For some reason I forgot to put C28 and C22 on the board. Both are 100pf 50v 0805 ceramics, Make sure to put them there. Also skipped C27 (0.1uf 50v) They are drawn in the images, I'm just really bad at multitasking. Hard to keep track about everything while recording. R40, R43, C30, C17 are not used.
DPM8605 step down converter in constant current mode and some logic on the ESP that will capture some spikes and toggle the spark according to the settings.
@@9782ravi The board has a footprint for a flash capacitor and can be used with a resistor based PSU too. But the DPM solution provides much more control. And as bonus the code is able to change voltage and current on the fly for probing etc. After I started to work with it it worked too good to change anything.
@@G-EDM better cuts, longer cuts without breaks, less threading, fewer wasted parts attempts. Depending on how often you use the machine it will pay off. Once built, it keeps working.
@@gerritvisser It is almost impossible to break the wire now at reasonable settings. If it runs into a true short the protection logic will react fast and you can set the microseconds allowed for short circuits. Once some people buy stuff I call it pay-off time. Everything else is fun and trouble.
Do you want it done fast or do you want it done right is always a decision :-) The belt walking is likely due to shafts not being totally parallel to each other, the washer is a good solution at these speeds.
Took three hours but will last a lifetime. You're right on that, but three hours is too much. The printed belt has some blobs and the guide bearings are on the outer edge. I increased the tension before the cut and the belt walked a little over the bearing edge creating side drift. Will design a printed idler housing for the bearings. The washer solution is just temporary.
0.6-1.2A if I remember correct. Cutting the 30mm block is not easy and it took hours. Maybe there are some ways to improve the software a little but at 60v and with bad flushing there are limits.
@@klausbrinck2137 If you want one let me know. The initial ones I made are for betatesters and not for commercial sales... I do have one left... The parts where ordered at very low margin and building them was expensive. I would have to take 249.- for the prototypes. Once this becomes a commercial product price may drop to 149.- per set. You know where to find me. :D PS: Wohn in Worms.
Many things are already on github except sensorboard schematics, gerber files and the new code: github.com/G-EDM/GEDM-EVO2-CNC I'm waiting for some donations before everything is released. Need to get some of the investment back.
Thanks. Is not easy to write the control logic but there will be a new video soon. Seems the magic is to not try to prevent shorts but to let it short controlled without dropping the voltage. The average Amps in the video cut was 0.3A. Currently burning at constant 0.6A and allow short circuits up to 2A for a given number of microseconds without dropping the voltage. Short circuit with a voltage drop seem to be the root issue I had. Fixed it now. Don't fight the shorts, fight the forward motion.
@@G-EDM I am not an expert in electronics, but yes, the control of the power that the wire can support without burning that is the difficult thing to achieve, it is something that not everyone understands, the ‘easy’ is to build a generator that gives many amps.
@@tessenCNC Lucky I did not have to go that deep into electronics. Current control is done with the DPM buck converter that works well. It can be set to a current that the wire can take and for a given time range the wire can also take a much higher current. Problem with the DPM is only that once a short circuit happens the voltage drops and that drop makes a short circuit worse. Just figured that out today and will add some new logic to the code.
Once the donation goal is reached there will be further updates on the github including the firmware: ru-vid.com/show-UCoIoNHZXxYS62TKj-t5VRNQcommunity?lb=UgkxByzXdj4Pc9uoHrCEO_O3Vch0-NmCXyq3
😂 The AI music is a game changer. Maybe not for long texts but for intros, hooks and a few random lines and for instrumentals is seems very nice. No more youtube content with the overused royalty free music most people are already sick off.
Currently there is no sale. But there will be soon. Contact: goblin-dev@proton.me Feel free to join the discord for the latest info: discord.gg/9cTsyDkEbe
Currently it is too stable with a tiny too much forward pull. At the settings that produce this stable burn the wire will get stuck at some point. At 60v the kerf width is just too tiny. But this is something that will be fixed soon. No big deal. Good news is that the wire does not break. Protection logic will go into pause if something is wrong.
Hi I want your advice what Is good option to buy for me/ used made in 2000 Machine EDM Wire Cut - Agiecut Evolution BC 2 made in SWITZERLAND good used OR unused Chinese Machine I need your suggestion
With the Buck converter it works without one too. But the flash cap increases the discharge energy and makes the feedback a little smoother. It is basically a leftover from the early stage of the board.
Great job, i'm proud of you! But... your english is..., how could I say in the loveliest way.. ... the only option to see the video is the "mute mode" :P 😂 Big hugs 4 u, little depfri!
