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Photo by Brian Kronz<\/dd>\n<\/dl>\n<\/div>\n
The Arduino code is pretty simple, using Serial.read to interpret single characters as commands for controlling the motor shield. “f” means forward, “b” means back, “s” means stop. 1-9 sets the speed. \u00a0You’ll also need to install the\u00a0 AFMotor \u00a0library<\/a>.<\/p>\n
Program the aalegotrain.ino sketch from here:\u00a0 https:\/\/github.com\/wyolum\/alamode\/tree\/master\/examples\/train_demo<\/a><\/p>\n
You can either do this with an FTDI cable on another computer, or directly with the\u00a0 Arduino IDE on the Raspberry Pi<\/a>.<\/p>\n
The ala-modey part of this is to use the AlaMode to do the controlling motor bit. The Raspberry Pi will control the train through a web interface.<\/p>\n
Install \u00a0lighttpd on the Pi (sudo apt-get install lighttpd) and put the web files from the example into \/var\/www.<\/p>\n
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photo by Drew Fustini<\/dd>\n<\/dl>\n<\/div>\n
It’s a little slow because it’s a simple CGI script (spins up a whole process with each request.) A python script interprets button presses on the web page, and uses pyserial to send the characters to AlaMode.<\/p>\n
Drew Fustini of Element 14 did a\u00a0 great blog post<\/a>\u00a0on our demo.<\/p>\n
Here’s a video he posted:<\/p>\n
[youtube]http:\/\/www.youtube.com\/watch?fv=y-9g_mfdFhc<\/a>[\/youtube]<\/p>\n
If you have any questions, join the conversation at the \u00a0Wyolum forums.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Update!: You can now\u00a0buy AlaMode at Seeedstudios Here’s an example of using the AlaMode with the Raspberry Pi. We had a great time demoing the AlaMode at MakerFaire. We got invited to demo in the MakerShed, because …. Surprise! MakerShed … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,29],"tags":[],"class_list":["post-1059","post","type-post","status-publish","format-standard","hentry","category-alamode","category-a-la-mode-examples"],"_links":{"self":[{"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/posts\/1059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/comments?post=1059"}],"version-history":[{"count":5,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/posts\/1059\/revisions"}],"predecessor-version":[{"id":1077,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/posts\/1059\/revisions\/1077"}],"wp:attachment":[{"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/media?parent=1059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/categories?post=1059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wyolum.com\/wp-json\/wp\/v2\/tags?post=1059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}