Shoe string engineering http://jattie.com/ 2026-05-14T19:21:29+00:00 http://jattie.com/ http://jattie.com/_media/wiki/dokuwiki.svg text/html 2024-02-18T19:54:37+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/anemometer?rev=1708286077&do=diff Anemometer Calculating wind speed I have a three cup anemometer with half spherical cups of 80mm diameter and the cup canters are 155mm from rotation point. if the device turns and 60 rpm, what is the resulting wind speed? To calculate the wind speed based on the given information for your three-cup anemometer, you can use the formula: text/html 2019-03-23T12:49:16+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/axes?rev=1553345356&do=diff Planning Throwing Axes Material Specifications Chemical composition Chemical componentPercentage C 0.65-0.75 Cr 16.00-18.00 Mo 0.75 Mn 1.00 P 0.04 S 0.03 Si 1.00 Material Grades Standard AFNORZ70CD14*DINX65CrMo14 text/html 2023-02-21T09:31:56+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/cnc_router?rev=1676971916&do=diff 4' x 8' CNC Router table The goal of this project is to build a vertical router table that can cut a standard 4' x 8' sheet using generally available hardware from the 3D printing industry with open source software and drivers and publish a complete set of instructions and bills of materials for any enthusiast to complete the project in a similar fashion. text/html 2023-03-21T09:28:42+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/pimail?rev=1679390922&do=diff Mail on a Raspberry Pi <https://www.makeuseof.com/make-your-own-raspberry-pi-email-server/> text/html 2023-11-06T22:41:01+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/rainmeter?rev=1699310461&do=diff Tipping bucket rain meter Rain meter calibration process text/html 2023-04-03T12:41:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/rctrainer?rev=1680525662&do=diff 3D Printed RC Planes This section is the reference page for my 3D printed RC trainer plane. The idea began months ago when I stumbled upon this article on intructables on building a RC DHC-2 Beaver. I did a decent amount of work, but did not particularly like the accuracy of my hot glue gin process and the even weights I achieved with this approach. In the process of working with the concepts and trying to learn more about the technicalities of building RC planes, I found this text/html 2025-04-27T12:51:34+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/weatherstation?rev=1745758294&do=diff Weather Data This page is dedicated to my personal weather data collection application development. The project was started as a digression to determine the wind speed available in my garden in order to determine the available power to drive a wind turbine. text/html 2019-05-11T09:20:26+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/websocket?rev=1557566426&do=diff nginx websockets #this where socket io will be handling the request location /socket.io/ { proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade"; proxy_pass "http://localhost:8000/socket.io/"; } text/html 2023-09-30T13:20:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://jattie.com/projects/wind_turbine?rev=1696080054&do=diff Parts * 2 x 35mm bearings