Da Vinci 1.0 got a new brain. (Page 1 of 2)

Once I get it up and running and know the correct firmware settings I will supply full docs along with Mouser part numbers for the connectors and pins. Probably a week at most.

Hi carl,

great job. What did you do with the stop ends? Did you use mechanical ones or did you get a pcb and resistors for davinci ones?
Reason for asking is that chris at volitvo burned his on ramps 1.4. Link: http://voltivo.com/forum/davinci-hwmods … mitstart=0

I'm at the same stage as you, just waiting for opto end stops I've ordered, and am curious how did you solve the "problem".

Ok, thanks for the answer. Please, shed some light on that jumper position, if you managed to find it.
Btw, how did you connect the led strip?
And please, upload your config file after you're done.

Yes there is a thermistor input on the mainboard for the extruder. It is in the 6 pin connector marked Fan bottom edge of PCB three connectors from right side. Not my PCB is an older one and has those two connectors missing but the silk screen and solder pads are there so they are easy to see and count. That Fan harness is the harness that comes from the PCB on the extruder. It is the yellow and black wire in that harness that the thermistor is on. i have confirmed this as the Ramps does register room temp on the extruder with it connected and ZERO with it disconnected.

The jumper is a solder pad that is open for 5 volts and soldered for 12 volts. Since we know 5 volts will kill the sensors IR LEDS we would be crazy to jumper to 12. Instead I am putting a 150 ohm resistor in line with the Vcc lead on the sensors.

If you look at one of the Da Vinci sensors I pulled the one out for the top door since it is of no use to me now but maybe a spare. Any way their pins are marked A , G, and C, That stands for Anode, Gate, and Cathode. In other words Anode is Vcc, Gate is Signal, and Cathode is Ground. So all I should have to do is put a 150 ohm resistor in line with the Anode/Vcc line and it should keep them from frying and still work.

As for the light strip I left it disconnected and installed my own higher output strips along the frame above the Y rails. They give much more uniform lighting, are brighter, and wired directly to the power supply. The machine is in my living room so I don't care if the LED's stay one and they don't use enough energy to even think about.

Well you have two different problems here. One if you are getting error 0014 that means the extruder has heated over the max temp and the system is in emergency shutdown. Now if your thermistor wires are shorted together or touching the brass heat block without insulation then that will make the machine think it has reached unsafe temp while really has not. However if it was a short then you should see a high reading on the hotend all the time on the LCD.

Now you say that the temp will say that the temp show correct but then starts to fall when the print starts or before the head even moves? What temp are you trying to set for and what temps are shown? If you are seeing temps then the connections to the thermistor and board are correct. The issue is that you may have an exposed wire/wires on the thermistor shorting together or against the brass heat block during movement or when the insulation softens and allows the wires to flex more at higher temps.

I'm using a E3D hotend with S3D I don't believe the thermistor wires are shorted. If I try to load filament it will not wait for it to heat it will just start loading and the screen will say the temp is at 169c. I will double check the wires to make sure nothing is shorting. And now I made another boo boo I was messing with board trying to get it to work and shorted the LCD screen. On the motherboard I see I have blown the resistor next to the 5v that lights up, can that resistor be replaced?

Well the transplant was a success and she is up and running once again. Man getting the firmware setup was a nightmare compared to the hardware.

I will do a write up soon once I get all my info together and I will save all my fellow Da Vinci fans the firmware hardship and share mine preset for you.

I know how many talk about the noise level of their machines. I suspect it is the stock board and poor current management making the motors noisy.  As i told you all my reason for the swap was because the stock board was making the extruder motor overheat to the point of stalling.

Well here is a video with the machine running and the camera even inside at one point to give you an idea of the noise level when the motors are tuned properly. I actually have to check to see if it is still running from ten feet away with nothing else in the room but my PC and it's pretty quite fan.

https://youtu.be/_wA8caIVTwI

Awesome.

I may do something similar in the future.

Also forgot to say its a good idea to use a temp gun to check the heat on the stepper motors and adjust pots so they run cool. before i adjusted mine the extruder was running at 142f that's way to hot adjusted the pot and now the all run between 96f - 112f I will send some images of the setup. Right now i am going to try and run PLA and see what happens. Its a 3.25 hour run of an ashtray for the wife so she has one in the bathroom while she is stinking up the house. lol