tag:blogger.com,1999:blog-4536636212142504599.post6477642711178469440..comments2023-02-11T08:31:10.251-08:00Comments on EV3 Direct Commands: Lesson 9 - Stop and ContinueChristophhttp://www.blogger.com/profile/03757631301217576260noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4536636212142504599.post-89600556712349179892019-07-21T07:32:43.621-07:002019-07-21T07:32:43.621-07:00Hi Ilai,
maybe you did not create a udev rule for ...Hi Ilai,<br />maybe you did not create a udev rule for your EV3 device. I mentioned it in chapter 1.<br /><br />On my ubuntu system I created a file /etc/udev/rules.d/90-legoev3.rules with a single line of code:<br />ATTRS{idVendor}=="0694",ATTRS{idProduct}=="0005",MODE="0666",GROUP="christoph"<br /><br />Then I did restart the udev service with:<br />sudo systemctl restart udev<br /><br />This allows all members of group "christoph" to communicate with EV3 devices.<br /><br />I hope, this helps.<br /><br />Kind regards,<br />ChristophChristophhttps://www.blogger.com/profile/03757631301217576260noreply@blogger.comtag:blogger.com,1999:blog-4536636212142504599.post-55754919673048562532019-07-14T07:02:27.151-07:002019-07-14T07:02:27.151-07:00Hi,
While connecting my EV3 via usb I get the fo...Hi, <br /><br />While connecting my EV3 via usb I get the following Error:<br /><br />Traceback (most recent call last):<br /> File "/home/ubuntu/Desktop/ev3/newproj/import.py", line 3, in <br /> my_ev3 = EV3(protocol=USB, host='00:16:53:63:0F:CB')<br /> File "/home/ubuntu/Desktop/ev3/newproj/ev3comm/ev3.py", line 243, in __init__<br /> self._connect_usb(host)<br /> File "/home/ubuntu/Desktop/ev3/newproj/ev3comm/ev3.py", line 366, in _connect_usb<br /> mac_addr = usb.util.get_string(dev, dev.iSerialNumber)<br /> File "/home/ubuntu/.local/lib/python3.6/site-packages/usb/util.py", line 314, in get_string<br /> raise ValueError("The device has no langid")<br />ValueError: The device has no langid<br /><br />What should I do?<br /><br />Thanks in advance,<br />Ilai Segev.<br />ilai segevhttps://www.blogger.com/profile/16991594220219730897noreply@blogger.comtag:blogger.com,1999:blog-4536636212142504599.post-5053777689135855312019-03-04T10:45:03.376-08:002019-03-04T10:45:03.376-08:00Thank you so much for your blog, Christoph!
I am t...Thank you so much for your blog, Christoph!<br />I am trying to send direct commands to ev3 from iOS device. I am using a simple terminal app and I was able to send "ET /target?sn=" and get a respond from ev3 ”Accept:EV340”. As I understand it means that a WiFi connection is established between the host device and the EV3 brick. But after that when I send any direct command nothing happens. No respond. I tried 0x|06:00|2A:00|00|00:00|01| and some other commands. May be I am using a wrong format? What command can send to check if it works?<br />Would you please help me?<br />Thanks!<br />Anonymoushttps://www.blogger.com/profile/07560594995307051131noreply@blogger.com