Simple Arduino Soldering Station

LibreCAD

MAX7219 8-Digital Segment Digital LED Display Tube For Arduino

IRF520 MOSFET Driver Module for Arduino

Nano V3.0 ATmega328 For Arduino

JST-XH Right angle Connectors

EasyEDA

Arduino Web Editor

Jumper wires (generic)

MAX6675 Module for Arduino 

Cooling Fan 5V DC Brushless 0.10A 40mm x 40mm x 10mm 2pin Connector Black

Self Locking Electrical Cable Connectors 

Soldering Station Iron Handle for HAKKO 907 ESD

AC 16A/250V 20A/125V Illuminated SPST Boat Rocker Switch

CASE200x120x75mm Plastic Electronic Project Cover Enclosure

Green Round Cap Push Button Switch 

Soldering iron (generic)

<h3 >Overview</h3><figure><img src=https://projects.arduinocontent.cc/60db984f-7dc9-478b-968e-305f01258175.jpg /><figcaption>Controls</figcaption></figure><p >On switching on power, our station in standby mode. It is mean that heater do not  connected and you can see iron handle current temperature on LED display.</p><p >To start working need a long press on button 3 (Mode/ Standby). After this station enters to last working mode stored in EEPROM memory.</p><p >There is two working mode named &#34;CLASS 1&#34; and &#34;CLASS 2&#34;. </p><p >CLASS 1 is temperature control working mode. It is possible to set desired temperature by two buttons 1 and 2 (UP and DOWN). Short press change units for 1 and long press for 5. These values you can change in sketch file:</p><pre ><code ><span >const byte pinHeater = 2;   //pin for irf520 module <br></span><span >const uint16_t minTemp = 50;//temperature minimum <br></span><span >const uint16_t maxTemp = 700;//temperature maximum <br></span><span >const uint16_t measInterval = 500; //measurement interval ms. over 500 <br></span><span >const byte shortPressStep = 1; //temperature step on button's short press <br></span><span >const byte autoPressStep = 5; //temperature step on button's long press <br></span></code></pre><p >On the right half of LED display you can see defined temperature and in the left side real temperature of iron readied by thermocouple K-type.</p><figure><img src=https://projects.arduinocontent.cc/a323be0c-5a3d-4b27-89fb-1a08b8c342c5.jpg /><figcaption>CLASS 1 mode (temperature control)</figcaption></figure><p >CLASS 2. Power control mode. In this mode, you can set power level from 0% to 100%. Controls is same in Class 1 - button 1 (up) and button 2 (down) long and short press. Right half display - desired power level and left side - iron temperature.</p><p >Change working mode by short press on Button 3. Long press on button 3 to standby mode</p><figure><img src=https://projects.arduinocontent.cc/3895ff43-de69-4482-9476-97cb0b11e11c.jpg /><figcaption>Power control mode (CLASS 2)</figcaption></figure><p >If iron handle is unplugged or there is other problem and it is impossible to read data from thermocouple, special symbol shown instead iron temperature both in standby and in working mode</p><figure><img src=https://projects.arduinocontent.cc/9f7999aa-8465-4d67-95dc-7ddd0afe1a0c.jpg /><figcaption>Unplugged handle detection in working mode</figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/2acc7e7a-500d-4668-aac5-714a4892ae31.jpg /><figcaption>Unplugged handle in standby mode</figcaption></figure><h3 >Modules</h3><p >Station have a module structure and almost not discreet components. Only one descrete component is resistor for LED indicator of heating. </p><p >1. Power supply. I use power supply from old fax machine that have +5 and +24 volt out that i need. </p><p >2. Modules. </p><ul ><li >Arduino NANO.  It placed on my own PCB with all needed connectors an headers that i produce by laser transfer technology. However it is possible to use breadboard for this target.  </li></ul><figure><img src=https://projects.arduinocontent.cc/175620a1-b4e5-4c74-8237-2cfeb49f30c6.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/7f3e2ace-bcaf-44a2-8f0f-ad8eee1796dd.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/54f7ae12-c01d-46d8-9b93-03e9d2d88d56.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/12938b79-c686-4b78-a89a-960331b77e2e.jpg /><figcaption>Assembled PCB</figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/0f7429b2-e158-47f9-9ce7-e16b713b45f5.jpg /><figcaption> </figcaption></figure><ul ><li >IRF520 mosfet module for heater control</li></ul><figure><img src=https://projects.arduinocontent.cc/03db94e9-d861-4279-88f4-0be6d69f86cb.jpg /><figcaption>IRF520 module</figcaption></figure><ul ><li >MAX6675 thermocouple K-type driver</li></ul><figure><img src=https://projects.arduinocontent.cc/cd2f13b4-7af1-4db9-b151-d658de9e861b.jpg /><figcaption>max6675 module</figcaption></figure><ul ><li >MAX7219 8 digit module</li></ul><figure><img src=https://projects.arduinocontent.cc/aae5e9b8-9ccf-462a-b94d-8d99c68244d9.jpg /><figcaption> </figcaption></figure><p >That's all that you need!!!!!</p><p >In addition, you need a simple passive element such buttons, connectors, wires and plugs.</p><h3 >Case</h3><figure><img src=https://projects.arduinocontent.cc/1ded50ad-ce5a-4ca3-8ecc-f115813afb19.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/526e0d0d-5197-44dc-957d-14ccbfcda82a.jpg /><figcaption> </figcaption></figure><h3 >Assembling</h3><figure><img src=https://projects.arduinocontent.cc/15d262f2-8d36-4fcb-aa26-0797c078a205.jpg /><figcaption>Main Arduino module</figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/058c630e-2e62-40bf-89d6-5a08e9baec19.jpg /><figcaption>LED display</figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/455d5f94-98b7-4782-a1e3-84f2cc086f2d.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/e8c1d13a-dbf1-4eb5-afb3-fcff590268ae.jpg /><figcaption>Fully assembled </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/736998c1-a46c-430b-9c22-29eabf24f760.jpg /><figcaption> </figcaption></figure><p ></p><figure><img src=https://projects.arduinocontent.cc/f995800c-39e4-46cc-9388-e418799f8c13.jpg /><figcaption>Finished</figcaption></figure><h3 >Result</h3><p ></p><div class="se-component se-video-container __se__float-none" contenteditable="false" style="width: 100%;"><figure style="width: 100%; height: 56.25%; padding-bottom: 56.25%; margin: 0px;"><iframe frameborder="0" allowfullscreen="" src="https://www.youtube.com/embed/4PDWyBL1SvA" data-proportion="true" data-percentage="100%,56.25%" data-size="100%,56.25%" data-align="none" style="width: 100%; height: 100%;" data-index="0" data-file-size="0" data-origin="100%,56.25%"></iframe></figure></div><p ></p><h3 >Sketch</h3><p >Sketch is very simple, not use PID, classes, objects and hard to understanding things. All include libraries you can find over internet and download. Only one special library that I use is &#34;sav_button&#34; library that you can download and find here. It used to control button state. I found it in internet, it written by Alexey Shikharbeev. Thanks. </p>

Enclosure case drawing

Arduino

Easy Soldering Station

sav_button library

Simple Arduino Soldering Station

Simple, easy to assemble, programming and use with block structure, Arduino-based soldering station.