500" border="1"></a></p></td>
<td valign="top"><p>Slide the battery holder into the PCB (<strong>but do not solder it in</strong>).
Make sure that the battery is aligned correctly. Putting in the battery
backwards shouldn't damage the circuit but its still not a good idea so
try to get it right the first time. The back of the PCB has a
silkscreen to help determine which way the battery goes in.</p>
<p>With the battery holder in place (but, again,<strong> not soldered in</strong>)
touch both sides of the PCB. A squeaking noise should come out of the
speaker! As you press harder/softer, the pitch will change. That
indicates the circuit is working. </p>
<p>If its not making noise, try:<br>
1.
Wiggle the battery holder a little to make sure its making contact<br>
2. Check that the switch is turned on<br>
3. Check that the components are correctly placed and soldered well.
Re-touchup the solder points in case you have cold solder joints.</p></td>
</tr>
<tr>
<td class="imagetd"><p> </p>
<p> </p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/battsolder.jpg"><img src="battsolder_t.jpg" height="376" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/v11assembly/battclip.jpg"><img src="battclip_t.jpg" height="376" width="500"></a></p></td>
<td valign="top"><p>Once you are tested and happy, its time to finish up!</p>
<p>Remove
the battery and place the battery holder on top of the components, as
shown. Bend the leads a little so that it sits as tight as possible.</p>
<p>Solder in the battery holder, and clip the leads short.</p> </td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/ziptie.jpg"><img src="ziptie_t.jpg" height="285" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/ziptieclip.jpg"><img src="ziptieclip_t.jpg" height="369" width="500" border="1"></a></p></td>
<td valign="top">Next
you can mount the PCB to your pencil. Place the PCB on the flat side of
a pencil, and thread the zip tie through as shown and tighten it.
You'll want it about an inch or less from the top of the pencil. The
higher it is the more pencil you'll have to sharpen but it may be a
little more unbalanced.</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/tapepeel.jpg"><img src="tapepeel_t.jpg" height="362" width="500" border="1"></a></td>
<td valign="top">Next
cut a 1.5" piece of copper tape using the diagonal cutters. Don't use
scissors as the metal tape can damage them. peel off the paper backing.
The copper tape is conductive, sticky and flexible which makes it
perfect for wrapping the pencil</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/tapetop.jpg"><img src="tapetop_t.jpg" height="372" width="500" border="1"></a></p>
<p><a href="http://www.ladyada.net/images/drawdio/tack.jpg"><img src="tack_t.jpg" height="325" width="500" border="1"></a></p></td>
<td valign="top"><p>Wrap the tape along the top of the pencil so that the beginning is at the silver metal tab on the PCB, as shown</p>
<p>Then
take the thumbtack and gently push it into the end of the pencil. You
might have to twist it back & forth a little to get it all the way
in. The thumbtack will grip the copper tape and also make contact with
the graphite in the middle of the pencil to make the first half of the
drawing sensor</p></td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/tapebottom.jpg"><img src="tapebottom_t.jpg" height="289" width="500" border="1"></a></td>
<td valign="top">Next
take 3 or 4" of copper tape and start wrapping around the bottom of the
pencil, starting with the silver tab on the PCB and ending an inch
before the end of the pencil. This will make contact with your hand and
provide the second half of the sensor.</td>
</tr>
<tr>
<td class="imagetd"><a href="http://www.ladyada.net/images/drawdio/coppersoldered.jpg"><img src="coppersoldered_t.jpg" height="346" width="500" border="1"></a></td>
<td valign="top">Solder the copper tape to the tab directly as shown</td>
</tr>
<tr>
<td class="imagetd"><p><a href="http://www.ladyada.net/images/drawdio/tapetwist.jpg"><img src="tapetwist_t.jpg" height="248" width="500" border="1"></a></p> </td>
<td valign="top"><p>Finally,
insert a battery into the kit. Then grip the pencil with one hand and
touch the point of the pencil to your other hand. You will be able to
hear the drawdio make noise! </p>
<p>Next up, see the user manual for ideas on how to make the most of your drawdio</p></td>
</tr>
</tbody></table>
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