New Jarduino build gets started

daplatapus · #1 06-07-2013, 12:38 AM

Got a wee bit done this morning over my coffee. Drilled one of the heatsinks to within about 1/8" of the back of the 3-up stars since they'll be on the longest and probably run the hottest. Then a bit of thermal epoxy dabbed in the hole and plunked a DS 18B20 sensor down in there. I need to find a way to block off this vane a bit to try and make it not so affected by the fan, thinking of just cutting a tight fitting piece of foam or something and gluing it down in there between the sensor and fan.
I'll try and wire a bit of it tomorrow morning.

daplatapus · #2 06-09-2013, 05:26 PM

Well, I fired up my Jarduino for the first time with everything hooked up. All the new cables, temp sensor for water and heatsink fans, etc. So far it looks like all the LED circuits are working as planned, the temp sensors are working, but I can't get the heatsink fans to run. Hmmm, no idea why. According to the drawing I have for the fan circuit, it says to use PWM pin 45 on the Arduino and pin 48 for the fan enable, but I went through the sketch and I think it's actually PWM pin 44 and 47 for the enable. So I used those but nothing...
Temp is holding steady at 27.5 C. I turned down the temp value so the fan should have come on at 20C. If there's a PWM signal from the arduino, where and what would I measure in the circuit?

daplatapus · #3 06-09-2013, 06:06 PM

Well as the other colours are coming on the heatsink temp has climbed to 34.5C. Gonna turn this off until I can get 'er figured out

reefme · #4 06-09-2013, 07:42 PM

Want to help, but I don't have a copy of it.

daplatapus · #5 06-09-2013, 10:29 PM

Sorry, page 17 post 162 of this thread.

reefme · #6 06-09-2013, 10:37 PM

Ya, but you have to look into the sketch to make sure it's assign to that pin.

daplatapus · #7 06-09-2013, 11:08 PM

Oh, that, lol, ya I did. I have a feeling it's not a sketch related problem.
The lines I found in the sketch that I think do what I'm wanting are:
const int HoodFansPWM = 44; //PWM Hood Heatsink Fan (code added so frequency = 25kHz)
const int HoodFansTranzPin = 47; //Hood Heatsink Fan on/off

This would leave me believe the arduino pins would be 44 and 47, not 45 and 48 as per the diagram previously referred to.

I have a feeling it's a wiring issue. That's why I was hoping to figure out if I should be able to read certain V's at specific places to be able to troubleshoot the circuit.