Itty Bitty Double Extruder

[clough42]

I'm looking at the RRD and Geetech fan extenders, and it looks like they might be wired opposite of each other. Has anyone else seen this?

The RRD fan extender (http://www.makerfarm.com/index.php/r...-extender.html) looks like it has the fans on D4/D5, and the Geetech one (http://www.geeetech.com/wiki/index.p...D_Fan_Extender) looks like they're on D6/D11.

The actual Geetech page referrs to their extender as an "RRD" fan exdender, and the top of the page references pin 4, just like the RRD extender, but the photos clearly show it wired to D6/D11 and the bullet down further in the page says to define FAN_PIN as 6.

For the record, when I recommend soldering pins to the top, for a servo, this will only work with the real RRD extender that has D11 free.

[Poindexter]

Thanks for the work around C42, as well as the new site. Time to get this thing running 100%.

[mwyrick]

I'm looking at the RRD and Geetech fan extenders, and it looks like they might be wired opposite of each other. Has anyone else seen this?

The RRD fan extender (http://www.makerfarm.com/index.php/r...-extender.html) looks like it has the fans on D4/D5, and the Geetech one (http://www.geeetech.com/wiki/index.p...D_Fan_Extender) looks like they're on D6/D11.

The actual Geetech page referrs to their extender as an "RRD" fan exdender, and the top of the page references pin 4, just like the RRD extender, but the photos clearly show it wired to D6/D11 and the bullet down further in the page says to define FAN_PIN as 6.

For the record, when I recommend soldering pins to the top, for a servo, this will only work with the real RRD extender that has D11 free.

I have a RioRand RRD Fan Extender and they are on D6 and D11 for sure. I have not decided if I am going to change my Pins.h or just rewire the board. You can see from the link below a good picture of the traces as to where they are. What I received is just like the pictures.

http://www.amazon.com/gp/product/B00GHE3456/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

[kd7eir]

Since board 34 redirects the fan to pin 4, why is anyone making extenders that use pin 6? Just sounds like ignorance to me.

[printbus]

Here's another possible option for a fan expander - you'd have to mount and wire it yourself but that way you can pick and choose what available pin you want each of the three MOSFETs to be controlled by. eBay MOSFET breakout board switch relay (15A, 60V) 3-outputs for Arduino/PIC

[mwyrick]

I have a RioRand RRD Fan Extender and they are on D6 and D11 for sure. I have not decided if I am going to change my Pins.h or just rewire the board. You can see from the link below a good picture of the traces as to where they are. What I received is just like the pictures.

http://www.amazon.com/gp/product/B00GHE3456/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

So in playing with the Geetech one on D6/D11 I found I could just install it shifted two sets of pins to the right towards Aux-1 and now it runs on D4/D5, This also opens up D11 for the servo to connect to so I don't have to do any modding of the expander. Board type 34 works fine with it installed two rows of pins over. I would expect the RRD expander on D4/D5 might be able to be shifted one row to make D11 available to the servo and still have D4 for the fan.

[beerdart]

Anyone try a retractable hot-end with the Itty Bitty?

[AbuMaia]

"retractable hot end"? What do you mean?

[beerdart]

[AbuMaia]

No, I don't think that'd work with this extruder.