Search found 3028 matches

by peterwaller
Sun Jun 24, 2018 4:31 pm
Forum: Events
Topic: Event on September 15 2018
Replies: 3
Views: 32

Re: Event on September 15 2018

Good for me as well mind you I do tend to organise my calendar around the robot events thanks to a very understanding wife.
by peterwaller
Fri Jun 22, 2018 2:38 pm
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

While waiting for the PCBs I have designed the case and with an old piece of PCB material mocked up the new 5 A controller. Here it is with all the cables plugged in next to the old 1.2 A and it is a very similar size. The old is 38 x 24 x 11 mm and the new 32 x 25 x 12 mm. https://oqx4ow.db.files.1...
by peterwaller
Fri Jun 22, 2018 2:00 pm
Forum: Antweights
Topic: T_Y's Build Log
Replies: 60
Views: 2138

Re: T_Y's Build Log

That is a good looking robot and an amazing amount of wire crammed in. I have had problems in the past getting all the wiring in which is why am experimenting with controller modules that though bigger than some reduce the need for external wiring by including the power, servo and motor connectors p...
by peterwaller
Tue Jun 19, 2018 6:16 pm
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

You can get the connectors surface mount but with the various loads and vibrations I prefer the added strength of through the board joints that can if necessary be soldered on both sides. Finally settled on the double sided layout and actually ordered the PCB's this afternoon. I know the current req...
by peterwaller
Sun Jun 17, 2018 10:30 am
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

That's an interesting chip but it is only 0.5 A continuous so would be a bit near its limit. Also I normally need the third channel for a servo or brushless . I had a further play with the other layout I had tried with components on both sides and have got it down to 30 x 23 mm all be it with an inc...
by peterwaller
Fri Jun 15, 2018 7:49 pm
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

The size is mainly down to the 5v 1.5A regulator two of these chips and the orange receiver and power switch which make up around 75% of the area. The rest is just a ATTiny24 processor some decoupling caps and the power servo and motor connectors to make it plug and play. I could have used smaller c...
by peterwaller
Fri Jun 15, 2018 6:04 pm
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

Just found a new full bridge driver the TLE 5206 which although quite a bit bigger can handle 5 A continuous from 6 v to 40 v. http://uk.farnell.com/search?st=TLE5206 I have just hooked up one to one of my boards and it appears to work well without any changes the the software. https://pwwtga.db.fil...
by peterwaller
Mon Jun 11, 2018 6:17 pm
Forum: Antweights
Topic: T_Y's Build Log
Replies: 60
Views: 2138

Re: T_Y's Build Log

You need to be careful most of those are just motor driver boards that will not work with the signals generated by a standard receiver.
by peterwaller
Mon Jun 11, 2018 6:13 pm
Forum: Questions (and answers)
Topic: Spinner not spinning
Replies: 4
Views: 164

Re: Spinner not spinning

Most brushless controllers require the channel controlling them to be at a minimum when they start up. Assuming you are running it from the throttle channel that should be fully closed or normally back. Some times you even need to have the trim fully back as well. If the channel is reversed on the t...
by peterwaller
Mon Jun 11, 2018 2:40 pm
Forum: Antweights
Topic: Ant Attempt 2 - 'Tough Justice'
Replies: 18
Views: 702

Re: Ant Attempt 2 - 'Tough Justice'

Seeing as this seems to be a common problem here are some close ups of the board marked up with the pin designations and coloured lines showing alternative solder positions. https://pgwtga.db.files.1drv.com/y4mdtVJy6eZT9EoyGeYRQtrv9ymWKvgH_SajzhREV16pGHr328j8a5RZaZTmImRgamAwTZUVKkiwF9z2kBcDhT7ORt9uk...
by peterwaller
Sun Jun 10, 2018 6:33 pm
Forum: Antweights
Topic: Ant Attempt 2 - 'Tough Justice'
Replies: 18
Views: 702

Re: Ant Attempt 2 - 'Tough Justice'

If you look carefully at the pad that has come off you will see it has a small hole through it. This was a plated through hole that connected to the other side of the board. If you look at the picture below the red arrow shows the track on the other side where the connection goes. This is the 5v out...
by peterwaller
Fri Jun 08, 2018 3:31 pm
Forum: Questions (and answers)
Topic: Walker rule clarification? Unusual design.
Replies: 30
Views: 593

Re: Walker rule clarification? Unusual design.

I had forgotten how much more lively the discussions were with you on here Dave. I am still not convinced though that a bristle bot does not meet the rule. I am not saying it deserves to get the the extra weight but it is the bristles that convert the vibration into linear motion and there is nothin...
by peterwaller
Thu Jun 07, 2018 6:15 pm
Forum: Questions (and answers)
Topic: Walker rule clarification? Unusual design.
Replies: 30
Views: 593

Re: Walker rule clarification? Unusual design.

The actual rule which can be found here http://www.antweight.co.uk/rules.htm states
Walker - A robot whose final drive output rotates through less than 180 degrees (e.g. legs)
So unless the bristles rotate through more than 180 degrees it must be a walker. :roll:
by peterwaller
Tue Jun 05, 2018 7:40 am
Forum: Antweights
Topic: Robot Name Clearing House
Replies: 9
Views: 348

Re: Robot Name Clearing House

I hadn't noticed the duplication.
My Termite Cluster consists of Dominant and Alsoran which probably wont cause to much confusion but calling out Flippant and Flip Pant could cause problems.
by peterwaller
Fri Jun 01, 2018 7:02 pm
Forum: Antweights
Topic: Peter Wallers Robot Ramblings
Replies: 695
Views: 77731

Re: Peter Wallers Robot Ramblings

Although my controller module with the motors included works well in many robots there are times when you need the motors separate or in the case of the four wheel drive below you have to add extra wires. https://mgwtga.db.files.1drv.com/y4mtc3_P4BKXShL1m3DNWYcbiuHJUKDYBkCWstEgwaup09Y5MEWjxvWk2_AizJ...