Swannys Bar

**woody** · 8th December 2007, 18:51

http://www.active-robots.com/products/motorsandwheels/industrial-servomotors.shtml http://www.active-robots.com/product...ervomotors.sht ml
Simple but expensive!!

**swanaldo** · 8th December 2007, 20:40

thaty looks like it would turn a tank. very expensive too. still i do like it

**mightymouse** · 9th December 2007, 06:54

Shane your motor and screw drive is perfect, but instead of having a microswitch to limit the travel you use it to control the motor drive relative to a separate block on the steering arm, this is controlled from a standard servo. This is very hard to put into words!

I will try to do a better picture layout for you, but it will probably be later today - I have to go xmas shopping(yawn).:sad:

Trev

**swanaldo** · 9th December 2007, 15:54

enjoy trev. done all mine

**mightymouse** · 9th December 2007, 18:06

Shane - on my profile is a sketch showing roughly how the system works. I have not added microswitches to limit the travel as you can work that one out.

The wiring is the key, as by using 2 changeover relays, when both relays are off the 0v connections short out the motor contacts and slam the brakes on. Without this the steering will tremble

When the sliding block moves it triggers a microswitch that makes the motor chase the block. When the block stops the motor will stop when the steering arm with the relays attached catches up. When you release the joystick on your remote the servo centres itself and so does the steering arm. The limit microswitches are wired in line with the trigger m/switches to switch off the relays.

Hope that makes sense!

Trev

**swanaldo** · 12th December 2007, 17:40

gonna go with your setup trev. i will let you know when its complete but there is no hurry at the mo. i wanna take it to the fairford event to race around on an evening. you can inspect it there. and i am sure john bell would like to play too.

**swanaldo** · 14th December 2007, 17:55

well its christmas party time again and i will be spending my christmas staff party on my own as usual. i have to travel 1 hour to work every day so i cant join in the christmas party with the staff and my boss just doesnt drink so if anyone else is in a similar position mabee we could all get together and have our own staff christmas party.