Can't control fan using Reprap Ramps 1.4 RRD Fan Extender April 19, 2016 07:24AM |
Registered: 8 years ago Posts: 6 |
Re: Can't control fan using Reprap Ramps 1.4 RRD Fan Extender April 19, 2016 06:53PM |
Admin Registered: 13 years ago Posts: 7,002 |
Re: Can't control fan using Reprap Ramps 1.4 RRD Fan Extender April 20, 2016 06:05AM |
Registered: 8 years ago Posts: 6 |
Quote
Dust
So apparently you have one of these [github.com]
As all earlier board don't have a servo type connectors
D12 and D11 are both PWM pins
M42 P11 S255 and M42 P12 S255 should work
You have wired the expanded correctly? Ie the two pins go to 12v and the 4 pins in a row are for the two fans ?
Update... I see the issue
If you compare the ramps servos pins to the MKS BASE pins you will see gnd and +5v are reversed
ie [reprap.org]
On a ramps the pins for each servo are data pin,+5v and gnd
On the MkS BASE is data pin, gnd then 5v
This board will not work by directly plugging it in to a MKS BASE board
Re: Can't control fan using Reprap Ramps 1.4 RRD Fan Extender April 20, 2016 07:46AM |
Admin Registered: 13 years ago Posts: 7,002 |