130 lines
5.6 KiB
Markdown
130 lines
5.6 KiB
Markdown
# Dual magnetic stir controller V2
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## Overview
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This is the Arduino project to build a double magnetic stirrer based on 2 fans, a 1602 LCD display, a KY-040 encoder and an Arduino Nano and a special PCB designed in the Hobbybrauer-Forum.
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<p align="center">
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<img src="https://github.com/micworg/stir/blob/master/images/stir+pcb.jpg" width=700>
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</p>
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V2 supports dual voltage for the fans which increases the speed range.
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In order to put the stirrer into operation you have to change the settings in stir.ino according to your setup (see below).
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The stir V2 software is compatible with V1 hardware if you have used neither the RS232 Api nor the OFF0 and OFF1 relais pins.
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## Part List
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* 1x PCB "Stir V2.0"
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* 1x Arduino Nano V3
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* 1x Voltage regulator TE818 5-24V to 5V 3A step down buck converter
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* 2x Relais Omron G5Q-1-EU 5DC switching printrelais 5 V/DC 5A
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* 2x Diode 1N4148 Diotec
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* 1x Electrolytic capacitor 1000µF/16V Yageo SE016M1000B5S-1015
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* 2x Diode 1N5822 STMicroelectronics Schottky-Diode
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* 4x Metal film resistor 10 KOhm 0,6 W
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* 2x Fan BeQuiet SilentWings 3 120mm PWM Highspeed or Noctua NF-R8 Redux-1800 80mm PWM
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* 1x Power supply 12V-16V DC / 2A
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* 1x Built-in socket for plug-in power supply unit
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* 1x I2C 16x2 Arduino LCD Display Module
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* 1x Rotary encoder KY-040
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* 2x Magnet mount (3D printed)
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* 4x Neodymium magnet 20x10 mm (N52, 1 oder 2 mm dick)
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In addition, a housing is required that can be individually designed according to possibilities and capabilities.
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<p align="center">
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<img src="https://github.com/micworg/stir/blob/master/images/v2_board.jpg" width=350>
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</p>
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## Reference
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This project was created based on an idea from the german Hobbybrauer-Forum and would not be possible without the ideas from there.
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The forum: https://hobbybrauer.de/
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The thread: https://hobbybrauer.de/forum/viewtopic.php?f=21&t=1456
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Special thanks for development and testing:
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* Herbert Schmid
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* Adrian Sigel
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* Jens Warkentin
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* Bastian Werner
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## Overview of Functions
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All functions are controlled by the KY-040 encoder:
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* **Short Press:** change between menu, stirrer 1 and stirrer 2
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* **Turn when menu is selected**: change between menu items (SPEED, BOOST, BTIME, CATCH, CTIME)
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* **Long press when menu is selected**: lock all functions (unlock also by long press)
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* **When a stirrer is selected**:
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* **SPEED**: turn sets speed, long press switches stirrer on or off.
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* **BOOST**: turn sets boost speed, long press activates/deactivates the boost function (running time is shown in the display).
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* **BTIME**: turn changes the boost time in minutes.
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* **CATCH**: turn activates/deactivates the fishing function
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* **CTIME**: turn changes the interval in minutes for the fish catching function
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* **RTIME**: turn changes speed rise time in seconds (applies to power on, stirrer on, boost on and fish catching)
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* **OTIME**: turn changes switch off time in hours (the timer activates immediately, 0 = switch off disabled)
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* **RNVAL**: random value range (a random values in this range will be added to speed)
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* **Other menu options**:
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* **CFG**: Configuration menu
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Functions in the congirutation menu
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* **Short Press**: switch between config option and and value.
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* **Long press**: exit configuration menu.
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* **Turn**: select configuration option or change value.
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## Display Indicators:
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* **Bottom Left**: Menu
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* **Bottom Center/Right**: displays the set values for the stirrers depending on the selected menu item.
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* **Top Center/Right**: displays the current stirrer speed (or 'OFF' or 'CAT' (Fishing)).
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* **Top Left**: shows the remaining time of the boost or switch off function.
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## Settings (in stir.ino)
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|Value|Config Menu Name|Description|
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|:----|:---------------|:----------|
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|`LGHT`|`LGHT`|LCD display brightness|
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|`SPEEDINC1` |`SPI1`|increment of speed values when turning the encoder (1. range)|
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|`SPEEDINC2` |`SPI2`|increment of speed values when turning the encoder (2. range)|
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|`SPEEDINC3` |`SPI3`|increment of speed values when turning the encoder (3. range)|
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|`SPEEDSTEP1`|`SPS1`|speed increment steps (increment changes at these values, separates range 1 and 2)|
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|`SPEEDSTEP2`|`SPS2`|speed increment steps (increment changes at these values, separates range 2 and 3))|
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|`FANMIN` |`FMIN`|fan minimum speed (should be a value at which the fan runs safely) (rpm)|
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|`FANMAX` |`FMAX`|maximum speed of the fan (it is important that this is the real maximum value of the fan)
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(rpm)|
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|`FANINIT` |`FINI`|set fan to hight voltage at boot (3 sec)|
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|`BOFF` |`BOFF`|if set boost off will also turn the normal mode off|
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|`BINC` |`BINC`|boost time increment (min)|
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|`CINC` |`CINC`|catch time increment (min)|
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|`RINC` |`RINC`|rise time increment (sec)|
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|`OINC` |`OINC`|off timer increment (hour)|
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|`RNDINC`|`RINC`|randon value increment (rpm)|
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|`CATCHSTOP`|`CSTP`|stop interval for stir fish catch function (ms)|
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|`PWM0`, `PWM1`||PWM output pins for fan speed|
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|`PWM2`||PWM output pin for LCD brightness control|
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|`I0`, `I1`||interrupts for rpm measurement (2 and 3 for Leonardo and ProMicro / 0 and 1 for Uno)|
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|`SWAPENC`|`SWEN`|switch KY-040 encoder direxction (0/1)|
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|`CLK`, `DT`, `SW`||pins for KY-040 encoder|
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|`R0`, `R0`||voltage select relais pin|
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|`RTHRES`|`RTHR`|voltage switch threshold (rpm)|
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|`RINTERVAL`||regulation interval (ms)|
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|`RDELAY`||extra regulation delay when value changes (ms)|
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|`RTOL`||regulation tolerance (rpm)|
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|`RNDINTERVL`|`RINT`|randon value range change interval (ms)|
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|`SINTERVAL`||speed measurement interval (ms)|
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|`SAVERAGE`||speed measurement average|
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|`SAVETAG`||parameter save identifier|
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|`SAVEDELAY`||delay in seconds before parameter will be saved to EEPROM|
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|`LCDB`||LCD brightness steps (10 values, 0=off, 255=max)|
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