How to make a electronic Dig.

[craigrobbo]

Hi guys. iv had some PM's asking about this so here we go.

Iv done some basic diagrams in paint which are relativly easy to follow.

The center arm is turned via a servo and the wire will sit ontop with a connection on the underside.

The way to do this is if you get a peice of plastic drill 2 holes in the end (spaced to line up with the main board) have the wires sit ontop and use some 'scalextrix' brushes or similar on the underside.

as for the otehr side you can use a blob of solder or some 'gold plated' buttons.

The basic concept is similar to using a MSC(manual speed control)

There are 2 options here, a 3ch set up and a 4ch set up.

The 3ch setup allow 4x4, front dig and rear dig

the 4ch set up will allow 4x4, front dig, rear dig, front free wheel and rear free wheel.

the 4ch setup will require 2 servos and 2 boards.

The cabling that is used on the arm i would sujest using some flexible cable.

When wiring the 'short' you can either do a direct short or use resistors for varying amounts of dig.




This is the 3ch version.


Here all 4 wheels are driven as normal

This is the motor in dig

This is the motor in freewheel mode




This is the 4ch version, remember you need 2 of these usits.


Here all 4 wheels are driven as normal

This is the motor in dig

Motor is in freewheel mode

[Spiftacu1ar]

If you have a channel 3 with more than 3 positions (5 to be precise), you can up one channel to have 4x4, front dig, front free, rear dig, rear free. Then you sitll have your 4th channel free .
BUt, if your controller can do 5 positions, it probably also has the programming availble to mix 2 esc's in the same manner.

[craigrobbo]

Originally Posted by Spiftacu1ar

If you have a channel 3 with more than 3 positions (5 to be precise), you can up one channel to have 4x4, front dig, front free, rear dig, rear free. Then you sitll have your 4th channel free .
BUt, if your controller can do 5 positions, it probably also has the programming availble to mix 2 esc's in the same manner.

Yep
You can have as many combinations as you want using several channels and positions.

I tried to put up the most popular and most useful while keeping it as simple as possible.

Thanks

Craig