ATU100 (N7DDC) Case

thingiverse

Hi all, this is a simple and compact case for the fantastic ATU100 antenna tuner kindly made open source by N7DDC. I've provided two versions, for different antenna connector diameters, but also all source files so you can tweak to your needs. Parts list & links: * ATU100 Extended (7x7) PCB: available in kit form from eBay, Banggood and probably other places. But fully open source, with all details on the github: https://github.com/Dfinitski/N7DDC-ATU-100-mini-and-extended-boards And there is a Groups.io group here: https://groups.io/g/ATU100 * 0.96" I2C OLED Screen. Usually comes with the kit, but fairly common in the current Arduino world. https://ebay.us/kjzZ6z Recommend this item is sourced with the ATU kit- the firmware on the PIC16 needs to be told what screen it will be sending to. My first ATU100 was originally set up for a 16x2 display, so i'm waiting for a PICKIT programmer to change the firmware and get the display working. * Power switch. Sized for one of the 3/4" LED lit ones such as this: https://ebay.us/PUc3t6 * Push buttons (x3). For [T]une, [A]uto, and [B]ypass. I found some brilliant tiny momentary push buttons from CPC: https://cpc.farnell.com/multicomp/mc8ms9p1b05m1qe/switch-spst-off-mom-solder/dp/SW05796 * Antenna connectors of your choice. I have used both panel mount BNC and a panel mount BNC to SMA adapter in this case. I think the latter is better. This is why there are two case files provided- for the two different diameters of antenna ports. * DC power jack. Takes the typical ~8mm diameter power connector. * Fuse. I use a generic inline fuse holder inside the case- the PCB is offset to allow this to be slid down the side of the PCB. 500mA has proven to be totally adequate for the fuse rating for me. * Sundries; interconnecting wires, screws for the PCB, latch for the screen, foam chunk for pinning the screen in place. Printing Notes: * I printed the case and lid using PETG, and on 0.3mm draft settings. I printed the screen latch separately in 0.1mm layer height & 100% infill. * Supports are required for the holes in the case. * I would keep the supports away from the embossed text on the front and back of the case. The text has been chamfered to have 45deg slopes on all overhangs. * The latch pocket on the inside is also chamfered to have a 45deg lead in and does not need supports- they are tricky to pick out of the pocket. * Clean all holes out with a small drill bit after printing- use it liike a file