This is a custom enclosure for the Frequency Counter kit sold by RFCandy.Biz. A link to the kit can be found below. While I designed the enclosure for the kit I purchased and freely share the files, I am not associated with RFCandy.Biz in any way.
The frequency counter consists of an Arduino Uno (NOT included in the kit), daughter board and display board. The enclosure is designed so the electronics sit on posts inside the enclosure. The lid holds the boards in place. It provides access to the 3 coax inputs on the left and USB & Power inputs on the right. On top you'll find the main display, a viewport for the Run/Count/Error LEDs, and a Lo/High switch for selecting which input is used. The front hosts a slot where you can use a toothpick or other nonconductive object to slide the VCTXO switch between Ext & Int.
The 2 pieces can be printed with no supports, oriented as they are provided in the STL files.
The lid can be fastened using 4 each #2 wood screws or M2 x 10mm self tapping screws.
The enclosure was designed to be as small as possible so you should use a Micro Toggle Switch for the Lo/Hi switch. A larger switch might not fit. A URL for the one I used is provided below. This toggle switch is NOT included in the kit.
Frequency Counter: https://rfcandy.biz/shop/index.php?route=product/product&product_id=358
Lo/Hi Toggle Switch: https://www.amazon.com/dp/B075RDYMQQ?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1
The author marked this model as their own original creation.