Re: RAMPS for Due!
I agree :) Ok, I am updating the board layout with the thermistor and other changes then.
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Just a Q: I looked through the example circuits you created and noticed the 1K resistor change. I'm fine with that, however I do have one suggestion: Where the pull-up resistor is 1K, can we change...
View ArticleRAMPS 1.4 power input has melted...what is the problem?
I was having issues getting the heated bed to power. Manually or even after i'd run a job Repetier would say "heating bed", and it obviously wasnt heating...no LED light near mosfet, but the extruder...
View ArticleRe: RAMPS 1.4 power input has melted...what is the problem?
Unfortuantely, this sort of thing is a regular problem, and really a design flaw rather than anything users are doing. I think the basic problem is that historically RepRap boards don't use connectors...
View ArticleRe: RAMPS 1.4 power input has melted...what is the problem?
Yea, lesson learned!! no more chinese stuff for me. Luckily (for some strange reason) i picked up a pack of Board Terminal Connectors from radioshack the day after i got my RAMPS...honestly not...
View ArticleRe: RAMPS for Due!
Sure, we can do that. I've just pushed a new layout with the thermistor changes, and a few other things. I added the locking connector for E-STOP, and also a external 5V connector. For now the...
View ArticleRe: RAMPS for Due!
Given the trouble we have seen on the Due board layouts with un-labeled board changes ---- put a rev on the board and the docs !!!! I often find myself using things like A1 A2 A3 for small changes and...
View ArticleRe: RAMPS for Due!
I seem to remember changing the silk on the layout to say V1 Rev B a while ago. I'm happy to have it be V2 Rev A. Note: There's still a few labels that could be moved about to make a bit more sense,...
View ArticleRe: How many extruders do you need?
Just a thought - why not multiplex the extruder control and switch on whichever extruder you require (you could feasibly do it with one extruder driver and just multiplex the output control with a...
View ArticleRe: RAMPS for Due!
QuoteCefiar I seem to remember changing the silk on the layout to say V1 Rev B a while ago. I'm happy to have it be V2 Rev A. Note: There's still a few labels that could be moved about to make a bit...
View ArticleUse extern powersupply to heatbed with Melzi board
Hi all. I have a Mk3 Heatbed wich can be supplied with both 12 and 24 volts. My problem is, that when running on 12 volts it can get higher than 97C due to low room temperature (we are in the middle...
View ArticleRe: Use extern powersupply to heatbed with Melzi board
ooUUps. I missed a "not" between can and get. Correct sentense is: ....when running on 12 volts it can not get higher than 97C....... Sorry
View ArticleRe: Use extern powersupply to heatbed with Melzi board
Solid state relays work well for heated beds. You can then use an completely separate power supply. I use [www.ebay.co.uk] You just need to connect the relay input to the bed output on your board....
View ArticleFactory firmware restore on gen6d
Hi all, I have a gen6d electronic board for my prusa. I wanted to change the factory firmware to repetier. Therefore I backed it up with winavr ( cmd rule: "avrdude -c avrisp -b 38400 -i 10 -p m644p...
View ArticleRe: Use extern powersupply to heatbed with Melzi board
You don't need any extra electronics as long as the bed current is not too high for the Melzi. Just disconnect the bed from the positive terminal on the Melzi and connect it to 24V. Link the 0V from...
View ArticleRe: MK2 Heat Bed Wiring- stand alone
I've looked into the RAMBo possibility and it's becoming more feasible to me, it's kind of confusing with all the different configurations. I'd wire the two Y motors in parallel, which I'll check when...
View ArticleRe: RAMPS for Due!
never mind hopefully.. my package has been found in philly.. what the heck is it doing there.. heres hoping its still okay.. speaking of these ramps-fds. anyone got a spare one in the usa? I ordered...
View ArticleRe: Factory firmware restore on gen6d
Try adding the "-B 8" Or maybe other numbers for you... After this my chip ID was read correctly and it would write
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L297 + L298 circuit not working
I have paired up L297 and L298 together to make a bipolar stepper driver. My schematics are : aKyKm.jpg I have hooked up the step and direction pin number 4 and 5 respectively on Arduino. I am using a...
View ArticleRe: L297 + L298 circuit not working
I think your speeds are way too optimistic, try milliseconds instead of microseconds. I would also calculate a proper time interval, it's only a division (t=1/f). Also you change direction in places...
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