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DuaneB

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About DuaneB

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  1. Hi, It would be simple to handle dig or any other function provided your transmitter has enough channels to select the modes your require. I have built a lot of similar projects including- Active yaw control which senses unintended rotation and adjusts the throttle and steering in real time to stabalise an M04 http://rcarduino.blogspot.ae/2012/07/rcarduino-yaw-control-part-2.html Mapping steering and throttle (car type) controls into completley different signals for tracked vehicles http://rcarduino.blogspot.ae/2012/05/rc-arduino-robot.html Measuring the relative speeds of four wheels to detect a loss of traction http://rcarduino.blogspot.ae/2013/06/rc-arduino-traction-control-traction.html In the short term I will use this in my M03 to test different traction control strategies but its long term future will be in my twin motor M07 (m03 + m04) http://rcarduino.blogspot.ae/p/cars.html Finally to see if a traction control system really works, you need a personal lap timer http://rcarduino.blogspot.ae/2012/10/lap-timer-build-along-part-4-adding-ir.html These rcarduino projects are widley known and used within the Arduino community. Duane B (rcarduino)
  2. Hi, Here is what I will do, I will find out if anyone is willing to produce a kit with a pre programmed chip, a printed circuit board and a component pack. Self assembly from pre packed components is the best compromise between cost and ease of building. As for features, I have added a few today, most things would take a day or less for me or any other competent programmer to add. Let me have some time to find someone willing to produce a kit, in the meantime, keep the suggestions coming and look out for a video with the new features tomorrow. The other thing that everyone wanted was to have thier own box which they could take home with them, so I almost certainly will get around to adding the capability to select frequencies in order to support several cars/boxes running together. Duane.
  3. Hi, These guys are US Based, and would stock all of the components - http://www.adafruit.com We ran an m-chassis hot lap contest using the system yesterday. I originally build the system for myself, but it was great fun to use for a competition, people were standing over the timers watching to make sure thier times were not being beaten and calling out the times if the current drivers were getting close to the record, it really increased the pressure and made the day so much more fun to be part of. An early lap before everyone got excited about defending thier times - The timer on the right is the one from my blog - i literaly stuck it to a plastic board and took it to the track, the one on the left if the same system in a box. We are planning another competition for Monday, that tells you how much fun we had - its 47 degrees outside and people want to try again in two days time ! Duane.
  4. Hi, I will keep my replies in this thread so that its clear to the mods that this is not a commercial. Where are you guys based ? If there is a 'maker shed' or 'Hack Space' near you they could help you to build a box - buy them a case of beer and they might even do most of the building for you. Duane B
  5. It would be possible to run more than one car with more than one box. One stupidly simple solution is to put the transponders/boxes on different sides of the cars. Aside from that, the boxes and transponders can be set to different frequencies, I have some that use 100 micro second pulses and some that use 1 milli second pulses. I had not considered building a single box that could read more than one car, but it would not be difficult to modify the software for two cars. The problem is that then you get 'feature creep' and you end up comparing it to a laptop with a graphical user interface, sensor bridges and all the rest of it. Thats now what I built it for. I wanted something I could just take it to the park, the car park or the street outside my house and get some timed laps in. We are actually using the system tomorrow at our club track for an m-chassis hot lap contest - the club does not have a timing system yet so the first competitive event will be possible due to this little device. I will let you know how we get on. I can't make any promises, but will consider building a two car/single box version based on the two frequencies I am already using in different versions. Duane B.
  6. Hi, Post on the blog if you need help, I hope to get some video of the 'build a long' version at the track this weekend, it will be the final step of the build - adding the IR Detector - its the simplest part of the build so nice to finish on something easy. Duane
  7. Hi, I designed and built the device because RC Cars are only so much fun without having something to measure you skill or setup against, as for selling pre made ones, I would love to but living in Dubai shipping them is a massive pain. The electronics is pretty simple and the software is available on my blog so you could have a go at building one. You can literally cut and paste the software and upload it to the Arduino through a USB Cable using any Windows or Mac computer. I have a lot of other Arduino RC Projects, here is a one I built recently to add active yaw control to a tail happy m04 - http://rcarduino.blogspot.com/2012/07/rcarduino-yaw-control-part-2.html Duane
  8. Hi, If you remember, this thread is about a lap timing system that fits in your pocket, you can take it to the BMX Track, or the parking lot and run hot laps against your mates. Its one car only, hence the hot laps, but with no laptop, sensor bridge or faffing about its a great solution which you can build yourself for about 20 dollars. It works perfectly well outside, even in the Dubai sunshine. Here is part one of the build along, anyone with a soldering iron should have no trouble in transferring this to strip board. http://rcarduino.blo...g-part-one.html Part two is an overview of the transponder with a parts list, part three will cover adding the IR Detector and tranponder so you end up with the complete solution as showing in some of the other videos. Duane B
  9. Here is what I am doing to deal with RWD Handling - http://rcarduino.blogspot.com/2012/07/rcarduino-yaw-control-part-2.html The proof of the pudding is that the test drivers I gave the controls to didn't know it was an m04 until I took the shell off. Duane B
  10. Taking it to the next level, here is my M07 rally mini, its a FWD M03 joined to a RWD M04 with twin motors. It has the M05ra hubs all round. http://rcarduino.blogspot.com/p/cars.html Its crazy fast but the rear tends to come around. I have a plan to fix this with active torque and brake force distribution between the front and rear motors. Duane B
  11. Hi, The diameter makes a big difference to top speed. There is a table of some common tyres in the middle of this post, the largest should be about 10% faster than slicks - http://rcarduino.blogspot.com/2012/03/tyre-testing-3racing-m-chassis-tyres.html Duane B http://rcarduino.blogspot.com
  12. Here is my mini version, I have since built a plasticard body which I intend to detail as an APC - http://rcarduino.blo...uino-robot.html Its small and quick indoors, underpowered for outdoor use though. The handling is great with full proportional control and the microcontroller doing all the work of mapping from RC throttle and steering channels into independent track directions and speeds. Duane B http://rcarduino.blogspot.com
  13. I could adapt this to measure time between to points and display the speed - http://rcarduino.blogspot.com/2012/05/lap-timer-preview.html Duane B http://rcarduino.blogspot.com
  14. Hi, This is one example of nice, small Arduino implementation - http://www.solarboti.../product/kardw/ Going back to one of the original subjects 'electronic differential', here is my implementation of an electronic differential in a two motor tracked robot controlled by a pistol grip RC Car transmitter - Apart from the horrible paper bodyshell, all mechanical parts are Tamiya - http://rcarduino.blogspot.com/2012/05/rc-arduino-robot.html Duane B http://rcarduino.blogspot.com
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