Hacking Roomba - Tod E Kurt Part 2 pdf

... Sensors The most commonly used internal sensors are the wheel-drop sensors. All three wheels have a microswitch that detects when the wheel has extended down. In the case of Roomba, these wheel drops ... interrupter. An optical interrupter is a simple LED and photodetector pair: the LED shines and the photodetector detects the LED’s light. When something (an interrupter) is inserted between...

Ngày tải lên: 10/08/2014, 04:21

... the Roomba into the +5 VDC needed by the RS -2 3 2 transceiver. The RS -2 3 2 transceiver converts the 0-5 VDC signaling used by Roomba into the + /-1 2 VDC used in RS -2 3 2. And the LED circuit is there to ... cable lines, generally the longer the cable, the larger the capacitors will need to be. And in RS -2 3 2, long means several hundred feet, not the 10-feet cable you’ll be us...

Ngày tải lên: 10/08/2014, 04:21

... complex techniques like soldering printed-circuit boards or surface-mount devices, although the techniques presented here can carry over to them. When you feel like you are ready to tackle more ... The snipped-off portion of the leads make great jumpers, as shown in Figures A-15 and A-16. Using the needle- nose pliers, bend one of the leads into a U-shape to match the distance you need ... co...

Ngày tải lên: 10/08/2014, 04:21

... Data Kurt, Tod E. , 1969– Hacking Roomba / Tod E. Kurt. p. cm. ISBN-13: 97 8-0 -4 7 0-0 727 1-4 (paper/website) ISBN-10: 0-4 7 0-0 727 1-7 (paper/website) 1. Robots—Programming. 2. Roomba vacuum cleaner. ... vacuum cleaner is very inexpensive at under $300 for even the most expensive Roombas and $150 for the least expensive. The cheapest new Roombas can be found...

Ngày tải lên: 10/08/2014, 04:21

... can minimize the number of wires needed to solder. Figure 4-5 shows one possible layout, with the BlueSMiRF plugged into the receptacle to gauge the layout. Notice that the header receptacle has been ... the differential gearing used in a car, but instead of one source of power divided between two wheels with gearing, both wheels are powered independently. By having both wheels powered, the...

Ngày tải lên: 10/08/2014, 04:21

... value in the sensor data is the difference in the distance traveled by each wheel. Specifically, it is the right wheel difference minus the left wheel difference. This difference describes a ... the center point between the two wheels. It’s as if the wheels are moving partially along a circumference determined by the distance between the wheels. If this sounds a lot like that millimetersPerDe...

Ngày tải lên: 10/08/2014, 04:21

... accompaniment to the melodic lead of the beeper. Piezo Beeper The sound-generating device that plays the Roomba tunes is called a piezo beeper. The beeper is similar in function and sound to most other ... noise. Piezo speak- ers are also used as the tweeters in some audio speakers. The piezo crystals can also be used in the opposite way. If you flex or squeeze a piezo (from the greek pieze...

Ngày tải lên: 10/08/2014, 04:21

... chapter are the SitePlayer Telnet by NetMedia and the Lantronix XPort. There are many others out there, and they’re getting smaller all the time. F IGURE 1 1-1 : Various embedded Ethernet devices Parts ... to their device over the Internet. Figure 1 1-1 shows a few of these embedded Ethernet devices designed to add TCP/IP and Ethernet capability to an existing device. The two devices focu...

Ngày tải lên: 10/08/2014, 04:21

... her coffee maker on the Net. The tools and techniques learned for a wired network adapter carry over to a wireless one. For a mobile device like Roomba, it makes less sense because the cable ... an embedded Internet device server to an existing system. Adding Internet connectivity to stationary domestic objects with Ethernet is relatively cheap and simple. Everyone should experiment ... (WiM...

Ngày tải lên: 10/08/2014, 04:21

... then you need to purchase a PIC programmer to burn the chips. And even when you have it all hooked up, the cycle time between write- compile-burn-use is long because it doesn’t work as seamlessly ... with BS2 inserted Giving Roomba a New Brain and Senses T he projects presented so far have all been based on having the new brains of Roomba located remotely to it. From an RS -2 3 2 serial t...

Ngày tải lên: 10/08/2014, 04:21