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| The LURC is planned to be a remote control car with all the bells and whistles. Picture a standard remote control car. | The LURC (the Long-Range UCC Reconnaissance Car) is planned to be a remote control car with all the bells and whistles. Picture a standard remote control car. |
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| http://svn.ucc.asn.au:8080/oxinabox/LURC/ (soon to be moved to a public repo) | http://svn.ucc.asn.au:8080/oxinabox/LURC/ |
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| [[mailto:oxinabox@ucc|Lyndon 'Frames' White]] is helping with the AVR code and serial interface. <<BR>> | [[mailto:oxinabox@ucc|Lyndon 'Frames' White]] is doing the AVR code and serial interface. <<BR>> |
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| What is done | ~+What is done +~ ---- * [[http://redneckrobots.com/BatteryTips/BatteryTips.htm|Assemble cells]] into a 7.2V battery pack * A significant amount of waiting for parts to arrive :S * Set up bifferboard with a basic operating system such as openWRT * Get serial commands sent from a computer to control the servos ~+What is being done +~ |
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| * Serial interface on the AVR end is done(ish) * <a href="http://redneckrobots.com/BatteryTips/BatteryTips.htm">Assemble cells</a> into a 7.2V battery pack * A significant amount of waiting for parts to arrive :S |
* Serial interface on the AVR (over-all 95%) * set up framework/datastucture for storing and retrieving received commands (./) * framework for execution of commands, (./) * implement vast array of all required commands (90% done) *SETPWM (SETPOS) (./) - testing ongoing *MODIFY PWM (MOD) (not done) *WRITEPORT (./) *READPORT (not done) *LCD (not done) *ADC (not done) * Implement serial communication (./) * extended testing * Setting up the bifferboard for webcam, serial control, etc. * Chassis and motor pod prototype |
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| What needs doing next | ~+What needs doing next +~ |
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| * Set up SVN for the project code * Set up router/bifferboard with a basic operating system such as openWRT |
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| * Get serial commands sent from a computer to control the servos | * Re set-up the bifferboard with a decent OS, eg debain. |
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| Parts we have got | ~+Parts we have got +~ |
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| * Brushless motor, 3800 Kv <a href="http://www.himodel.com/electric/3800KV_Outrunner_Brushless_Motor_for_450_Class_Helicopter_Type_H2835-H.html"> </a> | * [[http://www.himodel.com/electric/3800KV_Outrunner_Brushless_Motor_for_450_Class_Helicopter_Type_H2835-H.html|Brushless motor]], 3800 Kv |
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| * The servos have a full 180 degree range, using PWM values from 0.4ms to 2.4ms with a 20ms period. Using values outside these ranges kills kittens. For the hex values that define these values, see [[/Trimming]]. | |
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| * Router board with usb and serial for central control (<a href="http://wiki.openwrt.org/oldwiki/openwrtdocs/hardware/asus/wl500gpv2">this one</a> is on order) * Alternatively, a <a href="http://bifferos.bizhat.com/">Bifferboard</a>, which has already arrived, could be used. This has the advantage of onboard IO. * Wheels, gears, axles, and other RC car parts - I just dug out the old Meccano set Parts still to get or make |
* A [[http://bifferos.bizhat.com/|Bifferboard]]. This will be used to connect to the outside world, the webcam, and the AVR Butterfly. * Wheels and tyres, 2.2" hubs to suit a 3/16" axle - ''f*** these were expensive'' -- BobAdamson * USB power adapter for the bifferboard (for testing) * [[http://jaycar.com.au/productView.asp?ID=QC3231&CATID=20&form=CAT&SUBCATID=688| Webcam]], which should be sufficient to display a 640x480 image * [[http://en.wikipedia.org/wiki/Battery_eliminator_circuit| BEC]] and [[http://en.wikipedia.org/wiki/Electronic_speed_control|ESC]], [[http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=7186| this one]] is on order * FT232 converter (MAX232 works, but need a usb adapter for the bifferboard-gps connection anyway) - on order from sparkfun * 4 port usb hub for the bifferboard - this will allow us to have a usb stick, a webcam, and gps connected all at the same time. * A buggy kit, with wheels. chassis, motor, steering assembly. (We now have extra parts!) * Ni-MH battery charger * USB to serial adapter (sparkfun, 3v version) ~+Parts still to get or make +~ |
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| * MAX232 converter * Testing power supply for the bifferboard * <a href="http://en.wikipedia.org/wiki/Battery_eliminator_circuit"> BEC</a> and <a href="http://en.wikipedia.org/wiki/Electronic_speed_control">ESC</a> |
* Motor pod/mount (if we choose to put existing motor into the buggy kits) * Webcam Mount. |
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| * <a href="http://jaycar.com.au/productView.asp?ID=QC3231&CATID=20&form=CAT&SUBCATID=688"> Webcam</a>, which should be sufficient to display a 640x480 image * <a href="http://www.angelfire.com/electronic/hayles/charge1.html"> Battery charger</a> * USB to serial adapter and serial GPS module |
* serial GPS module |
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| * [[/Trimming|Control trimming]] * [[/SerialProtocol|The Oxinabox Lightweight Serial Protocol]] for AVR mega169 |
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| * openWRT | * openWRT (is evil) |
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* AVRstudio 4 * WinAVR (wich has the AVR-GCC C compiler) * br@y's Terminal, one of the best GUI COM terminal programs. |
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Description
The LURC (the Long-Range UCC Reconnaissance Car) is planned to be a remote control car with all the bells and whistles. Picture a standard remote control car. Now, throw out the radionics and replace it with a decent computer, controlled over the internet. Then add a webcam with pan and tilt, so the remote driver can see where he/she is going. Then add GPS. Then add solar power boosting. Then add battery level feedback to the remote driver. Top all this off with a whiz-bang steering wheel and driving pedals on a desktop, and you have yourself UWA's coolest car.
Creation date: November 2009
Location of source: http://svn.ucc.asn.au:8080/oxinabox/LURC/
Project leader
Bob Adamson is the leader and finance for this project.
List of people involved
Lyndon 'Frames' White is doing the AVR code and serial interface.
John Hodge has volunteered to write some fancy code for the web interface, and has threatened to put his acess kernel on the router :S.
Other people such as Rufus Garton-Smith and Adrian Chadd have been conscripted into helping with the webcam and the 3g dongle respectively (thanks guys!).
Did I mention that OTHER PEOPLE ARE WELCOME TO GET INVOLVED?
Also, thanks to Mitch Kelly for his advice, even though we don't always agree on things 
Project plan
What is done
Assemble cells into a 7.2V battery pack
- A significant amount of waiting for parts to arrive :S
- Set up bifferboard with a basic operating system such as openWRT
- Get serial commands sent from a computer to control the servos
What is being done
- Serial interface on the AVR (over-all 95%)
set up framework/datastucture for storing and retrieving received commands
framework for execution of commands,
- implement vast array of all required commands (90% done)
SETPWM (SETPOS)
- testing ongoing - MODIFY PWM (MOD) (not done)
WRITEPORT
- READPORT (not done)
- LCD (not done)
- ADC (not done)
Implement serial communication
- extended testing
- Setting up the bifferboard for webcam, serial control, etc.
- Chassis and motor pod prototype
What needs doing next
- Order USB dongle (crazy johns claims to have cheap ones at the moment)
- Test AVR serial code for robustness and completeness
- Re set-up the bifferboard with a decent OS, eg debain.
Parts we have got
Brushless motor, 3800 Kv
- Servos x 3. These are smaller than what was expected at about 1x2x3cm, but should be strong enough
The servos have a full 180 degree range, using PWM values from 0.4ms to 2.4ms with a 20ms period. Using values outside these ranges kills kittens. For the hex values that define these values, see /Trimming.
- C size rechargeable cells, 6x3300mah NiMH
- AVR atmega169 butterfly board
- Solar panel
A Bifferboard. This will be used to connect to the outside world, the webcam, and the AVR Butterfly.
Wheels and tyres, 2.2" hubs to suit a 3/16" axle - f*** these were expensive -- BobAdamson
- USB power adapter for the bifferboard (for testing)
Webcam, which should be sufficient to display a 640x480 image
- FT232 converter (MAX232 works, but need a usb adapter for the bifferboard-gps connection anyway) - on order from sparkfun
- 4 port usb hub for the bifferboard - this will allow us to have a usb stick, a webcam, and gps connected all at the same time.
- A buggy kit, with wheels. chassis, motor, steering assembly. (We now have extra parts!)
- Ni-MH battery charger
- USB to serial adapter (sparkfun, 3v version)
Parts still to get or make
- Motor pod/mount (if we choose to put existing motor into the buggy kits)
- Webcam Mount.
- USB broadband dongle (borrow off of Adrian for the moment!)
- serial GPS module
Other info
The Oxinabox Lightweight Serial Protocol for AVR mega169
Some programs we are probably going to need
- openWRT (is evil)
- wvdial (a command line dial-in PPP utility)
- MJPG-streamer (stream webcam using various output plugins)
- AVRstudio 4
- WinAVR (wich has the AVR-GCC C compiler)
- br@y's Terminal, one of the best GUI COM terminal programs.
Links
http://wiki.openwrt.org/oldwiki/ddnshowto for dynamic dns
http://wiki.openwrt.org/inbox/asus-wl500gp will be handy for getting usb and webcam going
http://josefsson.org/openwrt/dongle.html will help with getting Huawei usb dongle going
http://linux-uvc.berlios.de/faq/ just to check webcam compatibility
