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Destiny Ghost Animated

by Milkdud

So I printed a ghost from the game Destiny and wanted to give it realistic features like.. LEDS (for light in eye), movement, and speech. I bought a arduino pro mini because the space in the eye is limited. Also got a micro servo for movement and currently waiting for leds to come in the mail. for speech I could only think of taking apart a cheap bluetooth speaker. I need help with wiring or suggestions on how I should go about this project please and thank you!

Servo or electromagnets

by mate1976

Hello, I recently found the Robox dual printer. It has an interesting rotary head. I wanted to use this type of head in the printer I build. Repositioning would be either servo or small electromagnets. Is it possible to put in the arduino code and then to the G code of the serva commissioning command or to switch on the relay that turns on the electromagnets.
Regards
Marcin

Arduino LED Diodes

by chrismunt2424

Can anyone advise me on how to use a Arduino Uno to make multiple LEDs chase in various patterns up to 200 LEDs

Marlin Firmware will not compile on arduino mega

by jamesjfc

Hello, I was trying to put this Marlin Firmware onto my arduino mega . At the end this error message showed up. Does anyone know what I can do to fix it.

avrdude: ser_open(): can't open device ".\COM4": Access is denied.

avrdude: ser_drain(): read error: The handle is invalid.

avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.

avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
the selected serial port avrdude: stk500v2_getsync(): timeout communicating with programmer
does not exist or your board is not connected

NuBe: How do I use the Thingiverse file?

by kpgresk

I want to print "XY Calibration by phithor". I've downloaded the file. I'm using a Mac (OS 10.12.6) and Arduino 2560 board, ramp 1.4 & Marlin. What do I need to do with the file on my way to printing?

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