The driver has built-in protection against over-current due to mechanical reasons. It was made to shut down if the stepper get stuck. If you are cooking the driver, its purely electrical.by Hazer - General
Quotetjb1 Engineering is free eh? In open-source, it is.by Hazer - General
After reading this, let me give a different perspective. Just like everyone else, when I first read the initial post I was thinking "what is he getting at?". I thought he was talking about printers in general. Of which, IMHO, they are hardly 500% markup from material. Anyway, after seeing his Ebay stuff I can get where he is coming from. He sells a slightly different J-head for $25, or $17 as aby Hazer - General
Check this out: Marlin I had same problem. I tracked it down to the fan pin using an analog write. Quick way to confirm is to define your fan pin as -1 to see if it fixes the servo signal.by Hazer - Reprappers
In Marlin, in ultra_lcd.cpp there is a define called: #define ENCODER_STEPS_PER_MENU_ITEM 5 #ifndef ENCODER_PULSES_PER_STEP #define ENCODER_PULSES_PER_STEP 1 #endif I had different problems. Menu was OK, but values changed too fast. I changed my encoder_pulses_per_step to 4 and Menu_item to 2. This made moving the axis much more manageable.by Hazer - RAMPS Electronics
I am just stating whats in the Marlin firmware. Since that is what most printers are mainstreaming towards, I thought it was relevant. Here is how Marlin does its calculations: Triangle math A^2 + B^2 = C^2. Since the shoulders and end effector of Rostock never move in the X-Y plane, they are removed from the calculation altogether. When Marlin processes a G1 command, it already knows theby Hazer - Delta Machines
Interesting first post for me. I have been following this for over a month. Let me see if I can clear up something about why I believe A2 thinks there is error in Delta movement (regardless of slop or difference between LISA vs Rostock). Say you are looking at the top of the machine. The rods/columns are arranged as this: column A is lower left corner, column B is lower right corner, and columnby Hazer - Delta Machines