Ez3dx X5.5s - 2k lcd SLA component questions
Posted: Mon Feb 27, 2017 10:19 pm
I have been doing a bit of a tear down to see about doing upgrades. First off a bit of background, this printer was advertised as being very similar to the proniks 2k sla printer with a raspberry pi. As it turned out, it did not have the raspberry and the firmware doesn't even really use gcode so you are such running prints through their software. It's inconvenient but not all bad. I still haven't dialed in my exposure times, and I'm a bit new to sla. I've been working with makerjuice white and have been getting things to set at 15 sec. My biggest problem is things sticking.
Opening the machine there are to main boards. The typical driver board for 2k 5.5 screen you see beings sold for VR. The other is custom board apparently.
The upper corner the website http://www.ez3dx.com is written and this board is version 0.2. The site did not exist when I tried it.
The three major surface mount chips all show damage, or chemical residue?, similar to this. This is next to the USB port so I am assuming it's an ch340 chip based on drivers I needed to install.
I'm pretty sure its arduino based but that is about the CPU part.
The 3 headers in the bottom left corner are the fan screen, fan case and optical endstop from left to right. The upper left is the power to the UV led array. There is a trimpot here, presumably to adjust the sourced current to the led. Upper right is the power input and it has been disconnected. Lower right is the stepper.
Lastly is this array of leds, it's 5x8 and attached to an aluminum heat sink. Original many where covered in brownish compound I assume was a themal compound. I don't know anything more.
I'm making a few assumptions here, like the trimpot, and have no documentation. Any ideas about the leds? Figure out what wattage they are? If they where 1 watt led, this would be a 40 watt array. Is an array like that inefficient compared to a sing COB led? Would it something else like the leds are PWMed down from their max.
Suggestions on how to proceed? Anything other pics or that might be need or wanted? Thank you all very kindly in advance.
Kassie
Opening the machine there are to main boards. The typical driver board for 2k 5.5 screen you see beings sold for VR. The other is custom board apparently.
The upper corner the website http://www.ez3dx.com is written and this board is version 0.2. The site did not exist when I tried it.
The three major surface mount chips all show damage, or chemical residue?, similar to this. This is next to the USB port so I am assuming it's an ch340 chip based on drivers I needed to install.
I'm pretty sure its arduino based but that is about the CPU part.
The 3 headers in the bottom left corner are the fan screen, fan case and optical endstop from left to right. The upper left is the power to the UV led array. There is a trimpot here, presumably to adjust the sourced current to the led. Upper right is the power input and it has been disconnected. Lower right is the stepper.
Lastly is this array of leds, it's 5x8 and attached to an aluminum heat sink. Original many where covered in brownish compound I assume was a themal compound. I don't know anything more.
I'm making a few assumptions here, like the trimpot, and have no documentation. Any ideas about the leds? Figure out what wattage they are? If they where 1 watt led, this would be a 40 watt array. Is an array like that inefficient compared to a sing COB led? Would it something else like the leds are PWMed down from their max.
Suggestions on how to proceed? Anything other pics or that might be need or wanted? Thank you all very kindly in advance.
Kassie