#Hot air reflow station install#
#Hot air reflow station pro#

You have to install the Commoncontrols-master library and time-master library for the code to work properly. Note: If you are using PCB from easyEDA then you should change the pin number of reed switch to pin no. The setup mode has Calibrate, Tune, Save and Cancel and Reset Config options. When the hot air gun is off, the controller will enter Setup mode if the encoder is long pressed. After the temperature falls below 50 C it will make a short beep and displays COLD. But, the fan will continue to blow until it reaches the safe temperature. It will turn off heating as soon as it is put back into the holder. The Hot air gun starts heating as soon as it is lifted up from the holder and shows Ready and make a short beep when it reaches the set temperature. Short press of the encoder will switch between the Fan speed and Set temperature adjustment. By rotating the encoder the temperature and fan speed can be adjusted. When the controller is turned on the wand will be in OFF state. It works by controlling the number of wave cycles delivered to the handle per second. The program uses PID algorithm to control the power to maintain the set temperature. The program is the most crucial part of the project and thanks a lot for sfrwmaker writing the program. The 4N25 optocoupler helps to maintain the sync with the AC waveform. It consists of a TRIAC driven by a opto-coupled DIAC and it is done by controlling the number of wave cycles that is delivered to the heater. The other one is a isolated controller for heater. The one is a simple PWM Fan speed controller with a MOSFET. There are mainly 2 controllers in this circuit. The gain of the op-amp is controlled by 200K trim pot. The thermocouple's voltage is amplified by the op-amp to a voltage level measurable by the arduino. It consists of a K-type thermocouple for temperature sensing and a reed switch for determining the position of the handle. The encoder is used for various inputs and to navigate through the options and controls. The display shows the set temperature, current temperature, Fan speed and applied power and current status of the handle. It consists of a 1602 LCD display with I2C module and a rotary encoder with push button. So, refer to the wiring diagram in the photo and follow the path of the wire to find the respective pins. The wiring of the hot air gun handle may be different for different type of wands. +NC(Not Connected, code uses inbuilt input pull-up of arduino) The pins A4 to A2 and A5 to A3 should be shorted as in the picture. Since, the I2C pins of arduino A4 and A5 are not PCB friendly.

#Hot air reflow station pro#

The following modification should be made to the arduino pro mini to use it. Here is the part list and link from where you can order them.