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Here’s a cool video of optical recognition LEDs. Seems pretty easy to make, can you hack one?

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Here’s an update of controlling 3 stepper motors using a CUBLOC CB280 module. Although you can move the motors simultaneously, there are a lot of applications you can use it for.  Sorry about the video, my video camera needs head cleaning.

We’ve been messing around with some industrial stepper motors at work. These Xylotex stepper motors are pretty cool.

We have an example here for interfacing with some CUBLOC modules.

We got the 3-axis stepper kit so we will have a 3 stepper motor update soon too.

This is the best sniffer for embedded TCP/IP applications in my opinion. There a lot of options
such as HTTP filtering, UDP, TCP, DHCP, and you can also use it for capturing packets to break
WEP codes… (not that i recommend it.)

Here’s a 64KB Commodore PDA system that runs BASIC. Tight!

Here are a few pics of my own DTV Hummer project. I had an old PSOne LCD screen lying around and I thought I’d make a C64 laptop. Actually, it’s more like a C64 PDA! It measures 6.5 x 6 x 1.5 inches (15.5 x 16.5 x 4 cm) when closed. It can run from an AC wall adapter or 6 NiMH AA batteries. The keyboard is hacked from a portable folding keyboard for a Jornada PDA which outputs RS-232. I’m using a PIC 16F88 to decode the signals and re-encode them to PS/2 (that was an ordeal to figure out). The PIC checks to see if an external PS/2 keyboard is connected on power up. If one is hooked up, it will route data from that instead. There is an internal ampilfied speaker as well as connections for audio and video output on the back. There’s a serial connection for a disk drive and an SD card slot in the side. I also have a connection for a userport/joystick. The joystick in the picture is a hacked Atari keychain joystick. The mini joystick wasn’t in the original plan but after I accidentally discovered it on ebay, it seemed perfect.

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Here’s a cool little project for capturing mouse!

This project captures a mouse by having a solenoid (electromagnet) drop a bucket over the mouse. The bucket is triggered by the mouse interrupting one of the infrared emitter/detector pairs around the bait. The enclosure that holds the electronics is mounted directly over the bait. Ok, so the “bucket” is actually a semi-clear storage container. The clear container allows a person to see if a mouse was trapped when the container dropped.

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Here’s a nice little RC buggy for future reference on RC mods…

This was probably the most important thing to achieve. The R/C vehicle that I’m using has 2 servos, one to move the position of the front wheels and therefore controls steering and the other controls a mechanical speed controller (push it forwards and you go forwards, backwards and you reverse with an zone in the middle of not moving).

Servos are driven by a PWM signal which allows accurate positioning of the servo “arm”. Now I’m using a gumstix connex 200xm and a STUART waysmall board, the gumstix has 2 methods of producing a PWM signal, either through its hardware onto GPIO 16 (Jonathan Brandmeyer has a driver here however 16 isn’t avaliable on the waysmall board) or by the mpwm driver produced by Pascal A. Brisset which allows the signal to be produced on any GPIO.

I think this has been around but we’ve been thinking about making some homebrew PCBs, so…
This DIY is pretty good since it has lots of cool pictures… nice glove…

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Check out the update on CNC milling machine with cool software update with Mach3 CNC
software. Now Garrett’s CNC milling machine runs much faster with the Mach3!

We’ve been playing around with Mach3, which supports Modbus I/O. This example uses one
modbus output on a CUBLOC module to control the spindle motor through an SSR4. Cool dude…