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It's long time ago (sorry i was busy) but, still... I add the possibility to use any custom temperature probe by inserting code in specific place marked in the library (more info in doc) Version v3.1 now available Changelog : doc details possibility to insert code for a custom...

Here's a brand new version with the PID auto-tuner RimsTuner, quite usefull for non-experts in process control With this new autotuner feature, a commercial PID (most of them are based on the same theory for the autotuning algorithm btw) no longer has relevant extra features relative to...

Since i did a LOT of testing while coding the auto-tuner, i found some hidden bugs. I felt like i had to release a new update before releasing the auto-tuner Version v2.5 now available : Changelog : mistakes in flash mem doc doc additions temp probe unconnected boolean attribute...

Version v2.4 now available : Changelog : debug : warning message at compiling undefined behavior on array default heater action led is LED_BUILTIN RimsIdent code simplifcation UIRimsIdent reomved and merge with UIRims Countdown is never stopped when SP is NAN Manual model...

Version v2.3 now available : Changelog : lot of doc correction flash mem methods definition seperate cpp file data loggers code simplification new method to init all Rims attributes and IO code clean-up for auto-tuner RimsIdent tested bumps are smarter...

Version v2.2 now available : Changelog : PID output (ssrControl) is now in duty-cycle (0-100%) instead of 0-SSRWINDOWSIZE which is way more standard. PID coefficients will have "normal size" with this change. If you want to keep your current PID calibration you need to multiply all...

Version v2.1 now available : Changelog : Support for RTD reading with an instrument amplifier and cubic fitting Temperature pre-filtering before PID Critical flow simplification Unconnected sensors (temperature or unused flow) is now NaN Flow measurement is hide from the UI if sensor...

My thermistor died last year so I've updgraded my kit for more standard and reliable stuff which is resistance temperature detector (RTD). One major drawback is that it needs some electronic (instrument amplifier) to interface with the Arduino. Having said that, the circuit is quite simple I...

my sketch : #include "SPI.h" #include "LiquidCrystal.h" #include "Rims.h" double currentTemp, ssrControl, settedTemp; LiquidCrystal lcd(8,9,4,5,6,7); UIRims myUI(&lcd,0,10,A2); Rims myRims(&myUI,1,2,&currentTemp,&ssrControl,&settedTemp); void setup() {...

The pin number of SSR and thermistor is specified by you in the constructor of the Rims object. i.e. : Rims myRims(uiRims,analogPinTherm,ssrPin,currentTemp,ssrControl,settedTemp ); For my sketch, I chose (I have a UNO) analog input 1 (A1) for thermistor and and digital output 2 for SSR...

There is a strange bug at the linking of the c++ project. I did some modification in the examples. New version available here

Yeah, no problem. With my very limited budget, I choose to built most of the stuff with recycled material. It's not shinny nor flashy but it works like a charm. MLT : Built with a 250 L food grade plastic barrel. Insulated with aluminum/bubble wrap insulator (I measured about 55 % less energy...

New version available v2.0.2 debug : - verify memConnected before adding brew data

New version available v2.0.1 Debug : - MEM NOT FOUND print on USB access mode if the flash is not found Comments : - pinMode(pinUsedForInterrupt,INPUT_PULLUP) should be called in the setup() function of the main sketch for the interrupt used by the flow sensor (see doc).

New version available v2.0 Added : Winbond W25Q80BV SPI Flash memory for brew data. (see docs) USB menu to access memory data (by holding KEYSELECT at startup)

New version available v1.7.2. Changes : ISR Flow Sensor speed improvement (less CPU time spent in the flow calculation) Alarm if no voltage on heater (useful for breaker and manual swtich -> see docs) Different frequencies for each alarms : (low pitch --- high pitch)...

Yes, my proportional gain is in the 1000s range. My elements is a 1700 W and my 4 PIDs are : // myRims.setTuningPID(Kc,Ki // Kd,Tf, // BatchVol); // ======= Batch 10L ======== myRims.setTuningPID(3210.9,7.8, -61903.2,19.8...

So I had some new interesting idea for my RIMS and i'll find the time to work on it soon : ALARM IF 0 V ON HEATER With a cheap 5V DC power supply I can detect if there is a voltage on the heater. Pretty usefull if my breaker is triggered or if I manually shut it off by an external switch. I...

For 1) : Mash water qty is the water quantity that you used in the process identification (see after) and with the current associated PID (manually calculated by you). It's useful if you brew simple and double beers that need about twice mash water and is twice slower to heat up. In that case...

So I did not post for a while and it's mainly for 2 reasons : University I brewed about 5-6 batches with my RIMS and this library and it works pretty well ! I had scorching problems with my first 2 batches only because I was restricting the flow at 5 L/min. It was not enough for me, i needed a...