1
Project logs / Re: Simple Soldering Iron Driver (SSID) with Arduino PID Con
Hello, the main difference is at the sensor type of the soldering iron.
Hakko907 uses a thermostatic instead of thermocouple.
Due to a lack of knowledge (at that time) I used a simple voltage divisor on the sensor.
There are two cons on that: measurements could be better (but is is ok anyhow), and a high current drain due to low resistor series.
My next project is a simple change using an opamp LM358 to get better resolution and low current drain. I will provide it ASAP.
My current project on "SSID06" (corrected) folder:
http://https://www.dropbox.com/s/q9zffpwiuw6r4xv/Soldering%20Station%20MOD.rar?dl=0
I realized the LM7809 was heating too much, so I placed a heatsink on it. In order to monitor temp of the heatsink, I placed a LM35 temp sensor sticked on the heatsink. I made a change on the code, so when the 3 buttons are pressed at the same time, I can see the internal temp on the display.
Some other small changes on the code were made. I dont remembar all now, but it is working very well.
Let me know if you need any help.