Hacking Roomba - Tod E Kurt Part 10 pot

... 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 ... RCTIME needs. Because capacitors, resistors, and photo- cells all have widely varying tolerances and are temperature sensitive, the values returned from RCTIME cannot be used as absolute values,...

Ngày tải lên: 10/08/2014, 04:21

... typical Roomba robotic 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 for around $100 ... 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 -1 0: 0-4 7 0-0 727 1-7 (paper/website) 1. Robot...

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

... over the years. Unfortunately none of them seem to use the USB video device class, so each webcam must have a separate driver instead of them all using a general driver. In practice, there are only ... Figure 1 5-5 shows the diode being sol- dered in between the two power leads. Make sure the white bar of the diode points away from the 9V connector when soldering. Figure 1 5-6 shows the p...

Ngày tải lên: 10/08/2014, 04:21

... OpenWrt, 312, 313 wireless connectivity Bluetooth interface. See Bluetooth interface web pages for, 248–255, 252 Wi-Fi. See Wi-Fi Wireless Ethernet, 232 wireless routers for OpenWrt, 303–304 as ... providing the tech tips and tricks readers need to get the most out of their hi-tech lives. OSMO//hacker, 16–17, 17 over-current events, 27 over-current sensors, 114 P pack method, 253 packages,...

Ngày tải lên: 10/08/2014, 04:21

... 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

... cable lines, generally the longer the cable, the larger the capacitors will need to be. And in RS-232, long means several hundred feet, not the 1 0- feet cable you’ll be using here. Maxim will help ... Serial Interface Tether Getting Ready Figure 3-6 shows the parts needed all laid out. From here you can see the difference between the Mini DIN cable (round ends) and the DB9 cable (flat end...

Ngày tải lên: 10/08/2014, 04:21

... other and then connects 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 ... complete description of getting the SitePlayer Telnet on the network, see the SitePlayer Telnet manual. F IGURE 1 1-1 0: Configuring the SitePlayer Telnet serial port More Complex Interfacing Ch...

Ngày tải lên: 10/08/2014, 04:21