Nothing new here, just my personal notes with the LEGO Hub from 51515 MINDSTORMS Robot Inventor Set.<\/p>\n\n\n\n
Most of it based on this post by Jason Jurotich<\/a>. <\/p>\n\n\n\n I have a LEGO 51515 set, thanks to the ROBOTMAK3RS community<\/a> (and still not sure yet if I am willing to pay so much money for this set). I also have a Ubuntu Linux laptop. It will have to work – last time I revived a Windows 10 virtual machine it took me a whole night just to update it in order to install LEGO App. No way!!<\/p>\n\n\n\n So tanks to Jason post I can connect my laptop to the Hub:<\/p>\n\n\n\n this gives me a ‘\/dev\/rfcomm0’ serial device and I can access the REPL environment in 2 different ways:<\/p>\n\n\n\n directly through a terminal client like ‘picocom’:<\/p>\n\n\n\n with a more proper tool like ‘rshell<\/a>‘:<\/p>\n\n\n\n When accessing the REPL, the hub is sending values so we need to Ctrl+C to get the prompt.<\/p>\n\n\n\n I found out that accessing the REPL through ‘picocom’ lead to strange behaviors afer a while (like commands being executed but not returning to the prompt and after a while not being able to access again, like if the Hub was rebooting immediately after accessing it) so I am now using ‘rshell’.<\/p>\n\n\n\n I also installed Adafruit ‘ampy’ from pypi. This way I can send and execute a micropython script from my laptop without accessing the REPL:<\/p>\n\n\n\n But since I know nothing about LEGO micropython environment I will use REPL a while more (before flashing Pybricks on it and probably forgetting LEGO firmware like I did with MINDTORMS EV3 original application once I discovered ev3dev).<\/p>\n\n\n\n When accessing the REPL environment this is the welcome message:<\/p>\n\n\n\n of course ‘hub.info()’ and ‘hub.status()’ only work after<\/strong> we ‘import hub’ library – something probably obvious for someone used to (micro)python and REPL but not so obvious for newcomers.<\/p>\n\n\n\n Other important methods in this library<\/p>\n\n\n\n ‘hub.battery.info()’:<\/p>\n\n\n\n ‘hub.repl_restart()’ – I had used this method a few times today… and I hate reboots!<\/p>\n\n\n\n ‘hub.power_off()’<\/p>\n\n\n\n So lets find out if I can make Charlie play the drum with micropython.<\/p>\n","protected":false},"excerpt":{"rendered":" Nothing new here, just my personal notes with the LEGO Hub from 51515 MINDSTORMS Robot Inventor Set. Most of it based on this post by Jason Jurotich. I have a LEGO 51515 set, thanks to the ROBOTMAK3RS community (and still not sure yet if I am willing to pay so much money for this set).I … Continuar a ler “Linux and the LEGO Powered Up MINDSTORMS”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[1],"tags":[],"series":[],"class_list":["post-1709","post","type-post","status-publish","format-standard","hentry","category-sem-categoria"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2Mhyv-rz","_links":{"self":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/1709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/comments?post=1709"}],"version-history":[{"count":0,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/1709\/revisions"}],"wp:attachment":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/media?parent=1709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/categories?post=1709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/tags?post=1709"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/series?post=1709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
I have an Android Lenovo tablet and an Android Samsung phone. Installed LEGO MINDSTORMS App on both but only can managed to use it on the phone – the tablet doesn’t get Activities so I could not even make Charlie play the drums.<\/p>\n\n\n\nsudo rfcomm connect hci0 A8:E2:C1:96:5B:9A<\/pre>\n\n\n\n
picocom \/dev\/rfcomm0 -b 115200<\/pre>\n\n\n\n
rshell -p \/dev\/rfcomm0 repl<\/pre>\n\n\n\n
ampy --port \/dev\/rfcomm0 run test.py<\/pre>\n\n\n\n
Welcome to MicroPython!\n For online help please visit http:\/\/micropython.org\/help\/.\n Quick overview of commands for the board:\n hub.info() -- print some general information\n hub.status() -- print sensor data\n Control commands:\n CTRL-A -- on a blank line, enter raw REPL mode\n CTRL-B -- on a blank line, enter normal REPL mode\n CTRL-C -- interrupt a running program\n CTRL-D -- on a blank line, do a soft reset of the board\n CTRL-E -- on a blank line, enter paste mode\n CTRL-F -- on a blank line, enter filetransfer mode<\/pre>\n\n\n\n
>>> hub.battery.info()\n{'temperature': 23.8, 'charge_voltage': 7591, 'charge_current': 251, 'charge_voltage_filtered': 7583, 'error_state': [0], 'charger_state': 0, 'battery_capacity_left': 80} <\/pre>\n\n\n\n