Difference between revisions of "Reprap Ramps1.4 RRD Fan Extender"
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The latest Marlin firmware is available here:https://github.com/ErikZalm/Marlin | The latest Marlin firmware is available here:https://github.com/ErikZalm/Marlin | ||
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== TEST == | == TEST == | ||
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1.Upload Test for Editing Reprap Ramps1.4 RRD Fan Extender to your Mega. | 1.Upload Test for Editing Reprap Ramps1.4 RRD Fan Extender to your Mega. | ||
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| + | void setup() | ||
| + | { | ||
| + | pinMode(11, OUTPUT); | ||
| + | pinMode(6, OUTPUT); | ||
| + | } | ||
| + | void loop() | ||
| + | { | ||
| + | digitalWrite(11, HIGH); | ||
| + | digitalWrite(6, LOW); | ||
| + | delay(5000); | ||
| + | digitalWrite(11, LOW); | ||
| + | digitalWrite(6, HIGH); | ||
| + | delay(5000); | ||
| + | } | ||
| + | |||
| + | |||
2.Connecting follow this picture: | 2.Connecting follow this picture: | ||
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| − | 3. | + | 3. Power up ,two fans will take turns to rotate |
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| + | == How to buy == | ||
| + | |||
| + | Click here to buy [http://www.geeetech.com/reprap-ramps14-rrd-fan-extender-p-683.html Reprap Ramps1.4 RRD Fan Extender] | ||
Latest revision as of 01:46, 3 June 2014
Contents
Overview
If you build or upgrade your printer with/to DUAL-EXTRUSION (2 extruder) including a heated bed all the output ports (D8,D9,D10) will be used. In this case there is
not option to connect a firmware controlled FAN to RAMPS board directly. However in Sprinter/Marlin firmware there is an option already (Marlin: BOARD=34) which
redirects the FAN to RAMPS output D4. But this solution needs a "buffer/driver"in order to work.
The RRD-FAN-EXTENDER is exactly what you need in this case. It is a plug and play solution to mount the FAN for DUAL-EXTRUSION setups with RAMPS1.4. But instead of
adding only one additional output port the RRD-FAN-EXTENDER is equipped with 2 PWM controllabe channels(D6/D11). The second channel can be used for another fan
(e.g. to cool the stepper driver) or for adding light control (e.g. add dimmable LED light to your machine).
Features:
- max 20V
- 2 (PWM controllable) channels (D6/D11)
- max 0.5A per channel (enough for a really big fan)
- flexible output voltage (you can connect the RRD-FAN-EXTENDER to 12V,5V,... in order to support the output voltage you need)
- each channel has a fly back diode
- easy setup (plug and play)
- already supported by Marlin firmware (choose "#define MOTHERBOARD 34")
- easy to adapapt to other firmware (e.g. Sprinter: just change "#define FAN_PIN 6" in "pins.h")
Firmware:
Firmware:
You need Marlin firmware v3 or newer. If you are using older firmware, you must re-flash your board.
The latest Marlin firmware is available here:https://github.com/ErikZalm/Marlin
TEST
Test the Editing Reprap Ramps1.4 RRD Fan Extender
Hardware required:
1.Upload Test for Editing Reprap Ramps1.4 RRD Fan Extender to your Mega.
void setup() {
pinMode(11, OUTPUT); pinMode(6, OUTPUT);
} void loop() {
digitalWrite(11, HIGH); digitalWrite(6, LOW); delay(5000); digitalWrite(11, LOW); digitalWrite(6, HIGH); delay(5000);
}
2.Connecting follow this picture:
3. Power up ,two fans will take turns to rotate
How to buy
Click here to buy Reprap Ramps1.4 RRD Fan Extender
