... i've found the sources (and some aditional too): - ICE - free C-library and tools for IR: - DIAS - maybe now for free too?: - VIGRA: - IR-package from University of Hamburg: - and the CImg-library: Viktorby VDX - Reprappers
Hi sid, some years ago i did some tests with a low-cost (DIAS, 650by VDX - Reprappers
... my first experiences with 'geological times' (e.g. >10hrs rendering for a 3D-scene with 800x600 resolution) were on a 12MHz-V20 with 1MB Ram and a PC-XT-Clone (with math. coprocessor and 4MB Ram) and Autocad 9 and/or POV-Ray2 ... Now we're in the ranges of some giga-Hz and giga-Bytes, but 'actual' software consumes this resources in the same exponential rate - so your hardware is five orby VDX - RepRap Host
Hi Fim, ... bis Ende des Jahres werde ich kaum noch Zeit fby VDX - Schwarzes Brett
Hi sid, ... look at if you're searching magnets (or ask me, maybe i'll have some dozends of your desired size ) I had to design and to build some magentic components as motors, magnetic gears, hysteresis-couplings an such, so there's some experience and residues around ... Viktorby VDX - Reprappers
Hi Fim, ... willkommen in der Runde! Dann sind wir ja direkte Nachbarn - ich pendle Wochentags tby VDX - Schwarzes Brett
... then it's the same again (remember some old discussions) with a homebrewed CNC-mill: - this definition classifies this CNC-mill as RepRap, because i can make most mechanical parts for a new one and the PCB's (what's more, then Darwin is capable to do!) and need only the mill-head, the stepper-motors, some linear bearings and the electronic components ... Viktorby VDX - Reprappers
Hi sid, for fast (>1kHz) PWM-switching a 8Watt-diodelaser i used this part: (HALBLEITERRELAIS 1A 25A 250VAC AQN411VL) from Conrad. It's simply triggered by 4 to 32Volts DC (i run it at 5Volt) and is able to drive until 25Amps ... But it's a bit pricey with 32 Euros Viktorby VDX - Mechanics
... you have to calculate with the current through the coils - this is 3.0 Ohms, so you would have a measured voltage over the coils of 3 Volts ... Viktorby VDX - Controllers
Hi Forrest, i have a PT100-resistor empedded in a 2mm thick ceramic-tube and had the idea to place it inside the heater, so it would have contact to the molten plastic or paste. I tried with a digitally controlled soldering station, but the power wasn't enough, so when the plastic flows by it changes the temp-readout in the range of someby VDX - Mechanics
... i'm actually using and optimizing high-precision-heaters for our WLD-sensors - here i have three diferent designs with heater-transistors or -resistors, where a NTC-resistor or a PT100 acts as sensor and an OP-cascade controls the end-temperature with an accuracy of some 1/100by VDX - Mechanics
... then make overlapping puzzle-fittings. Think in 'lego'-metrics - build any size you want from smaller interlocking pieces and slices ... Viktorby VDX - General
... you can embedd other parts and materials by placing them on the bed and fabbing the body 'upside down'. As hint for changing/finishing the surface you can heat the fabbed object with a hotair-gun or gas-torch (be very carefully then) and stick some thin sheets of your 'finishing' material on the melted surface (for example PTFE-stripes, aluminium or even cutted fitting steel-film parts) or sby VDX - Reprappers
... i have different coloured glue-sticks (see the image in the linked post) with different hardnes and rigidity. Maybe they are made from different materials too? I think its mainly EVA, but i have some special glue-sticks and granules meant for wood, they are really stinky ... Most of the translucent ones are elastic, the yellowish and some of the brown are stiffer, so would be a good materiaby VDX - Reprappers
Hi Andreas, ... a hint for sharp photography with IR-translucent objects: - position something substantial (e.g. a flat box) as dummy-target beside your part in the same distance. Then focus the target with half-pressing the camera-button. Then hold the button, turn the camera to focus your part and finally press the button to get the image ... Beside - read through this thread resp. glue-gun-fby VDX - Reprappers
Hi Andreas, nochmals willkommen Meine ersten 'mechanischen Ideen' fby VDX - Schwarzes Brett
Hi Andreas, fast recovery for your son! - My two consume most of my time even when they're well For your design - when you want to reduce the count of used IO-pins, add discrete stepper-drivers with only two pins per motor (DIR and CLCK). You can find cheap IMT901-drivers or better the SMC11-drivers from Nanotec ( for nearly 30 Euros each) - they manage 1/8 (1/16) microstepping and drive motby VDX - Reprappers
... now the other evolved to 3D-chips. DarthVaders mask (milled from black POM and floor-laminate): Viktorby VDX - General
Hi Andreas, ... good start I see, you have the new Robo-Pro and -expander - so enough ports for future needs ... Some ten years ago Fischertechnik sold 2D-plotter-kits with aluminium-bars and stepper-motors, so if you'll eventually find some of this sets (ebay or elsewere), you could build more rigis mechanics - some big companies (Volkswagen, BMW, Siemens, ...) developed most of their electrby VDX - Reprappers
... i (reversible) disassembled one of our windows-blinds and made some photos (appended) - the sprocket and the fastener/merger are reprappable parts ... And we already had some discussion about beaded belts (here: ) or moulding beads over strings or connecting ball-chains (here: ) Viktorby VDX - Mechanics
peteredworthy Wrote: ------------------------------------------------------- > ... > Am I right in > thinking that a mA scale constant current device > in series with the RTD would produce a voltage > across the RTD proportional to it's resistance & > hence the temperature? yes, with a constant current the voltage drop over the resistor is temp-proportional and linear too .by VDX - General
... why didn't you use a PT100 as temp-sensor? - I use the 'naked' types with the blue glass-sealing: It gives a nearly linear range from 0by VDX - General
Hi Larry, i have some very thin MICA-sheets which are normally used as isolator for high-power-transistors - you can bend them to fit on the surface of a coffee-mug, but not much more or they will break. Modern much more elastic heatsink-insulators are made from silicone with some embedded fabric - maybe very thin mineral-fibres. Maybe you can use glass-fabric (as used with epoxy for buildingby VDX - Mechanics
... maybe aluminium- or iron- casting moulding for the complexer parts? We had som discussions about lost-cast-moulding: - reprap the parents from plastic or wax (or mould wax-copies), make sand-waterglass-moulds, sinter/burn the moulds or simply pour the fluid metal through the wax-object ... Viktorby VDX - Mechanics
Hi Max, i'm interested too! I have two main areas for sintering ceramics or metallic compunds: - first room-temp-fabbing and/or IR-presintering 'green' parts and finish in the kiln - second combining paste-extruding and laser-sintering for fabbing ceramics with embedded conducting 3D-segments 'on the fly' ... Viktorby VDX - Casting and Moldmaking Working Group
... we already had here some spam-bots which simple copied a piece of a previous post and added a link or reference to another post. Some of this copy-paste-operations were clever enough, so some caught response from users The spam posted here could be a simple 'ping' for checking the presence of a site or forum ... Viktorby VDX - Controllers