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Everything posted by OzShan
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[HELP] Which part is this?
OzShan replied to Kumbbl's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Agreed :) -
[HELP] Which part is this?
OzShan replied to Kumbbl's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
One of these? http://www.bricklink.com/catalogItem.asp?P=87408 -
New book: Incredible LEGO Technic
OzShan replied to Sariel's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Looks great. Enjoyed your first book. It's on the Christmas list :) -
[MOC] Oldtimer Volkswagen Service and Repair Workshop
OzShan replied to Norton74's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Another level, well done :)- 50 replies
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- Volkswagen
- garage
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Flight using Lego
OzShan replied to anton1678's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
If it were more like a parasail than a chute it might be of some use.- 157 replies
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- plane
- helicopter
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Flight using Lego
OzShan replied to anton1678's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Correct. I apologise in advance if I upset anybody. It was meant to be a light hearted stab at the futility of using inappropriate materials for a given application.- 157 replies
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- plane
- helicopter
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Flight using Lego
OzShan replied to anton1678's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Bring it into this century of aviation, design some nice jet engines with these: Much better thrust to weight ratio :)- 157 replies
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- plane
- helicopter
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PF remote using smartphones
OzShan replied to zweihander's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Sounds very interesting. The IR transmitter sends square wave pulses at 38kHz. It sends 6 pulses to represent a bit in the stream, and then the delay afterwards is interpreted as either a 1, 0, start or stop bit. All the low level details of the protocol are published by lego. Search for version 1.2. (If you have trouble finding it let me know). It also specifies how tolerant the receivers are of timing errors. If the app can accurately generate tones, and switch the tone on and off again accurately in time, it should work. You are right about the pi, I also started there and put it aside favouring an arduino instead. Even though the output from the phone may not be square wave you could probably put a little amp in between to drive the LED on fully at the start of the pulse. I think it's worth a go for sure. -
[HELP] Custom LED controller for automatic turn and reverse signals
OzShan replied to VintageCharlie's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Good thread so far, watching with interest :) Just a small word of warning with the arduino software (which may not even affect you). It caused issues on my PC when I tried to re-load NXT firmware. Had to uninstall arduino, then it would recognize NXT brick in boot mode. No NXT, no problem. -
Mindstorms EV3 for various automation
OzShan replied to jonha134's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I know you said ev3 specifically, but is this kind of thing any use to you? Maybe could be adapted to fit the ev3 hardware? http://www.philohome.com/nxtsupply/nxtsupply.htm Phillo is a member here too.- 3 replies
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- automation
- ev3
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Flight using Lego
OzShan replied to anton1678's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
That is a solid effort. How about separating out issues of stability and control for now and concentrating on outright lift? If you extended a (lightweight) pole about 20l underneath and held that loosely in tube you could limit all the tipping and falling. If the contraption lifts up while being stabilized by the tube, you know you have enough lift and can start looking at stability. If not it's back to the drawing board.- 157 replies
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- plane
- helicopter
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[REVIEW] 42030 - Volvo L350F Wheel Loader
OzShan replied to Jim's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
How'd that work out for you? :) I'm keen to see how well it responds left and right. -
Gears, most wanted
OzShan replied to efferman's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Sweet, thanks. Is that for a set of three? Just assuming from the photo, it doesn't say one way or the other in the description. -
[WIP][HELP] Band Saw
OzShan replied to krtwood's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Got any rims from the classic technic "shock cycle" 8838? Pretty sure they are just smooth all the way round. http://lego.wikia.com/wiki/8838_Shock_Cycle -
Customised PF 8879 speed controller
OzShan replied to OzShan's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
There are a couple of good bluetooth projects around for receivers. One in particular is here: http://www.eurobricks.com/forum/index.php?showtopic=87340&st=25#entry1917960 There is no reason why this can't be complemented by a bluetooth transmitter inside of this handset. Has the advantage of working at NXT/EV3 level too. Keep the comments coming :)- 12 replies
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- Power functions
- Absolute
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Gears, most wanted
OzShan replied to efferman's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Any luck there? -
Customised PF 8879 speed controller
OzShan replied to OzShan's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Interesting topic over here by Bzroom: http://www.eurobricks.com/forum/index.php?showtopic=96788 (Thanks for sharing your code. I was too lazy to implement the PFIR time sharing between channels, I will have to before I share mine now :) I got to thinking that two joysticks might be a better way to go altogether. They would fit in the existing dial holes fine (and could be neatened up with a bit of a shroud). Two clickable x/y joysticks could give three channels (each with red and blue ports) so six devices, without modifying the externals of the 8879. Cars: forward/reverse on the right stick, steering on the left stick as left/right. Shift gear on stick depress, or lights on/off (would require a little custom code to interpret the press as change motor direction or simply toggle on/off but possible) Tanks: forward reverse as with cars, but then right stick left/right could drive a subtractor. Left stick could then control the turret and gun. Depress left to fire....? The joysticks are cheap off ebay, so the parts list is not looking too expensive so far. Would be better if I could find some in orange. Mapping stick to IR channel would have to be set internally via something like dip switches but it shouldn't have to change too often.- 12 replies
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- Power functions
- Absolute
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Ultimate 8081 B Model
OzShan replied to Bzroom's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Love it. -
Customised PF 8879 speed controller
OzShan replied to OzShan's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Spring return on both, or just left-right? I've been thinking about this too.- 12 replies
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- Power functions
- Absolute
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Optimus prime
OzShan replied to tuanzi's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
That is fantastic. Any chance of a video? -
Customised PF 8879 speed controller
OzShan replied to OzShan's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Absolutely. I hope they do. Be nice if they released another controller. I'm not stuck as such, more taking a breath before jumping in. I have an NXT controlled PFIR setup at the moment and yes it was very quick to get going. At least with NXC it it was anyway. Pricing for me for the setup you describe runs to about $170 making it a bit excessive though. If I put another $20-30 into a retrofit on the existing controller, I end up with a lot more dollars for parts. Everything is weighed up against dollars for parts :)- 12 replies
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- Power functions
- Absolute
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EV3 Expansion with Technic
OzShan replied to mvshabeer's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Now I'm learning something :) that sounds cool. -
[REVIEW] 42030 - Volvo L350F Wheel Loader
OzShan replied to Jim's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Sure, I'll put something together over the weekend. -
[REVIEW] 42030 - Volvo L350F Wheel Loader
OzShan replied to Jim's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
There are a few projects out there, both PF receivers and transmitters. Pretty cool that lego released the standard publicly (for non profit hobbyists anyway) I hacked together a two channel transmitter of my own using an arduino mega and a few basic external components. It doesn't support the full control set but it does take two proportional inputs and sends the full 15 stages to the respective output channels (all I needed at the time). Happy to share if anyone wants it (sorry if this is driving too far off topic) -
EV3 Expansion with Technic
OzShan replied to mvshabeer's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
That's not 100% true.. While you cannot plug PF directly into NXT or EV3 bricks, you can use one of these http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&key=NIL1046 to control PF motors/lights attached to PF ir receivers in turn powered by PF battery boxes. For a long time it only worked with NXT bricks but they have now released an EV3 block for it. I am using one with NXT and it works great. One sensor port will give you control of 8 PF devices (with 4 ir receivers driving the devices)