[Utpal Solanki] wanted to do some text chatting from the comfort of the couch. He built this wireless chat client that he calls Chatbox using a microcontroller, a character LCD screen, and a keypad that he built himself.
The device communicates via an Infrared emitter and receiver. It pairs up with an Arduino using an IR shield that [Utpal] built. The handheld unit flashes a pair of white LEDs whenever it receives a message from the Arduino. You can then hit the Inbox button and scroll through to read what was received. To reply just type on the keypad the same way you would with a cellphone, then hit the send button to shoot that message back to the Arduino.
On the computer side of things the messages are being relayed to and from the Arduino over a USB connection. Early on in the video demonstration (embedded after the break) [Utpal] shows his Chat Box program communicating via the handheld unit in the same way that other messenger programs work.
Looks to us like he’s built his own non-pink version of what the IM-ME was originally intended to do.
Continue reading “Chatbox wireless IM client”
[Travers Buda] is giving new life to his abandoned childhood toys. He cracked open a set of Family Radio Services radios he had received for a birthday which work up to 2 kilometers apart. With just a bit of extra circuitry he was able to get them to act as wireless modems. The system functions but it looks like it would benefit from some more refinement, including error correction. In the end [Travers] manages to send and receive ASCII based messages at a whopping baud rate of 10.
Anyone who has tried their hand at RPG Maker 1 (or any text input with a controller) knows how difficult it can be typing long paragraphs into the console. [Thutmose] is here to save the day with Kupid 1.0 (2.0 in production). A PICAXE takes ps/2 keyboard input and converts it to a series of d-pad button presses for PS1 and PS2 controllers, providing quick data entry compared to the previously monotonous task.
We’re happy to learn that the source code and hardware is released, meaning it has the potential to be easily adapted to any controller/console.
This is an interesting little toy. A tiny board that can display text on an oscilloscope. The components, or rather just component, is a PIC16F628A. Aside from a power supply, that’s it. It can display 10 characters at a time and, as you can see above, scroll them as well. We don’t really know of a practical use for this, but it would make a nice practical joke tool. If you want some more complicated oscilloscope effects, check out Tennis for Two.