Step 10: Programming

The Pingbot is not much more than a remote controlled puppet. It doesn't have any sensors and it can't track its own movement. It only does what the remote tells it to do. Because of this the program is limited in its options and uses only a few basic commands and some semi-tricky dance moves. I am not very experienced with programming these chips and I'm certain there are functions that I am unaware of. What little programming I have learned was from the PixAxe manuals and their website.

PicAxe Programming Editor, the software used to program the 08M2, is available FREE from the PicAxe website.

Serial Programming
To program a PicAxe chip via a USB port an AXE027 programming cable is needed. While designing the circuit I was working under the assumption that the 08M2 could be programmed with a direct connection to the USB port's data+ and data- pins. I thought I could skip the 027,  and would need only the Micro-USB connector to program the chip. After a few failed attempts at uploading the program to the bot, I did some testing/research and found out that the AXE027 cable contains a serial converter. I don't know the exact details of how this converter works, but It is necessary to program the PicAxe over a USB port.

It was far too late to go back and fix this in the design, everything had already been put together! Besides, there wasn't room to add a stereo jack for the AXE027 onto the circuit board. To program the chip I needed to make an adapter that could receive the stereo jack from the AXE027 and connect it to the Micro-USB cable.

I rummaged through my box of computer stuff and found a PS2 -USB adapter that I was not emotionally attached to. I cut it apart, removed the female USB connector, and wired that to a 3.5 stereo jack that I had left over from a previous project. The accompanying image details how this adapter was wired.

What the Program Does
The robot is controlled by a standard universal tv remote that I got for $5. The remote is set to the Sony television code, which is what the 08M2 is able to decode. When a button is pressed on the remote it transmits a code from its infrared LED. Meanwhile the 08M2 has been waiting for its IR receiver to pick up this transmission, and when it does it stores the corresponding button number into a variable. The PicAxe  checks that variable and runs the code that is associated with the received number. The program then returns to its start and waits for another command.

The 08M2s tune command is awesome. There are thousands of free, old cell phone ringtones that were made to be played on peizo speakers and these can be downloaded and programmed onto the chip. Inserting these songs is as simple as using the PicAxe Programming Editor's ringtone wizard to import the songs into the code. Each note of the song is represented by a number and they can be copied, pasted, and re-arranged to edit the songs. The command also has options for blinking an LED (the eyes) with the music.

I programmed a few of the buttons with songs, and a few others with random beeps. The beeps give the robot some cut little expressions that are fun to use when it bumps into things and such. More info on the tune command can be found here. This page was also very useful, as it shows what code# is used for which remote control buttons.

When one of the Volume + - or Channel + buttons is pressed the program turns on the appropriate motor for 100 milliseconds, then turns it off again. If that button is held down that bit of code repeats, effectively turning the motor fully on. The LED eyes are tied to this same button so that they turn on in synch with the motor. The eyes do blink each time the code repeats, but the motors do not stop long enough to affect movement.

Dancing Robots Have More Fun
The Pingbot can be programmed with dance routines using a mix of the tune command and motor control . The program turns on a motor (or both), plays a few notes, and then turns the motor off. Next the opposite motor is turned on, the next set of notes in the song are played, and the motor is turned off. When these moves are executed together there is no hesitation between the commands and the song plays seamlessly while the robot whirls around in different directions. This can be seen in the video on this Instructable's intro page.


<p>I have been kind of wanting to build this for more than half a year. Or is it a year now... I don't know how, and have very limited experience in the field. The most I have done is one of those robots on a platform that move when you move a remote. I did write the code myself though, with the help of my teacher. It was written in C, which of course would not work for this project. I am no longer in contact with the teacher that was going to help me with this, and there are no robotics teams near me currently. I was just wondering if anyone has any suggestions? </p>
<p>Oh and one more thing, do you think I can do this with an arduino mini or something instead of building my own circuit? Or is that a necessary part? </p>
<p>I'm not sure if there is a need really, although I have had a handful of students and teachers contact me looking to make their own versions for educational purposes.</p>
<p>The first road I would try would be to add a sound sensor. Then you could set up 3 IR/Sound beacons in a room. The robot would receive a light and sound signal from the beacon and measure the time between the IR and audio to determine distance.</p><p>www.bosswallpapers.com</p>
saya sudah mebuat ini tetapi saya bingung bagai mana cara nya saya untuk memasukan data program dan bisakah saya minta data untuk memprogram pingbot? makasih
<p>ean man i wish i had one</p>
<p>Its tremendous<br><br></p>
<p>I'm not sure if there is a need really, although I have had a handful of students and teachers contact me looking to make their own versions for educational purposes.</p>
<p>ean man i wish i had one</p>
clean man i wish i had one
thanks for sharing
I'm not sure if there is a need really, although I have had a handful of students and teachers contact me looking to make their own versions for educational purposes.
when suggesting scavenging from old appliances a picture of the component would be nice if only to save us some time.
that is so cool is this going to be on the market or is there even a need for this?
I'm not sure if there is a need really, although I have had a handful of students and teachers contact me looking to make their own versions for educational purposes. <br> <br>As for marketing, well, I'm learning about the process, but I'm certain that this will never be made into toy that your going to find at the store. However, the kit bundle version should be available soon; it has been submitted to Club Jameco and is making the final rounds now. <br> <br>Thanks for checking out the project, happy you liked it :)
yeah I thought it was neat
that looks AWESOME, Where did the idea come from?
Thank you Jenson that's great to hear :D <br>The idea came from all over the place. For the look of the robot, the movie &quot;Batteries Not Included&quot; had a major influence. As for the actual robot, I'd seen several of these little picaxe robots, such as the one by Mikey77 here on instructables, and wanted to make one of my own as a way to learn Picaxe and li-po battery charging.

About This Instructable




Bio: When I was young I took all of my toys apart just to see inside. Eventually I learned how to put them back together.
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