Re: prevent usb 5V backfeeding
Well, strange as it may sound, my setup initially required both: running the sanguinololu without and with 5V USB (at different times) - hence, the adapter and not the cut trace. Without 5V USB:...
View ArticleRe: Verification failure after upload?
Well, it seems that my usb245r chip is broken. I found a computer with a parallel port, reflashed the bootloader (which worked fine), and tried flashing a firmware (which also worked fine). Before, I...
View ArticleRe: prevent usb 5V backfeeding
You only need to cut one trace, the 5v supply at the usb connector. I'll take a picture and post it, if I dont forget ;) This information should really be on the wiki.
View ArticleRe: Verification failure after upload?
Some ISP programmers can't handle 128k chips like the atmega1284p.
View ArticleRe: prevent usb 5V backfeeding
QuoteThis information should really be on the wiki. Then, please, put it there. Everybody has write access.
View ArticleRe: prevent usb 5V backfeeding
lajos, that would really help if you could post a picture of what you did. That way I could confirm we have the sme board and make the cut. Thanks.
View ArticleRe: prevent usb 5V backfeeding
This older thread has pictures. Pick only one option! [forums.reprap.org]
View ArticleRe: prevent usb 5V backfeeding
Attached is a photo of the +5v line cut on my board. Flip your board over, find the pads for the USB connector (4 pads in a rectangle layout above USB2TTL label). You need to cut the track going to...
View ArticleRe: prevent usb 5V backfeeding
Thanks lajos. That does look easy and seems like it should do the trick. I'm not sure why I didn't figure this out earlier when I was looking for a place on the board to make a cut. Maybe I was...
View ArticlePanelou & Sanguino setup ?
I'm trying to connect a new Panelou2 LCD to my Sanguino board 1284p (with onboard MARLIN ) So how do I get the Sanguino to recognize Panelou LCD board ?? I read that I need to use Arduino .23 to load...
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Help Fixing a Sanguinololu After Mistake
Looks like when soldering in some header pins I bridged a couple other pins! The rest of the board seems to work, so I just need someone familiar with Sanguinololu 1.3a to tell me what to jump to the...
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Re: Help Fixing a Sanguinololu After Mistake
Looking at the Pololu pin guide here: looks like pin D is the GND for the microcontroller, while pin C is +12 from the power supply, so the short was actually between two different power sources. If...
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Re: Help Fixing a Sanguinololu After Mistake
Whether I jump A to C or leave them disconnected, when energizing there is an arc from C to D still, despite the charred remains. Here is a picture of the flare up: and here is a macro photo of what...
View ArticleRe: Help Fixing a Sanguinololu After Mistake
I believe I found my answer here. It says: QuoteR.G. Says: PCB cancer. No, not being funny. When a PCB starts arcing, it carbonizes a path under the arc. The carbon traces are conductive, so they keep...
View ArticleEndstop don't work, when more than one endstop are connected
Hi everyone, The electronic I use is the Sanguinololu, I have here one problem with the endstop. The endstops will not work, when several endstops are connected on the Sanguinololu. I tried to connect...
View ArticleRe: Endstop don't work, when more than one endstop are connected
Hi everyone, I found out the reason. With Sanguinololu are on resisters for endstops required. That is the problem.
View ArticleWhy are end stops NO instead of NC?
I am using a sanguinololu 1.3a solution for my 3D printer. When I purchased my endstops they sent me NC instead of NO. Will it cause a problem if NC end stops are used? Why are end stops NO instead of...
View ArticleRe: Why are end stops NO instead of NC?
As you said there are different endstops. Some are NO, some are NC, and some have both NO and NC pins. So it makes sense to have both options. As long as you wire it correctly and the setting is right...
View ArticleRe: Panelou & Sanguino setup ?
I'm using the latest arduino 1.05 for compiling marlin. Actually I believe 1.x+ is required for the latest marlin (feel free to correct me if I'm wrong ;) ). I don't have the same lcd, but looks like...
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