Re: Is stepstick a drop in for pololu?
You may need to go to 0.8v with a stepstick - your motors will tell you! No need to change steps/mm.
View ArticleRe: Is stepstick a drop in for pololu?
Thanks waitaki, With a Pololu sense resistance being .05 ohms and the stepstick being .2 ohms wouldnt it be higher then .8v? Or is there some variable I am missing?
View ArticleRe: Is stepstick a drop in for pololu?
Quotesodonnell Thanks waitaki, With a Pololu sense resistance being .05 ohms and the stepstick being .2 ohms wouldnt it be higher then .8v? Or is there some variable I am missing? A = VREF / (8 * RS),...
View ArticleRe: Is stepstick a drop in for pololu?
QuotecdruThis presumes that you have a StepStick that is built off of the reference design Exactly. It's more than a neglibile "if" and another reason why I recommend to adjust these trimpots not by...
View ArticleRe: Question about 3d printer electronics, power supply
Quotesheepdog43The heated bed runs on a completely separate circuit than everything else. It's easy to run two power supplies like that on a Ramps board.As Cefiar mentioned, the grounds are tied...
View ArticleRe: Arduino UNO for controling?
Hello, I am new here and would like to know if I can use a UNO to control the extruder temp and bed temp only? I have a four axis controller with three additional relay outputs and am using Mach3 I...
View ArticleRe: Arduino UNO for controling?
Quotelanemfg Hello, I am new here and would like to know if I can use a UNO to control the extruder temp and bed temp only? I have a four axis controller with three additional relay outputs and am...
View ArticleRe: Arduino UNO for controling?
QuotelanemfgI am new here and would like to know if I can use a UNO to control the extruder temp and bed temp only? Yes and no. Yes, like you can use a standard firmware and just not send movement...
View ArticleRe: Opto rewiring... Help needed
Hi Chri, my arduino / ramps has arrived (inclusing LCD / SD) Can you point me to a good Arduino sketch for Orca, to start with ? I have never done this, uploading firmware. My Gen6 came pre-installed...
View ArticleRe: Arduino UNO for controling?
QuoteTraumflugNo, like an Uno has no means to read a thermistor or drive a heater. You need additional hardware.Nitpick, but neither does a MEGA2560 or any other setup that uses a shield-like board...
View ArticleRe: Opto rewiring... Help needed
What Kit / LCD ect, did you got ? , opto endstops or mechanical ? Maybe i can prepare a firmware that maybe work, but better is then when we talk a little bit over IRC or so ;) Chri
View ArticleNeed some help with writing code for PWM
I'm looking for someone who can write a clever PWM control based on Atmel Timer1 (Arduino Uno / Nano) My coding skills are as good as non existing when it comes to this. I Have had a look at this...
View ArticleRe: Need some help with writing code for PWM
See [github.com] . heater_init() sets up PWM, heater_set() changes it's value. FAST_PWM chooses between high- and low-frequency PWM. Without the willingness to learn writing code it's probably...
View ArticleRe: Need some help with writing code for PWM
Thanks, Hmm i see the 644 has more timers on board. BTW. In my experiments i did this: void setup() { pinMode(9, OUTPUT); //OC1A pinMode(10, OUTPUT); //OC1B } void loop() { TCCR1A = bit (COM1A0) | bit...
View ArticleRe: Need some help with writing code for PWM
... I'm using a timer- or external-interrupt for starting the ON time and then "delayMicroseconds(pulse_high);" with a variable smaller than the timer base for the pulse duration ... this is precise...
View ArticleRe: Arduino UNO for controling?
Thank all who replied, After I posted my question I kind of thought that I had put it in the wrong place, live and learn. Anyway I got the information that I was seeking.
View ArticleOpto's exchangable ?
As in another Post, I am replacing my Gen6 for Ramps. On the Gen6, the Opto's are 4-wired, so I ordered 3-wire opto's as the Ramps only has 3 contacts. Unfortunately, the dimensions are incompatible...
View ArticleRe: Opto's exchangable ?
The tcst2103 is not a company or a trademark, its a part number. So if its written TCST2013 on both of them, then both are the exact same part and otherwise both identical to each other, and within...
View ArticleRe: Need some help with writing code for PWM
Where did you use that? I'd like to take a look at it. How much dutycycle can you still have at 200kHz? Atmels datasheet is causing a lot of confusion when it comes to Timer1. Nickgammon has a nice...
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