Making Robot Friends with RemoTV

Years ago at Maker Fair I saw a person followed by a rather impressive robot that seemed to have a mind of it’s own. Later I found out that the robot was being controlled by people through the internet using a site called LetsRobot. While that project is no more, that same person, Jillian Ogle, that I met is the creator of it’s successor RemoTV.

Continue reading Making Robot Friends with RemoTV

Function for rotating the TouchScreen matrix to match Display orientation.

Ok, so I ran into an issue when I rotated Display that repositioned the Button images but not the touchscreen coordinates. So the button hotspots did not remap. Thankfully I fingered out a way to recalculate the screen touch coordinates so that they line up with the Display orientation.

Continue reading Function for rotating the TouchScreen matrix to match Display orientation.

Wireless NAT server E-ink badge with Apache, PHP, SQL, Media Wiki, and MQTT

If you can not connect MediaWiki with your MySQL password and user name, do the following steps.

sudo /etc/init.d/mysql stop

Once MySQL has stopped, run:

sudo mysqld_safe --skip-grant-tables &

When MariaDB is loaded, run the following command but replace username and password with one of your choosing.

GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';

Or try to reset the root password:

sudo /etc/init.d/mysql stop
sudo mysqld_safe --skip-grant-tables &
sudo mysql -uroot

when MariaDB is loaded, run the following commands but replace newpassword with the one you want.

use mysql;

press enter, then:

update user set password=PASSWORD("newpassword") where User='root';

press enter, then:

flush privileges;

press enter, then:

quit

press enter

Now stop and restart MySQL

sudo /etc/init.d/mysql stop
sudo /etc/init.d/mysql start

Try logging into MySQL

sudo mysql -u root -p

At this point you may have to add a new user if the root password will not work.

After logging into MySQL, like before, run this command:

GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';