Your Smart IOT

<p>The is the last part of our series on how to make a Stevenson screen with Arduino. We’ve completed the basic assembly. Now, all that’s left to do is to make the outside look cool. This time, I’ll create a case, and I’ll try my hand at soldering.</p>
<p>*Those who don’t wish to solder can keep their circuit on the breadboard and make a case around that.</p>
<h2>Today’s Electronics Recipe</h2>
<p><strong>Estimated time to complete: 120 minutes</strong></p>
<p><strong>Parts needed:</strong></p>
<ul>
<li>Arduino (Arduino Uno R3) <a href="http://ift.tt/19qjkOK" target="_blank">http://ift.tt/19qjkOK</a></li>
<li>Breadboard <a href="http://ift.tt/1z7Tzip" target="_blank">http://ift.tt/1z7Tzip</a></li>
<li>3-digit 7-segment LED <a href="http://ift.tt/1NwklmY" target="_blank">http://ift.tt/1NwklmY</a></li>
<li>Humidity sensor (TDK CHS-UGR) <a href="http://ift.tt/1S47zl6" target="_blank">http://ift.tt/1S47zl6</a></li>
<li>Humidity sensor (LM35DZ) <a href="http://ift.tt/1Nwkln2" target="_blank">http://ift.tt/1Nwkln2</a></li>
<li>AC adapter <a href="http://ift.tt/1S47zlc" target="_blank">http://ift.tt/1S47zlc</a></li>
<li>9V battery snap <a href="http://ift.tt/1Nwklna" target="_blank">http://ift.tt/1Nwklna</a></li>
<li>9V battery</li>
<li>Nanoblocks (basic set) <a href="http://ift.tt/1S47y0I" target="_blank">http://ift.tt/1S47y0I</a></li>
<li>Soldering iron</li>
<li>Solder</li>
<li>Soldering iron stand</li>
<li>Arduino universal circuit board (UB-ARDO3)</li>
<li>Header pin <a href="http://ift.tt/1hjGWVq" target="_blank">http://ift.tt/1hjGWVq</a></li>
</ul>
<h2>Thinking About What Kind of Case We Can Make</h2>
<p>When I came to make my Arduino case, I checked what kind of methods were out there. When I did a quick Internet search for “Arduino case” I found many different sort of cases. Some people use plastic cases from one dollar shop, others design their own professional cases through 3D printing or processing acrylics, yet others use candy tins to make their cases. Everyone creates their own case in their individual way.</p>
<p>After researching various ways to make a case, I took inspiration from the <a href="http://ift.tt/1S47zlg" target="_blank">nanoblock case made in the Raspberry Pi Beginner’s Guide by a Geek Girl series</a>, and decided to make my Stevenson screen case from nanoblocks too!</p>
<p><img alt="Nanoblock" class="alignnone size-full wp-image-643" height="394" src="http://ift.tt/1NwkneI" width="700" /></p>
<p>Nanoblocks are incredibly small. In fact, at only 4x4mm, they are the smallest blocks in the world. This means they should be pretty versatile for making a case, and if I don’t like what I’ve made I can simply take it apart and rebuild it. So this time, I’m going to try making my case with nanoblocks.<br />
To make the case, I’m using a nanoblock basic set that contains a lot of basic blocks.</p>
<h2>Starting Building the Case</h2>
<p>Okay, time to start building the case. I say “building”, but really I’m just choosing blocks as I wish and enclosing the Arduino.</p>
<p><img alt="Arduino Stevenson Screen Case" class="alignnone size-full wp-image-644" height="394" src="http://ift.tt/1S47y0K" width="700" /></p>
<p>I enclose the Arduino in nanoblocks.</p>
<p>When an Arduino is in use for long periods of time, it is highly likely to heat up due to the circuit. Therefore, it is important to create a case that has ventilation to ensure the Arduino will be okay even if it heats up.</p>
<p><img alt="Arduino Stevenson Screen Case" class="alignnone size-full wp-image-645" height="394" src="http://ift.tt/1NwkneM" width="700" /></p>
<p>I’ve made gaps for ventilation on the sides, so the Arduino will be okay if it heats up.</p>
<h2>Making the Stevenson Screen Electric Circuit into an Arduino Shield</h2>
<p>As we’re making a case, I will try soldering the circuit we made previously to an Arduino universal board, as a shield for the Arduino, so that it can be easily dismantled. With this, the circuit we previously mounted to a breadboard will be more compact!</p>
<p>(Of course, if you don’t have a soldering iron, or if it seems too difficult, you can just keep the circuit mounted on the breadboard and build a case around that.)</p>
<p><img alt="Universal Circuit Board" class="alignnone wp-image-646 size-full" height="394" src="http://ift.tt/1S47zli" width="700" /></p>
<p>My Arduino universal circuit board. It fits just nicely on top of my Arduino.</p>
<p><img alt="Universal Circuit Board and Arduino" class="alignnone size-full wp-image-647" height="394" src="http://ift.tt/1NwkneO" width="700" /></p>
<p>Here it is next to my Arduino.</p>
<h2>Placing the parts on the universal circuit board</h2>
<p>Taking into consideration all the different parts I’d need to attach to the circuit board, I decided on where everything would go and set about wiring and soldering.<br />
This time I used a 3-digit 7-segment LED display.</p>
<p>*You can download the data sheet for the 3-digit 7-segment LED I used from this page <a href="http://ift.tt/1S47yh0" target="_blank">http://ift.tt/1S47yh0</a></p>
<p><img alt="Circuit board with humidity sensor and 7seg LED" class="alignnone size-full wp-image-648" height="394" src="http://ift.tt/1NwklDw" width="700" /></p>
<p>I think about where the parts will go.</p>
<p><img alt="Arduino Case Parts" class="alignnone size-full wp-image-649" height="394" src="http://ift.tt/1S47zBy" width="700" /></p>
<p>If you want to connect it with Arduino, you can use these kind of header pin.</p>
<p><img alt="Arduino with the universal circuit in the case" class="alignnone size-full wp-image-650" height="394" src="http://ift.tt/1NwklDA" width="700" /></p>
<p>I put the universal circuit board on the top of the Arduino.</p>
<h2>Try Soldering</h2>
<p>Before soldering the components to the circuit board, I tested my circuit and program to make sure they worked (and to test out the breadboard.) Once you’ve soldered all the parts it takes a lot of effort to correct the circuitry if you make a mistake. So from here on in I preceded with a lot of care.</p>
<p><img alt="Arduino soldering" class="alignnone size-full wp-image-651" height="394" src="http://ift.tt/1S47zBC" width="700" /></p>
<p><img alt="Arduino soldering" class="alignnone size-full wp-image-652" height="394" src="http://ift.tt/1NwkneQ" width="700" /></p>
<p>I assembled the circuit on the breadboard and checked it again to make sure it was running properly.</p>
<p>It ran on the breadboard without any issues. So, it was finally time to solder it to the circuit board. If you search online for “soldering” or “soldering hints”, you can find detailed instructions. It would pay to have a look at these before you begin.</p>
<p><img alt="Arduino soldering" class="alignnone size-full wp-image-653" height="394" src="http://ift.tt/1S47zBE" width="700" /></p>
<p>The preparation is complete; it’s soldering time!</p>
<p><img alt="Arduino soldering" class="alignnone size-full wp-image-654" height="394" src="http://ift.tt/1NwklDE" width="700" /></p>
<p>Laboring over the wiring, I managed to complete the soldering.</p>
<p>I didn’t place the parts in very good positions, so the wiring on the back of the circuit board is a bit messy. But nevertheless, it’s complete so I’ll attach it to the Arduino.</p>
<p><img alt="Arduino universal circuit board humidity sensor 7seg LED" class="alignnone size-full wp-image-655" height="437" src="http://ift.tt/1S47zBI" width="700" /></p>
<p>I attatched it to the Arduino.</p>
<h2>Let’s complete it!</h2>
<p>Once you’ve finished soldering, you can now complete the case. But saying that, all that’s left is to assemble the blocks! Because the nanoblocks are tiny you can make intricate adjustments, but their small size also means that it takes a while to build a case with them.</p>
<p>I steadily piled the nanoblocks up… and the case is finally completed!</p>
<p><img alt="Arduino stevenson screen" class="alignnone size-full wp-image-656" height="394" src="http://ift.tt/1NwklDG" width="700" /></p>
<p>My Stevenson screen is complete!</p>
<p>Up until now, the circuit board was always uncovered so I’m excited that the case is complete now!</p>
<p><img alt="Arduino stevenson screen" class="alignnone size-full wp-image-657" height="394" src="http://ift.tt/1S47zBK" width="700" /></p>
<p>The uncovered version from last time.</p>
<p>Because the case is complete, I’ll upload a program right away. Because this time, I’m using a 3-digit 7-segment LED, I’ll have to modify a little the program  we made.</p>
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<div class="line number1 index0 alt2"><code class="cpp comments">//</code></div>
<div class="line number2 index1 alt1"><code class="cpp comments">// Stevenson screen program</code></div>
<div class="line number3 index2 alt2"><code class="cpp comments">//</code></div>
<div class="line number4 index3 alt1"><code class="cpp preprocessor">#include <avr/sleep.h></code></div>
<div class="line number5 index4 alt2"><code class="cpp color1 bold">int</code> <code class="cpp plain">_cnt = 0;</code></div>
<div class="line number6 index5 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">_number = 0;</code></div>
<div class="line number7 index6 alt2"><code class="cpp color1 bold">int</code> <code class="cpp plain">_viewFlg = 0;</code> <code class="cpp comments">// Flag to change the digit</code></div>
<div class="line number8 index7 alt1"><code class="cpp plain">boolean _switchFlg =</code> <code class="cpp keyword bold">false</code><code class="cpp plain">;</code> <code class="cpp comments">//Flag to change the temperature and humidity</code></div>
<div class="line number9 index8 alt2"><code class="cpp color1 bold">int</code> <code class="cpp plain">temperaturePin = A0;</code> <code class="cpp comments">// select the input pin for the potentiometer</code></div>
<div class="line number10 index9 alt1"><code class="cpp color1 bold">int</code> <code class="cpp plain">humidityPin = A1;</code> <code class="cpp comments">// select the input pin for the potentiometer</code></div>
<div class="line number11 index10 alt2"><code class="cpp color1 bold">float</code> <code class="cpp plain">temperatureValue = 0;</code> <code class="cpp comments">// variable to store the value coming from the sensor</code></div>
<div class="line number12 index11 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">humidityValue = 1;</code> <code class="cpp comments">// variable to store the value coming from the sensor</code></div>
<div class="line number13 index12 alt2"><code class="cpp keyword bold">void</code> <code class="cpp plain">setup(){</code></div>
<div class="line number14 index13 alt1"><code class="cpp plain">Serial.begin(9600);</code></div>
<div class="line number15 index14 alt2"><code class="cpp comments">//pin numbers 2～8　set to digital output</code></div>
<div class="line number16 index15 alt1"><code class="cpp keyword bold">for</code> <code class="cpp plain">(</code><code class="cpp color1 bold">int</code> <code class="cpp plain">i=2; i<=8; i++){</code></div>
<div class="line number17 index16 alt2"><code class="cpp plain">pinMode(i,OUTPUT);</code></div>
<div class="line number18 index17 alt1"><code class="cpp plain">}</code></div>
<div class="line number19 index18 alt2"><code class="cpp plain">pinMode(9,OUTPUT);</code> <code class="cpp comments">//dot</code></div>
<div class="line number20 index19 alt1"><code class="cpp plain">pinMode(11,OUTPUT);</code> <code class="cpp comments">//1st digit</code></div>
<div class="line number21 index20 alt2"><code class="cpp plain">pinMode(12,OUTPUT);</code> <code class="cpp comments">//2nd digit</code></div>
<div class="line number22 index21 alt1"><code class="cpp plain">pinMode(13,OUTPUT);</code> <code class="cpp comments">//3rd digit</code></div>
<div class="line number23 index22 alt2"><code class="cpp plain">}</code></div>
<div class="line number24 index23 alt1"><code class="cpp comments">//define the LED layout</code></div>
<div class="line number25 index24 alt2"><code class="cpp plain">boolean Num_Array[10][7]={</code></div>
<div class="line number26 index25 alt1"><code class="cpp plain">{1,1,1,1,1,1,0},</code> <code class="cpp comments">//0</code></div>
<div class="line number27 index26 alt2"><code class="cpp plain">{0,1,1,0,0,0,0},</code> <code class="cpp comments">//1</code></div>
<div class="line number28 index27 alt1"><code class="cpp plain">{1,1,0,1,1,0,1},</code> <code class="cpp comments">//2</code></div>
<div class="line number29 index28 alt2"><code class="cpp plain">{1,1,1,1,0,0,1},</code> <code class="cpp comments">//3</code></div>
<div class="line number30 index29 alt1"><code class="cpp plain">{0,1,1,0,0,1,1},</code> <code class="cpp comments">//4</code></div>
<div class="line number31 index30 alt2"><code class="cpp plain">{1,0,1,1,0,1,1},</code> <code class="cpp comments">//5</code></div>
<div class="line number32 index31 alt1"><code class="cpp plain">{1,0,1,1,1,1,1},</code> <code class="cpp comments">//6</code></div>
<div class="line number33 index32 alt2"><code class="cpp plain">{1,1,1,0,0,1,0},</code> <code class="cpp comments">//7</code></div>
<div class="line number34 index33 alt1"><code class="cpp plain">{1,1,1,1,1,1,1},</code> <code class="cpp comments">//8</code></div>
<div class="line number35 index34 alt2"><code class="cpp plain">{1,1,1,1,0,1,1}</code> <code class="cpp comments">//9</code></div>
<div class="line number36 index35 alt1"><code class="cpp plain">};</code></div>
<div class="line number37 index36 alt2"><code class="cpp comments">//Define the LED display function</code></div>
<div class="line number38 index37 alt1"><code class="cpp keyword bold">void</code> <code class="cpp plain">NumPrint(</code><code class="cpp color1 bold">int</code> <code class="cpp plain">Number){</code></div>
<div class="line number39 index38 alt2"><code class="cpp keyword bold">for</code> <code class="cpp plain">(</code><code class="cpp color1 bold">int</code> <code class="cpp plain">w=0; w<=7; w++){</code></div>
<div class="line number40 index39 alt1"><code class="cpp plain">digitalWrite(w+2,-Num_Array[Number][w]);</code></div>
<div class="line number41 index40 alt2"><code class="cpp plain">}</code></div>
<div class="line number42 index41 alt1"><code class="cpp plain">}</code></div>
<div class="line number43 index42 alt2"><code class="cpp comments">//Breakdown each digit into individual digits.</code></div>
<div class="line number44 index43 alt1"><code class="cpp color1 bold">int</code> <code class="cpp plain">NumParse(</code><code class="cpp color1 bold">float</code> <code class="cpp plain">Number,</code><code class="cpp color1 bold">int</code> <code class="cpp plain">s){</code></div>
<div class="line number45 index44 alt2"><code class="cpp plain">Serial.print(</code><code class="cpp string">"number:"</code><code class="cpp plain">);</code></div>
<div class="line number46 index45 alt1"><code class="cpp plain">Serial.println(Number);</code></div>
<div class="line number47 index46 alt2"><code class="cpp keyword bold">if</code><code class="cpp plain">(s == 1){</code></div>
<div class="line number48 index47 alt1"><code class="cpp keyword bold">return</code> <code class="cpp color1 bold">int</code><code class="cpp plain">(Number) % 10;</code></div>
<div class="line number49 index48 alt2"><code class="cpp plain">}</code></div>
<div class="line number50 index49 alt1"><code class="cpp keyword bold">else</code> <code class="cpp keyword bold">if</code><code class="cpp plain">(s == 2){</code></div>
<div class="line number51 index50 alt2"><code class="cpp keyword bold">return</code> <code class="cpp color1 bold">int</code><code class="cpp plain">(Number / 10);</code></div>
<div class="line number52 index51 alt1"><code class="cpp plain">}</code></div>
<div class="line number53 index52 alt2"><code class="cpp comments">//Discriminate minuses by after the decimal point.</code></div>
<div class="line number54 index53 alt1"><code class="cpp keyword bold">else</code> <code class="cpp keyword bold">if</code><code class="cpp plain">(s == -1){</code></div>
<div class="line number55 index54 alt2"><code class="cpp keyword bold">return</code> <code class="cpp color1 bold">int</code><code class="cpp plain">((Number -</code><code class="cpp color1 bold">int</code><code class="cpp plain">(Number))*10);</code></div>
<div class="line number56 index55 alt1"><code class="cpp plain">}</code></div>
<div class="line number57 index56 alt2"><code class="cpp keyword bold">return</code> <code class="cpp plain">0;</code></div>
<div class="line number58 index57 alt1"><code class="cpp plain">}</code></div>
<div class="line number59 index58 alt2"><code class="cpp keyword bold">void</code> <code class="cpp plain">loop(){</code></div>
<div class="line number60 index59 alt1"><code class="cpp keyword bold">if</code><code class="cpp plain">(_viewFlg == 0){</code></div>
<div class="line number61 index60 alt2"><code class="cpp plain">digitalWrite(11,HIGH);</code></div>
<div class="line number62 index61 alt1"><code class="cpp plain">digitalWrite(12,HIGH);</code></div>
<div class="line number63 index62 alt2"><code class="cpp plain">digitalWrite(13,LOW);</code></div>
<div class="line number64 index63 alt1"><code class="cpp plain">NumPrint(NumParse(_number,2));</code></div>
<div class="line number65 index64 alt2"><code class="cpp comments">//Switch off the dots</code></div>
<div class="line number66 index65 alt1"><code class="cpp plain">digitalWrite(9,LOW);</code></div>
<div class="line number67 index66 alt2"><code class="cpp plain">}</code></div>
<div class="line number68 index67 alt1"><code class="cpp keyword bold">else</code> <code class="cpp keyword bold">if</code><code class="cpp plain">(_viewFlg == 1){</code></div>
<div class="line number69 index68 alt2"><code class="cpp plain">digitalWrite(11,LOW);</code></div>
<div class="line number70 index69 alt1"><code class="cpp plain">digitalWrite(12,HIGH);</code></div>
<div class="line number71 index70 alt2"><code class="cpp plain">digitalWrite(13,HIGH);</code></div>
<div class="line number72 index71 alt1"><code class="cpp plain">NumPrint(NumParse(_number,1));</code></div>
<div class="line number73 index72 alt2"><code class="cpp comments">//Display the dots</code></div>
<div class="line number74 index73 alt1"><code class="cpp plain">digitalWrite(9,HIGH);</code></div>
<div class="line number75 index74 alt2"><code class="cpp plain">}</code> <code class="cpp keyword bold">else</code> <code class="cpp keyword bold">if</code><code class="cpp plain">(_viewFlg == 2){</code></div>
<div class="line number76 index75 alt1"><code class="cpp plain">digitalWrite(11,HIGH);</code></div>
<div class="line number77 index76 alt2"><code class="cpp plain">digitalWrite(12,LOW);</code></div>
<div class="line number78 index77 alt1"><code class="cpp plain">digitalWrite(13,HIGH);</code></div>
<div class="line number79 index78 alt2"><code class="cpp plain">NumPrint(NumParse(_number,-1));</code></div>
<div class="line number80 index79 alt1"><code class="cpp comments">//Switch off the dots</code></div>
<div class="line number81 index80 alt2"><code class="cpp plain">digitalWrite(9,LOW);</code></div>
<div class="line number82 index81 alt1"><code class="cpp plain">}</code></div>
<div class="line number83 index82 alt2"><code class="cpp plain">_viewFlg++;</code></div>
<div class="line number84 index83 alt1"><code class="cpp keyword bold">if</code><code class="cpp plain">(_viewFlg == 3){</code></div>
<div class="line number85 index84 alt2"><code class="cpp plain">_viewFlg = 0;</code></div>
<div class="line number86 index85 alt1"><code class="cpp plain">}</code></div>
<div class="line number87 index86 alt2"><code class="cpp keyword bold">if</code><code class="cpp plain">(_cnt &>= 300){ </code></div>
<div class="line number88 index87 alt1"><code class="cpp plain">_cnt = 0;</code></div>
<div class="line number89 index88 alt2"><code class="cpp plain">Serial.print(</code><code class="cpp string">"NUMBER:"</code><code class="cpp plain">);</code></div>
<div class="line number90 index89 alt1"><code class="cpp plain">Serial.println(_number);</code></div>
<div class="line number91 index90 alt2"><code class="cpp keyword bold">if</code><code class="cpp plain">(_switchFlg ==</code> <code class="cpp keyword bold">true</code><code class="cpp plain">){</code></div>
<div class="line number92 index91 alt1"><code class="cpp plain">temperatureValue = analogRead(temperaturePin);</code></div>
<div class="line number93 index92 alt2"><code class="cpp plain">_number = toTemperature(temperatureValue);</code></div>
<div class="line number94 index93 alt1"><code class="cpp plain">Serial.print(</code><code class="cpp string">"temperature:"</code><code class="cpp plain">);</code></div>
<div class="line number95 index94 alt2"><code class="cpp plain">Serial.println(_number);</code></div>
<div class="line number96 index95 alt1"><code class="cpp plain">_switchFlg =</code> <code class="cpp keyword bold">false</code><code class="cpp plain">;</code></div>
<div class="line number97 index96 alt2"><code class="cpp plain">}</code></div>
<div class="line number98 index97 alt1"><code class="cpp keyword bold">else</code><code class="cpp plain">{</code></div>
<div class="line number99 index98 alt2"><code class="cpp plain">humidityValue = analogRead(humidityPin);</code></div>
<div class="line number100 index99 alt1"><code class="cpp plain">_number = toHumidity(humidityValue);</code></div>
<div class="line number101 index100 alt2"><code class="cpp plain">Serial.print(</code><code class="cpp string">"humidity:"</code><code class="cpp plain">);</code></div>
<div class="line number102 index101 alt1"><code class="cpp plain">Serial.println(_number);</code></div>
<div class="line number103 index102 alt2"><code class="cpp plain">_switchFlg =</code> <code class="cpp keyword bold">true</code><code class="cpp plain">;</code></div>
<div class="line number104 index103 alt1"><code class="cpp plain">}</code></div>
<div class="line number105 index104 alt2"><code class="cpp plain">}</code></div>
<div class="line number106 index105 alt1"><code class="cpp plain">_cnt++;</code></div>
<div class="line number107 index106 alt2"><code class="cpp plain">delay(20);</code></div>
<div class="line number108 index107 alt1"><code class="cpp plain">}</code></div>
<div class="line number109 index108 alt2"><code class="cpp comments">//Change the analog input values to degrees Celsius</code></div>
<div class="line number110 index109 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">toTemperature(</code><code class="cpp color1 bold">int</code> <code class="cpp plain">analog_val){</code></div>
<div class="line number111 index110 alt2"><code class="cpp color1 bold">float</code> <code class="cpp plain">v = 5;</code> <code class="cpp comments">// Reference voltage level( V )</code></div>
<div class="line number112 index111 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">tempC = ((v * analog_val) / 1024) * 100;</code></div>
<div class="line number113 index112 alt2"><code class="cpp keyword bold">return</code> <code class="cpp plain">tempC;</code></div>
<div class="line number114 index113 alt1"><code class="cpp plain">}</code></div>
<div class="line number115 index114 alt2"><code class="cpp comments">//Change analog input values to humidity</code></div>
<div class="line number116 index115 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">toHumidity(</code><code class="cpp color1 bold">int</code> <code class="cpp plain">analog_val){</code></div>
<div class="line number117 index116 alt2"><code class="cpp color1 bold">float</code> <code class="cpp plain">v = 5;</code> <code class="cpp comments">// Reference voltage( V )</code></div>
<div class="line number118 index117 alt1"><code class="cpp color1 bold">float</code> <code class="cpp plain">tempC = (analog_val / (1024/v)) * 100;</code></div>
<div class="line number119 index118 alt2"><code class="cpp keyword bold">return</code> <code class="cpp plain">tempC;</code></div>
<div class="line number120 index119 alt1"><code class="cpp plain">}</code></div>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<p>*Based on the data sheet I modified the program on a three digit display because the program handles decimal points.</p>
<p><iframe width="678" height="381" src="https://www.youtube.com/embed/oVSabqWrYqk?feature=oembed" frameborder="0" allowfullscreen=""></iframe></p>
<p> </p>
<p>You can power the Arduino with an AC adapter, or create a battery box. Then, put it next to your desk or on a windowsill and “install” your newly completed Stevenson screen into your daily life!</p>
<p>In the next article, I want to use my electric kit to work with something all men love – motors!</p>
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Make a Stevenson Screen with Arduino Part 4 – Project Completion with Case Building and Soldering

The is the last part of our series on how to make a Stevenson screen with Arduino. We’ve completed the basic assembly. Now, all that’s left ...

Make a Stevenson Screen with Arduino Part 4 – Project Completion with Case Building and Soldering

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