Search found 39 matches

by MySolderIsOlder
Sat Mar 23, 2019 4:55 pm
Forum: Antweights
Topic: Pink servo??
Replies: 12
Views: 314

Re: Pink servo??

Aha - apparently US #3 machine screw is 2.3mm across the threads, which is what I make the screw supplied with the servo. So I think Peter has hit the nail, so to speak.
Cheers. Now I just need to source some threaded rod that size....
by MySolderIsOlder
Sat Mar 23, 2019 9:40 am
Forum: Antweights
Topic: Pink servo??
Replies: 12
Views: 314

Re: Pink servo??

Talking of pink servos, does anyone know the size of the thread in the middle of the splined arbor on the s306- ie the screw that holds the arm on? I’ve tried measuring it and seems to be around 2.2 or 2.3mm but hard to tell - and not even sure if it’s a standard pitch.
by MySolderIsOlder
Fri Mar 15, 2019 8:51 am
Forum: Antweights
Topic: Need a new esc
Replies: 3
Views: 176

Re: Need a new esc

The DasMikros are great if you're lucky and get one of the ones that actually work but it seems rather hit and miss. Over the past year I've ordered three batches; First batch of three were fine and all three are still going strong Couple of months later, ordered three more, they sent me four :D but...
by MySolderIsOlder
Wed Feb 27, 2019 3:23 pm
Forum: Events
Topic: Antweight World Series 58 - 29th June 2019
Replies: 23
Views: 1001

Re: Antweight World Series 58 - 29th June 2019

Well, I guess it's about time we let some of our ants experience the horrors of real combat... I'll enter separate teams for me and the boy (otherwise I'd never get a drive) but we'll try to keep it to 2-3 bots each. Had hoped for something more local but can't hold out any longer. Earliest train fr...
by MySolderIsOlder
Mon Feb 18, 2019 12:28 pm
Forum: Antweights
Topic: Team Antiquarian new build diary
Replies: 3
Views: 280

Spin(d)oza got new boots!

From my first batch of antweights, the definite runt of the litter was Spindoza. This was intended as a simple and durable push bot with big wheels and a front scoop that pivots freely around it's mid-point (so it always stays flush on the ground, even if the wheels are out of true and absorbs some ...
by MySolderIsOlder
Fri Feb 15, 2019 10:33 am
Forum: Questions (and answers)
Topic: Wiring N20 motor terminals
Replies: 3
Views: 258

Re: Wiring N20 motor terminals

When I was starting out, I really struggled with those little N20 solder tags. However I'd read somewhere that it was a good idea to put a small capacitor across the motor to reduce sparking - that's when I discovered the wire on those tiny capacitors that ship with the Das Mikro ESCs will fit throu...
by MySolderIsOlder
Fri Feb 01, 2019 11:01 am
Forum: Antweights
Topic: Team Antiquarian new build diary
Replies: 3
Views: 280

Re: Team Antiquarian new build diary

Thanks Mark. I had previously experimented with self-tapping screws but kept having problems with heads shearing off. Hence why I started experimenting with tapped holes. Really amazed how strong the joints are, even with just M2 size. Other pleasant surprise is that even where I've had to screw/uns...
by MySolderIsOlder
Wed Jan 30, 2019 5:09 pm
Forum: Antweights
Topic: Team Antiquarian new build diary
Replies: 3
Views: 280

Team Antiquarian new build diary

Having got past the mad pre-Christmas rush to build four ant-weights plus arena 'for domestic use', I've now settled down to a more sedate design/build cycle - one where I can learn from my many previous mistakes and have a bit more fun. First of these new generation bots is an invertible wedge/push...
by MySolderIsOlder
Wed Jan 30, 2019 3:36 pm
Forum: Antweights
Topic: GeorgeR's robots
Replies: 96
Views: 10469

Re: GeorgeR's robots

Sudden flashback to the bit in one of those star wars movies, where General Grievous reveals he has double the usual complement of arms and is spinning a light sabre at the end of each one. Gonna get messy - can't wait to see the fight videos!
by MySolderIsOlder
Mon Jan 14, 2019 5:09 pm
Forum: Antweights
Topic: Team Antiquarian build diary
Replies: 30
Views: 2301

Re: Team Antiquarian build diary - Conclusion of Vol. 1

Sorry - never got round to finishing this thread... FWIW, I did just manage to finish four antweights (ok, three, plus one over-weight) ready for Christmas, complete with an integrated storage box / arena. Latter is built out of 12mm birch ply, plus some 6mm for the internal separators, an old sheet...
by MySolderIsOlder
Mon Jan 14, 2019 10:46 am
Forum: Antweights
Topic: Using brushed Motors for gripper or hammer weapons
Replies: 6
Views: 447

Re: Using brushed Motors for gripper or hammer weapons

FWIW, did a very quick test yesterday with one of the 1:298 motors - popped on a large wheel, clamped the motor securely in a vice, wired it directly to a 6v NiMH battery and deliberately stalled it by stopping the wheel turning. To my surprise it had no ill effects - motor didn't get hot (neither d...
by MySolderIsOlder
Fri Jan 11, 2019 10:04 am
Forum: Antweights
Topic: Using brushed Motors for gripper or hammer weapons
Replies: 6
Views: 447

Re: Using brushed Motors for gripper or hammer weapons

Thank you both for those helpful thoughts. Mark - good point about the gearbox ratio. I had been thinking about trying it with some 1:298 motors I have sitting around but that might not be sensible... Though since I don't have any other use for them I may just destruction test one to see how long it...
by MySolderIsOlder
Wed Jan 09, 2019 4:05 pm
Forum: Antweights
Topic: Using brushed Motors for gripper or hammer weapons
Replies: 6
Views: 447

Using brushed Motors for gripper or hammer weapons

Quick question for anyone who's used N20-type motors either for percussive or for gripper/crusher weapons (i.e. where the motor's freedom of movement would be constrained to less than 360 degrees) ... Did you need some kind of slip-clutch, or a clever switch to cut the drive when it reaches the limi...
by MySolderIsOlder
Tue Dec 18, 2018 12:19 pm
Forum: Antweights
Topic: Team Antiquarian build diary
Replies: 30
Views: 2301

LiPO Bargain

I realise this will be out of date very soon - but if anyone needs some more LiPOs, HobbyKing currently have both the 2S and the 3S Turnigy Nanotech 180mah in the 'bargains bin' at £3.96 for a pack of five (less than a quarter the normal price). I went on there just now, planning to buy a single 3S ...
by MySolderIsOlder
Tue Dec 11, 2018 8:53 am
Forum: Antweights
Topic: Team Antiquarian build diary
Replies: 30
Views: 2301

Re: Team Antiquarian build diary

Hi Mark, Good question - Paul suggested on another thread that it's just there to absorb voltage spikes and avoid overheating, so could probably be removed. Certainly makes sense, though TBH I've not yet needed to use one in a build where space was a real issue. If you took it off and were a bit mor...