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Need ideas to provide pulsetrain to spin stepper motor
I have a NEMA 34 stepper motor and Compumotor ZETA4 driver. I want to provide a pulsetrain to use the stepper motor in a more conventional application.   I have tested the...
Saturday, 21 July 2018 - 00:43
SPI programming interfered by other circuitry
I am populating a custom PC board a section at a time and testing each section before doing the next. I added a couple ICs that connect to SCK and MOSI. After that when I try to...
Monday, 11 December 2017 - 05:38
Solved: USB communication issue
Hello everyone!   This may be more of a general AVR issue than Arduino, but I'm using an Arduino in the process, so I posted here.   I am working on a project that...
Thursday, 7 December 2017 - 17:34
Please help with SD Card reader connections...
I have various motion controlled devices, from a Bridgeport CNC machine, to a laser cutter, 3d printer, and pick-n-place project. Many use Ardiunos for a simple CNC control. I...
Saturday, 29 July 2017 - 19:34
Communicating with multiple USART devices
I'm in the early stages of designing a specialized automated assembly machine. It utilizes six axes - all controlled by stepper motors. I am planning to use two ATmega328 MCUs...
Thursday, 2 February 2017 - 19:05
Brainstorming "Teach" mode for CNC Pick&Place machine
I'm in the process of making a rudimentary Pick & Place machine for PCB assembly. Since I'm a mechanical engineer and have my own CNC machine shop, the mechanics are the "easy...
Friday, 2 December 2016 - 06:16
Wanting grbl without host PC
I'm having a difficult time finding the answer to some questions I have regarding Arduino, grbl, and USB communication. Part of the problem may be that I don't know enough to...
Sunday, 18 September 2016 - 21:54
Custom GUI for "grbl"
Many of you may already know I have a small CNC machine shop. I have converted an old (mid '70s era) Bridgeport BOSS CNC to use MACH3 instead of the antiquated controller. I have...
Monday, 20 June 2016 - 16:03
Can I use AS4 to compile grbl?
Hello, I am a neophyte in regards to AVR Studio. I have it primarily to upload hex files onto ATtiny461s for a customer's project/product. It is version 4 (I have not upgraded...
Friday, 10 June 2016 - 16:56
Synchronizing two BLDC motors powered by hobby ESCs
Hello everyone. It's been a while since my last post. Many of you may remember my tachometer project that you AVR Freaks were so helpful with me completing: https://www.avrfreaks....
Monday, 18 January 2016 - 23:13
My Manifold Pressure Gauge - putting it all together
Since I am a mechanical engineer, a lot of the thinking required for programming these AVRs hurts my head. Not literally, but I find I spend a lot of time wrestling with thinking...
Friday, 14 March 2014 - 01:51
Syncronizing 2 R/C airplane motors
Hello everyone, I want to brainstorm about synchronizing two BLDC motors intended for R/C airplanes (although I am not using them for R/C). The controllers would presumably use...
Sunday, 9 February 2014 - 22:18

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