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Printing issues ...
Thanks. Yeah ok with the Iron, but not done much if anything with ICs.
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WesBrooks
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Yeah, sure.
ATSAME70-XPLD
by
WesBrooks
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Hi All,
I've got a Dev board for a microprocessor that comes with holes in the right place for arduino expansion headers, but none added.
I was planning to use a temperature controlled soldering iron and lead free solder from a reel to fit these. Should I avoid this in favour of solder paste and some sort of focused hot air gun? Recommendations for the latter if the soldering iron is a big no-n
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WesBrooks
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Thanks for the notes on TG. I've got a few ideas on the back burner which will need a heated chamber.
by
WesBrooks
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Arduino Due and Duet v0.6 and v0.8.5 are Cortex M3 based.
Duet 2 (wifi/ethernet) and Teensy 3.6 are Cortex M4 based.
The dev board I have picked and the proposed spec of Duet 3 is Cortex M7 based.
by
WesBrooks
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The Beaglebone and derived firmwares does look very interesting but after a prolonged think I decided I am probably asking too much of myself to be tackling that right now, particularly as the number of users seem fairly light.
I have been able to cobble together parts (M7 dev board, RADDS, TMC5160) that should be comparatively straight forward to get running and still offer a overall package th
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WesBrooks
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Thanks for the comments. Parts on order for yet another project with the side line aim of bringing my coding back upto speed.
I would like to make an add on board for power distribution, earth - DC negative connection, fuses, and power cut relays. I'm hoping this will be a simple introduction to KiCAD. If anyone has favorite tutorials on line please share!
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WesBrooks
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Yeah, fair point. Certainly a regional thing. I would expect the same sort of legislation/regulations in other EU countries too as our laws tend to be harmonised with theirs. Outside EU and UK, no idea.
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WesBrooks
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You're likely to need a heated chamber to print without warping issues. Ideally the heated bed should be above the glass transition temp it the polymer has a sharp transition. Chamber temp is a little less defined. Few in the RepRap comunity go that far, and it will require careful design to avoid over constraint and cope with thermal expansion. For the sort or temperatures you're looking at for
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WesBrooks
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That all seems very accessible then. Is it stil possible to achieve high step rates with spi control of the step sticks? Potentially a bit of a birds nest but I can see the spi connectors are made available on the top side of the RADDS board.
Hadn't realised there'd been a serious bit of poo slinging on the forums with regards the RADDS board. Still the only commercially available 3.3V shield ai
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WesBrooks
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This kicks a few spots off the gran central:
As the SPI and arduino form connectors are unpopulated it maybe easier to put a low profile connector that can bring the SPI out from under the board.
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WesBrooks
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Interesting read thanks. Just spotted ooznest are shipping the RADDS 1.5 board. That and the grand central from Ada fruit would be interesting if I could somehow use the SPI from the board at the same time. It would be an interesting learning curve, a little gentler, and cheaper than Beagleboard Black + a suitable cape.
All that said if I got it running with SPI all I have really achieved is Du
by
WesBrooks
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Yeah, I come from a background of leading the development of the control systems of a laser based metal powder processing system. It was sold as capable of processing reactive metals such as commercially pure titanium and various aluminum alloys. 13849 was coming in and getting close to manditory as I was leaving that and it was tripping up many in the field. Since the laser powder process is rel
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WesBrooks
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Nice. I spy something that resembles a propper attempt at an E-Stop circuilt with force guided contact relays. Did you just break the power to the stepper/servo drivers or do they have interlock loops rated to an appropriate level that you were able to just break the enable? Or was it to interlock something else?!
Step rate? I've seen that CNC controllers tend to use little to mo microstepping i
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WesBrooks
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I've changed the title to be more representative of my slight change in direction rather than restart the thread.
Edit: My initial post was a quick question to see how much experience there was out there and I hadn't read much into the topic. My intention was to start gathering information from the community in parallel to going away and reading up on whatever I could find. I'm a little uncomfor
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WesBrooks
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Ok, I've had a little longer to look at this. Here's the list of boards that are compatible with Marlin 2.0 to a greater or lesser extent:
Shields/capes/whatever that bolt on these boards seem a little hard to come by off the shelf. There are big issues reported with the pre v2.A version RAMPS_FD. RAMPS 1.7 would be an option but again that seems to be hard to come by. I need to do a little mo
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WesBrooks
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Yeah, I'm guessing the main driver for the memory card on the board is configuration files from Smoothie ware. I'm not aware if Marlin 2.0 has changed from firmware config to fule based config.
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WesBrooks
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Mentioning the business was completely unnecessary on my behalf. All I'm going to discuss with regards the business is I don't want to ever be in the situation where all of my eggs are in one basket. In this case I want to be sure there isn't a huge learning curve to overcome if I need to use the latest version of Marlin.
Trying to rephrase again in order to avoid ambiguilty.
I use Duet board e
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WesBrooks
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By stability and security I am referring to supplier redundancy. I just couldn't remember the phrase this morning. The machines are a tool for the business, not a product we trade.
With respect those points have little to do with that, and relate to the performance of the control board. In fairness that wasn't clear in ky original post.
To be a little clearer I already run Duets, and RAMPS (ma
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WesBrooks
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Edit: Formerly titled: "Re-ARM Control Board & Marlin 2?"
Hi all,
A couple of my printers are running RAMPS and I have just seen an advert for a Marlin 2 and RAMPS compatible 'Re ARM' board. Have any of you got any experience in this?
I am happy with my Duet boards and am likely to upgrade them to newer generation duets when cash allows, but I would be more comfortable if I were familiar w
by
WesBrooks
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No worries,Ijust though you were thinking that I was trying to orotect from a heater control of the cartridge failure with my last suggestion rather than fan failure.
Those specs are quite different to that of the automotive fusesI had been working with for my truck loom. I thought 2 was a good rule of thumb. Looks like that is really more like 3!
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WesBrooks
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Quoteleadinglights
A quick edit: The "crowbar" protection that you propose will be very slow acting because the snap switch will take a long time to sense the overheat and the fuse will also take a significant time to blow even at twice its rating.
At twice rated currwnt fuses are normally specified to blow near instantly. That's from a human perspective rather than a MOSFET perspective. Blowing
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WesBrooks
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@leadinglights. Discussion on a few failure modes at once. My last sugheation was at the top of the hot end heatsink and 70 or 80 to detect hotend fan failure which would cause some nastyness well before the hotend exceeded temperature specifications. My bad for not being a little clearer.
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WesBrooks
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With regards the snap switch I was thinking of something like this.
Bolted directly to one of the upper fins. I would use this to short out the circuit powering the relays blowing a DC side fuse. I would resistor limit the short current to just over double the fuse raiting to avoid drawing unnecessary current from the PSU.
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WesBrooks
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Fair point about it being relatively simple to make a heater block. If they're a similar size to the heater cartridge then you could end up with something that looked more symmetrical about the nozzle axis than the standard V6 blocks! I'll have a little read about it. I think 300 is too low for some nylons PCs and almost certainly PEEK, but it could make processing PLA, ABS, PETG and flexibles
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WesBrooks
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Discussion around the topic is welcome!
There are a few failure modes to consider.
If the thermistor looses contact with the heater block the heater won't respond as expected and theefore go into fault.
If the MOSFET fails closed circuilt (common failure mode) the temperature should exceed limits and and heater fault raised.
If the heater fails and shorts out it should blow the fuse for the h
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WesBrooks
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Afternoon all,
Anyone mounted thermal fuses or switches onto the e3D v6 hotend or heatsink? Mind sharing how you did this?
Thanks.
by
WesBrooks
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Morning!
With steppers I am aware that for a given stepper motor the greater the lag from the target position the greater the torque trying to reduce this lag. I have also heard 0.9 steppers have lower rated torque than 1.8 steppers and with either case if the lag exceeds two physical steps the torque will invert and the stepper will loose at least 4 physical steps.
My question is how do simila
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WesBrooks
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Ah, that makes more sense now.
I had a similar issue recently trying to get a open source acrylic laser cut frame processed here in the uk only to find the acrylic used was what is in the uk an odd ball imperial size! :-D
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WesBrooks
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You're aware of the risk, that's all that I wanted to raise.
Yes, I guessed there were already two bearings in the block, but spreading these wider apart on the shaft would stiffen the assembly dramatically for minimal increase in print time.
by
WesBrooks
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