{"id":400,"date":"2021-11-28T15:40:41","date_gmt":"2021-11-28T15:40:41","guid":{"rendered":"http:\/\/www.thelemmingfarm.uk\/?p=400"},"modified":"2021-11-28T15:41:23","modified_gmt":"2021-11-28T15:41:23","slug":"remote-controller-test","status":"publish","type":"post","link":"http:\/\/www.thelemmingfarm.uk\/?p=400","title":{"rendered":"Remote Controller test"},"content":{"rendered":"\n

A few years back we bought a Pi Hut wireless controller<\/a> at the fantastic Raspberry Fields<\/a>, which I’m sad to say that despite the varied amount of buttons and joysticks it contains we haven’t used in a single project since.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n
\n
\n

The test setup looked like this. The Pi is connected to a USB hub containing a wireless mouse, keyboard and finally the Controller.<\/p>\n<\/div>\n\n\n\n

\n
\"\"<\/figure>\n<\/div>\n<\/div>\n\n\n\n

Following instructions from the Pi Hut page, it points the the Approximate Engineering\u2019s Python Game Controller<\/a> library built for a PiWars robot. Installation was simple so I headed over to the Simple Usage section to try things out and built some python to connect to the controller.<\/p>\n\n\n\n

\n
\n

Using some Python similar to the right built from the examples looked to be working, but didn’t seem to register any of the controller button presses. <\/p>\n\n\n\n

It also had the problem of not being able to escape and sleep obviously not being imported!<\/p>\n<\/div>\n\n\n\n

\n
from approxeng.input.selectbinder import ControllerResource\n\nwhile True:\n    try:\n        with ControllerResource() as joystick:\n            print('Found a joystick and connected')\n            while joystick.connected:\n                # Do stuff with your joystick here!\n                # ....\n                # ....\n\n                # If we had any presses, print the list of pressed buttons by standard name\n                if joystick.has_presses:\n                    print(joystick.presses)\n        # Joystick disconnected...\n        print('Connection to joystick lost')\n    except IOError:\n        # No joystick found, wait for a bit before trying again\n        print('Unable to find any joysticks')\n        sleep(1.0)<\/strong>\n<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
from approxeng.input.controllers import find_matching_controllers\r\nfrom approxeng.input.controllers import print_controllers\r\nfrom approxeng.input.controllers import print_devices\r\n\r\n\r\ndiscoveries = find_matching_controllers()\r\n\r\nprint_controllers()\r\nprint_devices()\r<\/code><\/pre>\n<\/div>\n\n\n\n
\n
In trying to figure out why it was connecting but not registering any key presses I looked to see what else it could be picking up.<\/p>\n\n\n\n
This seems to pick up a number of controllers \/ devices, so I can only assume the code picked the first one it found and this wasn’t the correct one. <\/p>\n<\/div>\n<\/div>\n\n\n\n
On the hunt for further examples to test led to the “Examples” section. One that jumped out and looked fairly simple was “Streaming Axis and Button Hold values”. I tried this and it worked!<\/p>\n\n\n\n
The only difference was the line:<\/p>\n\n\n\n
ControllerRequirement(require_snames=['lx', 'ly'])<\/code><\/pre>\n\n\n\n
which in fairness an early example in the simple usage section did list:<\/p>\n\n\n\n
        with<\/strong> ControllerResource(ControllerRequirement(require_class=DualShock3),\n                                ControllerRequirement(require_snames=['lx','ly'])) as<\/strong> ds3, joystick:\n<\/code><\/pre>\n\n\n\n
This allows it to pick the first device that has a left joystick. so adding this and rerunning now worked!<\/p>\n\n\n\n
pi@carpizero:~\/code\/TheLemmingFarm\/Code\/controller $ python3 checkbuttons.py \r\nFound a joystick and connected\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\nLeft stick: x=1.0, y=0.3850157346889374 Right stick: x=0, y=0\r\nLeft stick: x=0, y=1.0 Right stick: x=0, y=0\r\nLeft stick: x=-1.0, y=0 Right stick: x=0, y=0\r\n['r2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l1']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['r1']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l1']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l2', 'r1', 'r2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l1', 'r1', 'r2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l1', 'r1', 'r2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['l1', 'r1']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['r2']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n['select']\r\nLeft stick: x=0, y=0 Right stick: x=0, y=0\r\n^CStopping Joystick test<\/code><\/pre>\n\n\n\n
Now the comms and ability to read inputs has been proven the more advanced examples can be checked. To fit in with existing code Id like to use button call-backs and the failover example to reconnect if it drops out of range. <\/p>\n","protected":false},"excerpt":{"rendered":"
A few years back we bought a Pi Hut wireless controller at the fantastic Raspberry Fields, which I’m sad to say that despite the varied<\/p>\n","protected":false},"author":1,"featured_media":401,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,7],"tags":[],"class_list":["post-400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics","category-robot"],"yoast_head":"\nRemote Controller test - The Lemming Farm<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.thelemmingfarm.uk\/?p=400\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Remote Controller test - The Lemming Farm\" \/>\n<meta property=\"og:description\" content=\"A few years back we bought a Pi Hut wireless controller at the fantastic Raspberry Fields, which I’m sad to say that despite the varied\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.thelemmingfarm.uk\/?p=400\" \/>\n<meta property=\"og:site_name\" content=\"The Lemming Farm\" \/>\n<meta property=\"article:published_time\" content=\"2021-11-28T15:40:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-11-28T15:41:23+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.thelemmingfarm.uk\/wp-content\/uploads\/2021\/11\/20211128_133747.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"379\" \/>\n\t<meta property=\"og:image:height\" content=\"270\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"matt\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"matt\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400#article\",\"isPartOf\":{\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400\"},\"author\":{\"name\":\"matt\",\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/#\\\/schema\\\/person\\\/ad3da4bf1895ba680ee4c6a0cdcfe5c3\"},\"headline\":\"Remote Controller test\",\"datePublished\":\"2021-11-28T15:40:41+00:00\",\"dateModified\":\"2021-11-28T15:41:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400\"},\"wordCount\":331,\"image\":{\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/20211128_133747.jpg\",\"articleSection\":[\"Electronics\",\"Robot\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400\",\"url\":\"http:\\\/\\\/www.thelemmingfarm.uk\\\/?p=400\",\"name\":\"Remote Controller test - 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