If the green light is connected to power, and your sanguino is powered by an ATX power supply then one of the pins must be connected to the ATX power supply to switch it on. For the Gen 3 motherboard this pin is #14 and needs to be written HIGH in order to turn on the power supply. maybe that can give you a place to look?by AgeingHippy - Reprappers
Hey Bugler If you are studying mechanical engineering then you are most certainly capable of building a printer. Just be aware that it is a path that can cost some money. I have spent close to £700 so far and do not yet have a working printer, bt that is because I am partying too much and not spending as much time building as I should. Also, I have spend some funds in tooling up with a temperatby AgeingHippy - General
It really is great to see all the new options coming online. good luck with this endeavourby AgeingHippy - Next Wave Electronics Working Group
Hello All Unfortunately it seems PLA is rather pricy so I am considering starting with ABS. ReprapKit seems to have the most reasonable pricing for UK supplies so I was wondering if anyone has any comments regarding the quality of their ABS. Also, if anyone can point me to a more competative source that would also be appreciated. Cheersby AgeingHippy - General
Hi Rich Yes, that is the route I am going down now. I will probably get 2 pololu drivers. Use one to replace my burnt out stepper and the other for the extruder - that whine will get pretty irritating pretty quick I am sure. Cheersby AgeingHippy - Controllers
Hi Cefair I am afraid I am in the UK so the sale will not work for me - shipping costs and customs duties etc...by AgeingHippy - Controllers
Hello all Following my failed attempt at replacing the stepper driver chip on my burnt out G3 stepper board I am once again seriously considering using a pololu stepper driver to replace the burnt out stepper driver. Browsing for a reasonable priced supplier I stumbled upon 2 versions of the driver. The standard version and the version with voltage regulators. The latter is almost 6 quid more eby AgeingHippy - Controllers
Well that has been a waste of time and effort Still only getting one side of the motor energised... A and B are lighting up but the other coil is dead! I had some really persistent solder bridges that resulted in the chip being heated more than I would like. Is it possible I have trashed the chip that way? Is there anything else on the board that could be dead and therefore not getting C &by AgeingHippy - Controllers
Hello All I am getting close to being ready to actually start extruding and was wondering which type of plastic should I start with. The machine will be (once completed) a bog standard Mendel with Adrians extruder and no heated bed. Cheersby AgeingHippy - General
lol - Flo, as a matter of interest, how much would you be prepared to pay for someone to build one for you? I would imagine a realistic price would *at least* be double the materials cost which is around £600-700 due to the time involved in actually building one... so a finished and tested product would be cheap at 1200 - 1400 pounds IMOby AgeingHippy - United Kingdom RepRap User Group
fwiw - I removed the 1.8k pullup resistor for the SDA pin and now the pin remains low regardless of the signals... so it seams the pin is dead. nevermind, I can use pin 2. learning learning learning - it's greatby AgeingHippy - Controllers
magic Thanks Noobman. Did not even know about that file. So it seems I can simply connect the leg directly to pin 4 of the interface as shown by the board. I must say, I know nothing about electronics but examining the board last night and comparing it to the schematic I learned that the little holes are where the traces go from one side of the board to the other. Well, let's hope that I canby AgeingHippy - Controllers
Arghhh I have lifted a trace while removing the driver chip. Cutting the legs worked well except I obviously put too much pressure on one of the legs... Please see the attached image - the lifted trace is highlighted in yellow. fifth in from the right just under a little hole which it looks like it leads to... Now I have read about a 'green wire' fix. ie. soldering a wire to the leg and the oby AgeingHippy - Controllers
Nice one guys. I like the presentation video as well. Very clear and inspiring in fact.by AgeingHippy - Wire and Thread Embedded Extrusion
you are certainly thinking out of the box here - very interesting thought. I like it.by AgeingHippy - Plastic Extruder Working Group
Hey Vimaan - I don't think the reprap uses 6, only 3 - even though the Gen 3 boards have a min and max connection. Remember the Gen 3 boards are really designed for makerbot... The extruder is not designed for a stepper motor and has been hacked to run one - resulting in a constant nasty whine in your extruder stepper motor. If you are early days and not yet chosen your electronics I would go doby AgeingHippy - General
water my goodness - I would have thought I would want to keep that well away from the electronics. Does that mean that the electronics are resistant to the occasional dunking provided they dry completely before being powered? Using water certainly would be better than spending loads on some commercial cleaner Cheersby AgeingHippy - Controllers
lol - yes, The reprap group is extremely nice and in fact extremely tolerant... scammers generally just get ignored and for interest - here is the closest I have ever seen to a flame war on this forum. fwiw - I am located in York and am muddling along with my machine. -still struggling to get the electronics to work. There is an active RUG (Reprap Users Group) in Sheffield - AKA47 seems to be tby AgeingHippy - General
Thanks for that rich. Do you clean the flux away afterwards? If so, what do you use? been practising on an old printer board I ripped apart. Been raising the traces so still need some practice Off to bed now.by AgeingHippy - Controllers
One thing that seems rather important for SMT soldering using an iron according to the tutorials I have found is is flux. I don't know which flux to get and need some advice. Water or alcohol based, no-clean, flux that specifically states lead-free, rosin etc. Also, is it necessary to clean away the flux (some guides talk about even cleaning no-clean flux!) after having soldered your chip on.by AgeingHippy - Controllers
man - that method I certainly won't useby AgeingHippy - Controllers
Thanks for that Viktor My tip is about 2mm, perhaps slightly less... I will see if I can find a finer tip for my iron. Sad news is Farnell require a minimum order of £20 before I can pay by CC. which is rather irritating. Will need to try determine what else I need - maybe I will look at the parts for a homegrown Arduino/sanguino or maybe even a stepper driver Cheersby AgeingHippy - Controllers
Hi Nop One of the things I did do when starting this incredable journey was to purchase a temperature controlled iron. (I generally am of the mindset that if I need a tool once I will generally need it again and therefore go for slightly better quality). I *think* the solder is lead free... So what temperature should I be setting my iron to? Cheersby AgeingHippy - Controllers
So did you then replace the chip with an iron as per the attached video?by AgeingHippy - Controllers
Hi Viktor Sounds like you use a technique something like this guy for soldering SMT devices with an iron - a pretty good tutorial I think if you can stand the nasty and unavoidable advertising before the tutorial. tangent tutorial 3 surface mount soldering techniques/ I think I will go ahead and try this approach... I would appreciate any other advice anyone can offer. Cheersby AgeingHippy - Controllers
Hello All As per my other posts I have blown one of my Makerbot G3 stepper controllers. Although I have decided the cost effective option is to replace the chip as per this post, I had considered replacing the blown stepper controller with a pololu one. That raises the question of how hard/easy would it be to drive a mix of G3 and pololu stepper controllers from the G3 motherboard. Obviously Iby AgeingHippy - Controllers
Hello All I have fried one half of one of my stepper drivers (Makerbot G3) The motor wires came loose and now it only energises one of the 2 coils. I am guessing it is the A3982 that has popped. I see Farnell have the A3982SLB-T in stock for £4.78 and digikey at 4.03 so there is no problem sourcing the driver. A plus is that farnell does not charge for standard delivery so it seems the costby AgeingHippy - Controllers
Hello All I seem to have fried one of my Makerbot stepper drivers bu the motor leads coming loose while testing How would one fix this? I see some talk about MOSFETS so is it that chip next to the motor connectors that simply needs replacing? Also, I notice a lot about homegrown electronics but very little about homegrown stepper drivers. In the UK the pololu is now around £16.70 each - so 4 oby AgeingHippy - Controllers
lol - is Liberia the only other part of the world (besides the USA) stuck in the stone imperial age?by AgeingHippy - General
Solved - For anyone following, I redefined pin 1 as my SDA within the firmware and wired from there - not as clean but it works. Seehereby AgeingHippy - Controllers