PAGE 3 of 5 - The Controller
The controller is based on the Avr ATMEGA8 and varies the time that the soldering iron is power on every cycle, the period of each cycle is 1sec
the output is calculated with the following equation
SetPoint is the selected temperature
Tip is the temperature of the soldering iron
On each Cycle:
Error = SetPoint - Tip
Total_Error = Total_Error + Error
P = Kp * Error Or P = Kp * Error * Tip
I = Ki * Total_Error
D = Kd * ( Error - Previous_Error )
PID_out = P + I + D
PID_out is limited in range of -500 to +500
PID_out = PID_out + 500
And now we power the soldering Iron for PID_out milliseconds
Previous_Error = Error
Pontesiometer R5 varies the Kd factor from 0.00 to 100.00
Pontesiometer R6 varies the Ki factor from 0.00 to 100.00
Pontesiometer R7 varies the Kp factor from 0.00 to 100.00
Pontesiometer R8 varies the max temperature from 0 degrees C to 512 degrees C
Pontesiometer R9 varies the safe time from 0sec to 900sec
Lfuse = E4h
Hfuse = D9h
|At 11 July 2013, 0:58:45 user Luigi wrote: [reply @ Luigi]|
Pictures detailed are not available.
Hex file download need explain to describe how are created (IDE AVR STUDIO) to prform corect upload, please.
At 14 March 2013, 10:12:46 user Jay Stillz wrote: [reply @ Jay Stillz]
Do you think its possible to convert a pitbull turbo charger, pibull x3 (http://www.competitionelectronics.com/retired-rc-products.html), into a digital slodering station ??
At 23 February 2013, 2:34:29 user Michael wrote: [reply @ Michael]
@Hercules Trapierakis Can you please provide us with the source code? thanks!
At 5 September 2012, 13:44:46 user Teo wrote: [reply @ Teo]
Hi, good work!
Can you post a C code of this solder station?
Sorry, but i've arduino uno, i have flashed a bottloader into atmel 8, and i want to load the scatch on this chip.
i can't load hex code with arduino, right?
At 7 August 2012, 14:03:18 user Chris wrote: [reply @ Chris]
Hi - could you please provide me with the source code?
That knob on the front-panel - is that a potentiometer or rotary encoder?
At 5 August 2012, 19:58:59 user metal wrote: [reply @ metal]
Where can I find the source code :(
At 28 July 2012, 7:22:53 user Rohit Soni wrote: [reply @ Rohit Soni]
hey hiii... please provide me the source code for this as i m using opamp for thermocouple.... so need to apply some changes to it to work out wid pid... thanks....
At 10 April 2012, 23:53:57 user Hercules Trapierakis wrote: [reply @ Hercules Trapierakis]
use this one: Controller firmware with P = Kp * Error
the time is selected with R9
At 10 April 2012, 12:15:45 user Pantelis wrote: [reply @ Pantelis]
Hello everybody, i made this circuit but i am stacked to the hardest part of the project, i want to programm the avr. I will make this circuit on the breadboard http://electronics-diy.com/avr_programmer.php but i can't understand witch one hex to use,should i place R5-R9, i have understand what PID is ,but i don't know if its a must. If i use these i will have a better accuracy at the pointed temperature i have select?
Who can i determine the time that the solder iron will shut down?
At 24 January 2012, 1:55:08 user herctrap wrote: [reply @ herctrap]
no i haven't
but Yiannis sais that fair easy to make it
At 24 January 2012, 1:46:15 user Kammenos wrote: [reply @ Kammenos]
@herctrap have you tried this bungard sur tin?
At 23 January 2012, 15:46:53 user herctrap wrote: [reply @ herctrap]
mine with flx and solder no chemicals
search for bungard sur tin
At 23 January 2012, 2:54:16 user Kammenos wrote: [reply @ Kammenos]
@herctrap Yes we want a video with the tinning method! ;) ;) I have found some chemicals for chemical tinning, but i can only order large quantities since they are hazard liquids
At 22 January 2012, 22:30:32 user herctrap wrote: [reply @ herctrap]
yes with a lot of flux and solder
but i have learned to do it better
if you want i will make a video next time
At 22 January 2012, 15:00:59 user Kammenos wrote: [reply @ Kammenos]
@stij i suppose with the soldering iron and solder ???
At 22 January 2012, 14:50:27 user stij wrote: [reply @ stij]
how do you tin the pcb board and it is silver?
At 18 January 2012, 12:45:17 user herctrap wrote: [reply @ herctrap]
you can set easily the Kp Ki Kd factors
i actually used it as a P controller only
i didnt use the pots - i programm it from the software
At 18 January 2012, 9:19:45 user Kammenos wrote: [reply @ Kammenos]
one question, why you used potentiometers to set PID values and temp values? Any particular reason?
At 18 January 2012, 9:15:54 user Kammenos wrote: [reply @ Kammenos]
Let me say that once more: I envy the "auto turn off" function. If i had time to work with my soldering station, i would add it.
HOT in heaven!