This is a scale mock up of our spider bot.

In the Final rendering however, lego gears will  gear down the servos to a 4:40 ratio, allowing for the linkages to run up to 250 rpm's. To connect the gears, a custom belt could be printed using flexible medium, other wise a vacuum cleaner belts come in a variety of sizes and tooth shapes and are a cheap alternative.  

Evan B. (7 hours)

 

For the spiders legs, there will be two servo continuous motors moving simultaneously. The parts are not available, but this is a demonstration of the source of motion. This was programed through the Arduino without using the BLE Shield 2 and it has the motors in parallel circuits.

Harry V. (3 hours)

BLE Shield 2

This is the BLE Shield 2. It has 4.0 Low Energy. It can be controlled with Arduino pins with a compatible Andriod or IOS device.  The Shield is able to use mobile devices as a gateway. It will be used as a blue tooth connector for the Spider Bot.

Written by: Harry V.

Parts research and order: Evan Batterman (2 hours)

Week 3 Update

This is the final Solid Model of our working project I made up in solidworks. Now we will move onto assembly as soon as fabrication is complete.

Seamus Beirne (8 hours)

Week 2

Week 2 Update

We have determined the specific parts required for this project. SpringRC SM-4303R continuous rotation servos will be used to power our machine. For our Bluetooth control we will use the Maker Shed B.L.E. 2.0 Bluetooth shield. Due to its low cost, proven support for many devices and relatively simple coding.

To power the servo's I made a whopping 7.2V 5200 mA lithium ion battery that I repurposed from a laptop.

 













Below is a scale mock up of the platform complete with powered components.

~Evan B (platform and battery 3 hours)

This is the led lights that will be connected to the acrylic legs. There is a microphone sound component that will be attached to the spider that will intake frequency to the led's. The microphone has built-in resistors. Think of it as an equalizer.

~Harry V. (4 hours)

meeting included: Evan, John, Seamus and Harry (3 hours)

Week 1 Update

We have decided to build a blue tooth controlled spider-bot that can be controlled via an app which can be run on android devices. Either a BTM-222 or HC-06 will receive the Bluetooth signals from the android device.

Mechanism

Klann R&D, 2009, www.mechanicalspider.com

To provide motion and direction to the machine two sets of Klann linkages, one on each side will be used. Two continuous revolution servos will provide power to each linkage. The speed of each motor will be independently controlled so that our spider will have the ability to turn in place and while it's walking. Servo's will be used in place of DC motors because of their characteristic simplicity, in programming and in wiring for this case. The on board electronics will all be powered by a custom rechargeable battery pack, the voltage for which will be between 3-6V and will be determined after further R&D.



Materials
The linkages will be laser cut from acrylic so that the more costly 3D printing material can be saved to make more complex parts. The linkages will be mounted to the "torso" of our spider, a simple platform made of balsa wood or acrylic which will hold its "brain", the arduino, bluetooth module, power source and motors.

Written by: Evan Batterman

Meeting Included: Evan, John, Seamus and Harry (3 hours)

Hello World!

Blogspot set up by Evan Batterman (1 hour)