Bericht:
Thanks for your job, .... I want to use a control temperature for cooling a
Canon EOS for astrofotography.
If you want , if is possible to send me a PCB diagram (in pdf)i send you my
congratulations and greatings from Italy
Carlo Martinelli
Peltier controller.
I wanted to build a cooling temperature controller for some time now. The purpose was to experiment with microcontrollers and temperature controls.
For the cooling I'm using a peltier element.
The circuit board:
Pictures:
Yesterday I finally got the code working and today I have mounted the temperature sensor on the cold side of the peltier.
The temperature controller working:
The temperature sensor mounted:
On the next picture u can see how the peltier is squeezed between the aluminum and the heat sink:
The heat sink is of an old P2 processor.
Component list:
Name: Value: R1, R2, R3, R4, R5, R6, R7 180 Ohm R9, R11, R12 1 KOhm R13, R14 4k7 C1, C2, C3, C4 100nF 7Seg1, 7Seg2 7-Segment display CC T1 High power darlington T3, T4 BC547 VR1 7805 IC1 PIC16F628 IC2 TC74A0
The code:
'**************************************************************** '* Author : Coenen Stijn [Stynus] * '* Notice : Copyright (c) 2008 ElektronicaStynus.be * '* : All Rights Reserved * '* Date : 15/06/2008 * '* Version : 1.2 * '* Notes : * '* : * '**************************************************************** Device 16F628A Config WDT_OFF, PWRTE_ON, MCLRE_OFF, INTRC_OSC_NOCLKOUT, LVP_off ALL_DIGITAL = true '**************************************************************** Symbol digit1 = PORTB.5 Symbol digit2 = PORTA.1 Symbol digitA = PORTA.0 Symbol digitB = PORTA.7 Symbol digitC = PORTA.2 Symbol digitD = PORTB.6 Symbol digitE = PORTB.3 Symbol digitF = PORTA.6 Symbol digitG = PORTB.2 Symbol peltier = PORTB.4 Symbol SCL = PORTB.0 Symbol SDA = PORTB.1 Dim getal1 As Byte Dim getal2 As Byte Dim getal As Byte Dim index As Byte Dim temperatuur As Byte Symbol gewenst = 10 '**************************************************************** init: Clear I2Cin SDA,SCL,$90,[$00] '**************************************************************** main: While 1 = 1 GoSub sensorIn getal1 = temperatuur / 10 getal2 = (temperatuur - (getal1 * 10)) GoSub dispUit If temperatuur < gewenst Then Low peltier Else High peltier EndIf Wend '**************************************************************** sensorIn: I2Cin SDA, SCL,$91,[temperatuur] Return '**************************************************************** dispUit: ' A ' F B ' G ' E C ' D For index = 0 To 1 If index = 0 Then getal = getal1 High digit1 EndIf If index = 1 Then High digit2 getal = getal2 EndIf Select getal Case 0 High digitA High digitB High digitC High digitD High digitE High digitF Low digitG Case 1 Low digitA High digitB High digitC Low digitD Low digitE Low digitF Low digitG Case 2 High digitA High digitB Low digitC High digitD High digitE Low digitF High digitG Case 3 High digitA High digitB High digitC High digitD Low digitE Low digitF High digitG Case 4 Low digitA High digitB High digitC Low digitD Low digitE High digitF High digitG Case 5 High digitA Low digitB High digitC High digitD Low digitE High digitF High digitG Case 6 High digitA Low digitB High digitC High digitD High digitE High digitF High digitG Case 7 High digitA High digitB High digitC Low digitD Low digitE Low digitF Low digitG Case 8 High digitA High digitB High digitC High digitD High digitE High digitF High digitG Case 9 High digitA High digitB High digitC High digitD Low digitE High digitF High digitG EndSelect DelayMS 2 Low digitA Low digitB Low digitC Low digitD Low digitE Low digitF Low digitG Low digit1 Low digit2 Next Return '**************************************************************** EndIf I have some time in the future maybe I will write a program of a PID controller.
Naam: carlo martinelli
Datum: 14 May 2009, 16:18
Datum: 14 May 2009, 16:18
Naam: kubilay
Datum: 19 Jun 2009, 11:06
Datum: 19 Jun 2009, 11:06
Bericht:
firstly thanks for this great sharing, but could you sent the PCB diagram of the controller circuit??
firstly thanks for this great sharing, but could you sent the PCB diagram of the controller circuit??
Naam: Stynus
Datum: 19 Jun 2009, 12:01
Datum: 19 Jun 2009, 12:01
Bericht:
Hello,
If you put your email address in the email box above the comment here I could send it. But with no email address it is difficult to send :p.
The email you fill in, in the email address box is for the admin only so it is spam safe.
With kind regards,
Stynus
Hello,
If you put your email address in the email box above the comment here I could send it. But with no email address it is difficult to send :p.
The email you fill in, in the email address box is for the admin only so it is spam safe.
With kind regards,
Stynus
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