У нас вы можете посмотреть бесплатно EP7 – DIY PCB – Best DIY PCB EVER! (Double Sided SMD) или скачать в максимальном доступном качестве, видео которое было загружено на ютуб. Для загрузки выберите вариант из формы ниже:
Если кнопки скачивания не
загрузились
НАЖМИТЕ ЗДЕСЬ или обновите страницу
Если возникают проблемы со скачиванием видео, пожалуйста напишите в поддержку по адресу внизу
страницы.
Спасибо за использование сервиса ClipSaver.ru
So this is where the magic will hopefully happen, I finally make a high density double sided PCB. Will I succeed? Will I fail? Watch the video to find out! This is the seventh episode in a series where I am challenging myself to make the best possible DIY PCB’s using commonly available low cost CNC technologies. Please access the 3D models featured in this video using the below link: https://www.printables.com/model/1197... Below is some detailed documentation about my method. [SOFTWARE USED] KiKad Version 6.0.6 (Circuit & PCB Design) FlatCAM Version 8.994 BETA (Generates G-Code, but requires editing) Grblcontrol (Candle) Version 1.17 (CNC Control) [CNC SETUP] RATTMMOTOR CNC 3018 Pro (with modifications as follows) Aluminum 3018 Z-Axis Module + X-Axis upgrade kit StepperOnline NEM17 42Ncm Stepper Motors (x3) LaserTree Gold 450nm 40W-Pro 12V 20mm Fixed Focus Laser Custom end stop switches (x6) Custom emergency stop button Custom Z & X-Y probe Custom cable management Custom waste board & PCB Mount + Locating Pins 0.7mm & 3mm End mills (Range of sizes on hand is recommended) Using ThinkPad E495 to control the CNC [OTHER EQUIPMENT] Elegoo Mercury UV Exposer Mini-Bandsaw 150 Mesh Silkscreen 150mm Embroidery Ring 10cm Rubber Spatula Fine haired toothbrush Ikea glass & plastic containers Hand File [CONSUMABLE ITEMS] Ferric chloride etchant solution 70mm x 100mm Double Sided Copper Clad FR4 PCB Ferric chloride etchant solution Mechanic UVH900-WY 10ml UV Resin (White) Fast 10sec curing WNB UV-W100 100g UV Resin (Green) Conduction CD-LT528 138 degree lead-free solder paste Hozan H-42-3717 0.8mm flux core leaded solder 0.7mm wire (for vias) Isopropyl Alcohol (99.8% or greater) Tissue Paper *********** KiCad Track & Clearance Information *********** Grid = 0.3175 Clearance is factor of 0.5 with minimum of 0.15 (0.1mm laser 50% overlap) Track width minus clearance should be factor of Grid (examples follow) 0.3175 - 0.15 = 0.1675 0.6350 - 0.20 = 0.4350 0.6350 - 0.25 = 0.3850 0.6350 - 0.30 = 0.3350 Fill clearance 0.2mm and min width 0.25. Must be 0.635 from board edge Board cutout line 0.1mm thick with 0.635 radius corners Push 45 degree tracks so they are snug to each other Standalone pads should have a 0.4mm stubby track to sink heat during clearing *********** FLATCAM FILE PREP *********** [Double Sided Tool] Set Axis Y 2-places Mirror operation set W/2,0 Mirror back layers Drill hole 3.6mm Set grid 0.5 Locate 2 holes -2.5,-2.5 from left corners (shift-click to copy value-then +Add) Create excellon object ** Mill & laser origin alignment still an issue. I am working on this... [Copper] Isolation Routing 0.1mm tool, 18 passes, 50% overlap Generate geometry Z-travel 0, X-Y feed 500, Z-feed 1000, spindle 4000 (So far this looks good. Possible cooler is even ok, but risky) Generate CNC job Save CNC Job Use Text editor to replace unwanted Z-moves & other [Silkscreen] Isolation routing 0.001mm tool, 1 passes, 0% overlap Generate geometry Paint Tool 0.1mm tool, Overlap 50%, Offset 0, Method Standard, Disable connect Generate geometry Z-travel 0, X-Y feed 500, Z-feed 1000, spindle 2500 (So far this looks good. Possible cooler is even ok) Generate CNC job Save CNC Job Use Text editor to replace unwanted Z-moves & other Save modified version with spindle 150 (For setting UV resin) add "_UV_Expose" to filename (150 works well with fast resin "Mechanic" white, clean with alchohol & final UV expose for 30 secs) [Mask/Clear Pads] NOTE: This setting is usable but must be improved. Isolation routing 0.001mm tool, 1 passes, 0% overlap Generate geometry Paint Tool 0.1mm tool, Overlap 0%, Offset 0, Method (Lines), Disable connect Generate geometry Z-travel 0, X-Y feed 800, Z-feed 1000, spindle 2500 (Leaves some residue for cold pads, but any hotter is no good) Generate CNC job Save CNC Job Use Text editor to replace unwanted Z-moves & other [Board Cutout] (Board Cutout line is 0.1mm, round corners) Cutout Tool Tool 0.1, Cut-Z -0.858, MultiDepth 0.058, Margin 0, Gaps (None) Generate Geometry (X) Select geometry Z-travel 2, X-Y feed 500, Z-feed 1000, spindle 10000 Generate CNC job Save CNC Job Make sure cut line well with etched copper zone! [Alignment Drills] Drilling Tool CutZ -7, TravelZ 7, FeedZ 50, Spindle 10000 EndMoveZ 25, PreProcessor (GRBL_11_no_M6) Generate CNC Job Object Save CNC Job [Pad Holes] Drilling Tool CutZ -2.5, TravelZ 1.5, Spindle 10000, Dwell 1 ToolChange 25, EndMove Z 25, PreProcessor (GRBL_11_no_M6) Generate CNC Job Object Save CNC Job