Making converter Cables

[That_LEGO_Guy]

I've recently come into possession of a bunch of dacta 9V motors, cables, battery boxes and a few sensors and I'd really like to use them with my PF and NXT stuff.

Does anyone know how to wire up Power function-9V and NXT-9V converter cables? I've got a few damaged cables and would rather make use of them than buy some

Also does anyone know if the rotation sensor can be used with the NXT?

[Snapshot]

The standard PF extension lead is all you need to use the motors with PF and the 9V contacts connect to the inner pair of  PF contacts.

[syclone]

these should help:

 from http://www.josepino.com/robots/hacking_lego_nxt

 

9V to PF is straight-forward just connect C2&9V to one wire and C1&0V to the other (using such a setup in a PP3 [standard 9V block] adapter myself)

Edited March 5, 2019 by syclone

[That_LEGO_Guy]

Thankyou those will help

[mocbuild101]

On 3/5/2019 at 5:11 PM, That_LEGO_Guy said:

Also does anyone know if the rotation sensor can be used with the NXT?

I've seen them used here, so there must be a way of using them.

[Carsten Svendsen]

On 3/5/2019 at 7:11 PM, That_LEGO_Guy said:

Also does anyone know if the rotation sensor can be used with the NXT?

I'm no expert, but I would imagine that 9v is supplied to the rotary sensor, and there's a resistor inside, that is shunted by every 8 rotations (as it's old tech). This causes the 9v to drop. 

If I had one, I would test it for you, but try putting it on a converter cable and plug it into the sensor port of the NXT. Put a push button block in the program, and count the number of pushes for 1 rotation.

[Toastie]

It is old tech, but it is not that straight forward (as the RCX knows when it rotates clockwise or counterclockwise): See Philo's detailed information on the sensor.

Best,
Thorsten

[Essge]

Look at the connection diagram in this link. You need resistors between the sensor outputs or something
https://bricks.stackexchange.com/questions/2325/how-to-use-power-functions-with-mindstorms-ev3