After my earlier blog post from today, I wanted to verify that I could read single bytes of data from other sensors on the Grove Beginner Kit for Arduino. The next target? The DHT20 sensor. According to the data sheet, I should be able to be able to request a status byte and that that […]
A lot of Arduino projects are meant to always be attached to a PC, transferring data back and forth between the Arduino and the PC. That's why Firmata, a program that sits on the Arduino and allows a program on your PC to remotely read from sensors and buttons and transmit to things like speakers […]
On a recent final exam I had students create a method that could interleave two halves of an array. The original exercise came from a Schaum's Outline book. If you're not careful, by passing values by reference you can have the student's solution pollute the original input test value. To solve this in Java you […]
The following is an example of a main project for the EECS 1021 course. While I think that it's important to provide concrete examples it's also important not to provide examples that are trivial to copy and, thus, reduce the effectiveness of the example as a learning tool. As such, I'm providing this example using […]
It's important to create test frameworks for your programs. In Java we use the jUnit system to do so. Here is an example of setting up a unit tester to make sure that that a method returns the values it's supposed to. First, let's look at the method. I'm using it to convert values that […]
[updated for Windows ARM users] For students attempting to get the USB drivers working for the Grove Beginner Kit for Arduino please follow these instructions: First: make sure that you're not using the white USB cable. Use a different one. Second: install the USB driver for the board. a) Go to Seeed Studio's wiki: https://wiki.seeedstudio.com/Grove-Beginner-Kit-For-Arduino/ b) […]
The following is an example of the files needed to create a working Virtual Programming Lab exercise for Java: vpl_run.sh vpl_evaluate.sh MainClass.java StudentSolution.java TeacherReferenceSolutions.java TheTestClass.java With this you can evaluate one student submission against a single reference solution. Two methods are run: one is the student's method and one is the teacher's method. The output […]
Before we started using Firmata and Firmata4j in the EECS 1021 class, Richard Robinson and I put together lab activities that used the Fazecast jSerialComm library paired with customized Arduino serial code. The approach is summarized in three videos: Video 1: The Plan for Sending Data to an Arduino We need to send information, in […]
In the EECS 1021 class here at York University the students learning about object oriented programming in an engineering that uses sensors and actuators. We use Arduino devices that host a special pre-made firmware called Firmata to do this in order to unburden the students from the C++ coding that would otherwise be required on […]
As with earlier posts for Matlab, I'm putting together a set of exercises for automated student testing in introductory programming classes, but this time for Java. The idea is to integrate this into Virtual Programming Lab or secure lab tests. In a future post I'll do a VPL version of this, but for now this […]