I found the code and schematic by Joe Grand to interface a Parallax Propeller with the Gameboy Printer. I had an extra WiiChuck adapter that I thought would work with the Gameboy Link Cable, but I had to sand down both edges of the adapter so that it would fit. I also had to cut a trace and solder it to another pin.
The Propeller 2 is a general-purpose 32-bit microcontroller with 8 symmetric processors called “cogs.” Each cog has 512 longs (2 KB) of memory from which it executes instructions. Each cog shares a 128-bit data bus to a central “hub” which has 126 KB of RAM and 2 KB of ROM. Most instructions execute in a single clock cycle, with certain math intensive operations taking up to 31 clock cycles to complete. The hub allows each cog round-robin access to the main hub RAM; depending on the hub’s access window relative to the cog, access to hub RAM can take up to 7 clocks (if the access window was just missed) or as little as 0 clocks (if the cog is next in line for the access window). Additionally, the developer has the ability to set a one-time settable encryption key in the chip to protect code downloaded to the chip. On system startup the chip will use this protected key decrypt the encrypted program that is stored externally in non-volatile EEPROM/FLASH. The encryption key is not accessible by any user code.
Here’s an Internet enabled Christmas tree ornament that grabs updated stock quotes using a Propeller Platform USB. Gadget Gangster writes…
The Tannenbaum Ticker is a Christmas tree ornament that changes color based on how your stocks are doing.
US and international stocks, commodities, and bonds can be tracked, including market-wide and industry indexes Trade data is polled every 30 seconds during the trading day. The ticker goes from dark red ( > 4% drop from open), to green (within 0.2% of open), to blue ( > 4% increase from open).
Rudolph, the email reading reindeer, uses a Propeller Platform USB to announce when you’ve got a new email and who sent it. Gadget Gangster writes…
How’s it work?
Rudolph regularly connects to your email server via POP, logs in, and checks the number of emails in your inbox. If you’ve got a new email, it triggers an animation on the stuffed animal, retrieves the name of the sender and plays it back.
A Propeller Platform USB runs everything, using an E-Net module to handle the Internet connection. The ‘Text-to-Speech’ engine also runs on the Propeller; It’s really a text-to-phoneme engine, but works well enough to read the name of the sender.
What about reading something other than email?
Rudolph can tell you the weather, read a sports score, or blink when you get a tweet! I’ll show you how to use any data that’s available on a webpage in your own project.
Assembly instructions and code on their site. Instructions also include a cool Umbrella Alarm.
Want to add audio and lighting effects to your R/C car? The R/C Animator uses a Propeller Platform USB to read servo signals and play special effects. Gadget Gangster writes;
R/C Animator triggers effects based on the position of the servos in your vehicle. So, you can trigger the playback of a rumbling V8 when the throttle servo opens up. Or you could connect a spare servo channel to the R/C Animator to turn on an LED ‘light bar’ and play a siren. Effects include;
Up to 32GB of audio samples can be stored and played back in CD quality stereo. An onboard audio amp will drive speakers up to 1/4 Watt.
Up to 25 LED’s can be turned on, blinked, or faded.
Secondary servo movements
Multiple servos can be directly controlled by R/C Animator, so a single wireless channel can trigger secondary servo animations
R/C Animator is designed to chain and combine these effects.
Okay, it’s actually a recorder, but this project will allow it to make sounds like a flute, recorder, or even weird space noises. It uses a breath ‘blow’ sensors and a Propeller Platform running SIDcog for the sound.
You’ll also have a choice of converting the instrument to become fully electronic, or adding synth features to the existing instrument.
Toilet Buddy uses a Propeller Platform USB to remind you when the seat is up, when you left the lights on, and it plays a ‘courtesy flush’ sound. Source code and circuit on Instructables. Instructions also include how to re-purpose Toilet Buddy as Grandfather Clock;
4 Amps (2 amps x 2 motors) via a L298 motor driver
4 ADC’s (Analog inputs) via a MCP3204 chip
4 Servos with connections to power and with current-limiting resistors on the signal wires
Video-out via a standard RCA jack
Connections for an X-bee
Connections for a BlueSmirf Bluetooth unit
he 444-AVXB was designed with the robot hobbyist in mind. Connections are available for just about every “standard” thing you would find on a small to medium-sized robot. A hefty motor driver handles decent-sized motors with nice screw terminals for both power and motor connections. (4) 3-pin connections are provided for servos which can be powered by either external power or on-board power. An ADC chip allows for 4 analog inputs to be read, great for analog sensors, pots, LDR’s etc.
Video-out takes advantage of the awesome video capability of the prop and can be connected to any TV with a “video-in” and/or many of the cheapie 7” LCD screens (found on Ebay). Audio is just that, audio out with the circuit being the same as can be found on many other propeller products. Pin 15 has been brought forward as well for a Ping))) sonar unit. Finally, there is room and connections for EITHER an X-bee or Bluetooth module. All unused pins are accessible via female headers.
Propeddle was initially intended as a replica for the early Commodore computers (PET-2001, CBM-4032 and CBM-8032) because those happen to be the first computers I ever worked on. But because of the way it’s designed, it’s really a universal platform to (re-)create many types of 6502-based computers, or design a new one. In many cases you won’t even need additional hardware (besides a Gadget Gangster Propeller Platform board): the software on the Propeller determines how the computer behaves, and it can emulate other hardware such as storage, by using the EEPROM or the serial port to a PC or other device.
TetraProp is a Propeller Platform board with four onboard Propellers. Steve writes…
TetraProp is a PropellerPlatform compatible board with four Propellers. It is designed for distributed parallel procecessing experiments. Each Propeller Island is an individulal unit with headers for user connections.
Headers allow interconnections for user’s design
Four independent Propeller islands on one board
Propeller and EEPROM are SMD
Other components through-hole for easy modification
Jumper selectable reset type
Socket for crystal
PropPlug header for every Propeller
All stacker pins on 0.1″ grid for connecting to a protoboard.
dig into the audio abilities of the Propeller Platform with the creation of your own on-screen synthesizer, starting with the basics of sound generation, then into a fully functional instrument capable of creating funky, eight-bit sounds.
Mad Scientists is a new show on the National Geographic channel, and Steve is featured in the episode ‘Robot Genius’. He writes…
Each episode highlights the work of an individual maker/inventor. In my case, the show focuses in on my collection of robots that I have built over the past several years for articles that have appeared in Robot Magazine. There is a “reality” spin to the show where the inventor is challenged to build something with the show’s host (John Bowler) in just two days. For the grand finale the “build” is revealed to an audience of friends and family and put to the test. For me the challenge was to build a robot that could play the basketball game of PIG. You’ll have to watch the show to see how well we did.
All the robots you will see in the show are based on the Parallax Propeller. You may catch a glimpse of a Propeller Proto Board as well as some screen shots filled with Spin code.
transforms the Disney monorail playset into a realistic monorail simulation. An amazing amount of technology has been packaged into a tiny space and coupled with wireless mesh networking to produce a model that is authentic in every detail of its operation.
Custom designed circuit board with SMT components
8-core Parallax Propeller processor running at 80 Mhz