RIMS Arduino Library

Any 5V DC power supply

Arduino UNO

Windbond W25Q80BV - 1 MByte SPI Flash

Any old PC speaker (or buzzer)

LCD Keypad Shield For Arduino

Hall effect flow sensor

Arduino IDE

Temperature probe : any PT-100 RTD

<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/BcqXruYyhZ8" 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><figcaption contenteditable="true"><div>rims-arduino-library demo</div></figcaption></figure></div><p ><span >This library implement RIMS controls for home brewers. For definition of a RIMS, see </span><a href="http://www.hbd.org/kroyster/definition.html">What is a RIMS? </a></p><p >For me, an Arduino micro controller + a LCD Keypad shield was cheaper and a lot more customizable than a commercial PID controller. So, with this library, a commercial PID controller is unnecessary. Automatic PID tuning toolkit is also included. Temperature can be read with a thermistor, a resistance temperature detector (RTD) or any custom temperature probe. Heater is controlled with pulse-width modulation (PWM) of a solid-state relay (SSR).</p><p ><a href="https://sourceforge.net/projects/rims-arduino-library/">rims-arduino-library Web Site </a></p><p ><a href="https://sourceforge.net/directory/license:gplv3">GNU General Public License version 3.0 (GPLv3)</a></p><div id="gallery"><img id="gallery" src=https://projects.arduinocontent.cc/b16b13a4-ad64-4b73-a15a-54f0a2bdb52c.png /><figcaption>User Interface : temperatures screen</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/6199996e-8662-4f2f-ab76-aa1ca19243d4.png /><figcaption>User Interface : timer and flow screen</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/8e052048-f7ad-45d5-8b62-65fcc755495d.png /><figcaption>User Interface : identification screen</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/caa0cd4f-7eda-40a1-85c8-5511da9866bd.png /><figcaption>User Interface : choosing time</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/f1bae300-b769-410b-9e37-6553fb5f569d.png /><figcaption>User Interface : choosing temperature setpoint</figcaption></div><ul ><li >User interface made with DFRobot LCD Keypad Shield for Arduino or similar (can be customized)</li></ul><ul ><li >Heater action : solid-state relay (SSR) time proportioning control (or pulse width modulation, PWM), LED duty-cycle indicator</li></ul><ul ><li >Temperature sensor : RTD reading with an instrument amplifier and cubic fitting, thermistor reading with voltage divider, custom temperature probe support, measurement pre-filtering before PID</li></ul><ul ><li >PID temperature regulation enhanced : derivative filter, smart integration clamping anti-windup, multiple controller (up to 4, optional) for different mash water quantities</li></ul><ul ><li >Automatic PID tuning : Autotuner based on relay identification, Fourier analysis and Ziegler-Nichols methods</li></ul><ul ><li >Manual PID tuning : Process model identification tools</li></ul><ul ><li >Tripped breaker detection on heater : any 5V DC power-supply</li></ul><ul ><li >Countdown timer that is activated only when temperature setpoint is reached</li></ul><ul ><li >Data logger : simple serial communication (usb port), SPI flash memory (Winbond 1 Mbytes), USB Menu to access brew data on SPI flash memory (by holding &lt;OK&gt; at startup)</li></ul><ul ><li >Hall effect flow sensor : turn off heater if flow is critically low,</li></ul><ul ><li >Alarm with external speaker : bad flow\\disconnected temperature probe errors, timer is elapsed, no voltage on heater, different frequencies for each alarms (alarm distinction)</li></ul><p ><a href="https://sourceforge.net/projects/rims-arduino-library/">https://sourceforge.net/projects/rims-arduino-library/</a></p>

Link to SourceForge repo

RIMS Arduino Library

Re-circulation infusion mash system library for Arduino.