Confused about how callbacks work? Check out this really neat example. def say_hello(value, callback): print value callback() def say_name(): print “Fra” say_hello(“ciao”, say_name) Ref: https://bytesforlunch.wordpress.com/2012/03/15/simple-callback-implementation-in-python/
This will be my last post on how to get wifi working on a raspberry pi because I’m going to buy the pi 3 from now on with inbuilt wifi. With a cheap as wifi dongle and changes in the OS from Wheezy to Jessie, getting wifi to work is a nightmare. I keep getting… Read More »
Windows + R, then: winver – will show you your windows version. shell:startup – will open explorer to the place where if you place short cuts to batch files, these will auto run on start up. netplwiz – will allow you to remove password on boot.
This post here got me started on the right track. Here, I specifically focus on the Arduino Due. Step 1: First connect your computer to the Arduino Due to the programming USB slot. The one closest to the power supply barrel. Connect the native USB to the raspberry pi. Step 2: Double check that the… Read More »
Here is the easiest and quickest way to get up and running with an Arduino Due on a Mac. Step 1: Plug the micro usb to the usb port closest to the DC power supply. This is called the programming port. (ref: https://www.arduino.cc/en/Main/arduinoBoardDue) Plug the other end into your Mac. Step 2: Download the Arduino software… Read More »
After arriving nice and early at 7:30am, I proceeded to screw all the face plates in, the power sockets and checked my motor control again. We then livened the board and tested the lights, and the sockets and then the motor control. The lights and sockets were fine. The motor control had a few issues.… Read More »
On Friday Umit finished his board in the morning and during testing had issues with his motor control. We ended up helping him troubleshoot and found that a wire was in the wrong place. It took about a hour to get it right after which he passed and we all helped him strip his board… Read More »
Andre our tutor was back today as we continued on our stage 3 board. It was not super difficult but was great having other electricians there to ask questions and observe how they do things also. There are lots of different ways to wire it that blindly copying will get you into trouble. You have… Read More »
This morning the tutor was away so we had a stand in who had to manage 4 groups. We started a bit late but teamed up with 2 others who were doing their stage 3 work. We were suppose to work on practicing bending conduit but we decided to work on the stage 3 board… Read More »
This morning we started with a 3 phase induction motor. The first thing was to identify the terminals by measuring the resistance and labeling the wires. 294 Ohms was the winding resistance. We then wired it in star configuration was meant linking V2, U2, W2 together. Star provides lower voltage which means lower start current.… Read More »