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Showing posts from 2014

Post in evidenza

Router table with power lift, built around Ikea BEKVÄM and parts from old drafting machine

This is my (quite) completed router table built around IKEA kitchen cart BEKVÄM and a precise drafting machine cannibalized.

Router is a Bosch POF 1200.
Router table is equipped with power lift feature (missing only router support in the photos).

EMBROIDERY CNC: Software completed

The software for the cnc embroidery is finally completed and fully functional.

Screenshot: Main screen
Screenshot: Palette selection
Screenshot: Color selection
Screenshot: Artwork translate panel
Screenshot: Grbl dashboard panel (realtime via browser thanks to Websocket)
Screenshot: G-Code Inspection panel

COIN-OP: mini arcade cabinet build log

My father bought some wood panels from Ikea. He donated two to build a mini arcade cabinet for my son. The arcade cabinet will use a raspberry pi with PiMame and some Sparkfun arcade goods, like a Zippy arcade joystick and concave buttons. In this post you'll find a short build log. The cabinet is 1 meter tall (39") and 0.42 meter wide (17").

Cutting the hpl boards. Masking tape installed for marking

The monitor, a 19" sony sdm-hs95
Build log:

Monitor installation test

BOXEDCNC: Brushless ESC pwm response, linearizing output for PID control, and smoothing the sensor values

Once assembled and tested, i had a lot of data collected from brushless spindle controller, i've used to implements a better control method, a PID control. I've spent long time updating the code to find what was going wrong. Regarding PID, there are a lot of good articles in the web, some implemented also on the Arduino universe. Start your readings from the incredible series of post from Brett, if you want to know more about PID. In this post i want to describe my solution to some of the headache i had to implement: Keep it fast if what you want to control react fast (a spindle is really different from sous-vide or temperature PID room controller). My timing between refresh is now 50ms.Keep it steady, eliminating every distraction from the PID computation (like delays).Linearize the output of the PID, before applying to the ESC to get rid of the PID constants.Try to guess the output value, before enabling PID.Divide the PID constants in aggressive and conservative variants de…

PEATOL/TAIG: the most beautiful affordable metal lathe

I bought a PEATOL/TAIG because i need a small lathe (despite i have a 7x20 lathe) i can operate in my house. I have known about it from the conspicuous fans all over the world.

Here some links if you want to know more about PEATOL/TAIG:
Peatol Machine Tools: the home of PEATOL/LATHE;
Deansphotografica: beautiful projects;
CarterTools: the biggest resource i know about taig;
LeeValley Instruction booklet;

I received it from Peter of Peatol (UK) on August, and now i'm showing it once assembled the base, the motor and it's fully functional. The motor was blue so i repainted to black.
I assembled also the motor mount from aluminium with primitives dovetails. My version of lathe come with powerfeed already installed and a sturdy block of aluminium for raise the entire lathe.

This is my start package:
1015Micro lathe with power feed1030Four jaw chuck, with reversible, heat-treated steel jaws10921/16"-3/8" Jacobs chuck1150Drilling tailstock - lever operated1151Needle bearing centr…

BOXED CNC: Brushless Spindle & Controller, MpIde sketch

Di seguito il link allo sketch per il Fubarino SD (MPIDE) da scaricare:

Download link: PDE SKETCH MPIDE

Richiede le seguenti librerie standard:

I pin utilizzati: LCD RS = 10;LCD E = 11;LCD DB4 = 12;LCD DB5 = 13;LCD DB6 = 14;LCD DB7 = 15;VOLTAGE SENSE = A1CURRENT SENSE = A3RPM INTERRUPT = 4SPINDLE PWM = 9

CNC Embroidery. Elettronica di controllo II

Un avanzamento sull'elettronica di controllo dell'embroidery.

L'elettronica è finalmente nella sua sede. Ho realizzato un contenitore con della plastica, in modo da formare dei compartimenti isolati e delle vie cavo dedicate.

Come previsto, l'elettronica è così composta: 1 x Raspberry PI1 x Wifi key [Perfettamente funzionante con il Raspberry]1 x Arduino Uno3 x PoStep25Alimentatori vari

BOXED CNC: Brushless Spindle & Controller

Per le vacanze di natale ho fatto passi avanti su un progetto che avevo in mente da tempo: la sostituzione del motore della MF70 con un motore brushless.

Un ringraziamento per holcon1 che ha individuato un motore adatto alla conversione: Youtube video

Il sistema è composto da un motore brushless (Hobbyking NTM 3536 - 1800kV - 875W), pilotato con un Turnigy Plush 80A e comandato da un Fubarino SD (un micro Arduino-inspired con un potente PIC a 32 bit, 80Mhz) ed alimentato da un alimentatore 12V da 85A inizialmente destinato ad un server. La velocità massima attesa è di 22kRPM, poco superiore a quella originale della MF70.

Il controller ha 3 modalità di funzionamento, stand-by, manuale e cnc (accetta comandi via usb). Per la modalità manuale c'è un pratico e preciso potenziometro multigiro (non si può abilitare il motore se il potenziometro non è a zero). Per la modalità CNC sono accettati i comandi standard per l'accensione dello spindle, impostazione della velocità, stop dell…