Electrical Prototyping Supplies - PCBs, Contacts & Terminals

grabcad

A Prototyping Kit; PCBs and a Contact Assortment.This is available on Amazon for $15 and includes five PCB sizes, male & female contacts and screw terminals:KIT CONTENTS:• 8x each of 80x20mm & 70x30mm PCBs.• 5x each 70x50mm & 60x40mm PCBs.• 2x 90x70mm PCBs.• 10x Male 40-pin breakable contact arrays.• 10x Female 40-position socket headers.• 6x 2-Position screw down terminal blocks.• 6x 3-Position screw down terminal blocks.• Kit is contained within a divider-free polyethylene box. Exterior approx. 170x100mm by 22mm thick.AMAZON LINK:https://www.amazon.com/gp/product/B07FFDCF22/ref=ppx_yo_dt_b_asin_title_o08_s01?ie=UTF8&psc=1PCB DETAILS:These boards are good for simple prototyping. They are plated with ¼OZ Cu (9µm) with plated-through holes on 2.54mm grid. See below on mounting and row/column labeling details.60x40mm Prototyping PCB, Plated Mounting Holes, M2 mounting⃰, inconsistent labeling⃰ ⃰.70x30mm Prototyping PCB, Plated Mounting Holes, M2 mounting⃰, inconsistent labeling⃰ ⃰.70x50mm Prototyping PCB, UN-Plated Mounting Holes, M2 mounting⃰, inconsistent labeling⃰ ⃰.80x20mm Prototyping PCB, UN-Plated Mounting Holes, M2 mounting⃰, inconsistent labeling⃰ ⃰.90x70mm Prototyping PCB, Plated Mounting Holes, M3 mounting, CONSISTENT labeling.* The M2 mounting holes are a little under-sized. They measure 2.18mm which is a tight/non-standard M2 "close fit." Some are plated-through, however, only on the inside cylinder walls (not the top and bottom surfaces).** NOTE: Most importantly - There is a reversal of the column indices (letters) from front to back. The numbers are consistent. The lettering are such that a PCB with columns marked A~Z, left-to-right on the front are ALSO lettered A~Z left-to-right on the back. Thus, column A on the front is column Z on the back; Column C on the front would be X on the back, and so on. This "cryptogram" is dependent upon the PCB's total number columns. A hot mess making for some fun rework if one isn't paying attention. (rookie PCB layout mistake!) Considering the cost, I can work with it.MALE PIN DETAILS:The male pin array is 40 pins long, breakable to desired pin count. For "breaking to desired pin count" in the model, simply edit LPattern-Contacts "number of instances" in the model tree to the desired number of pins. Next, modify LPattern-Divots "number of instances" to ONE LESS than the "number of instances" in LPattern-Contacts. For a single pin - set LPattern-Contacts "number of instances" to 1 and suppress LPattern-Divots.FEMALE PIN DETAILS:40 pins (receptacles) long and fixed.TERMINAL BLOCK DETAILS:These are smaller than I expected - however, 2.54 mm pitch IS small - More an observation than a judgement.Happy prototyping!