The Basics After writing the first blinky program using random delay , now its time to improvise and induce precise delay using timers! The real fun in embedded starts when you start playing with timers (& UARTs , PWM , etc.. ofcourse which we will see in my future posts). I’ll try to keep it [...]
Many guys including me have been facing a problem with KEIL4 where the Interrupts or IRQs wont execute even if the code is correct .. but now I’ve found a simple trick to make the interrupts work. Even I have wasted a long time trying to figure out what the heck was going wrong with [...]
Project Bootstrap – (Yet another xD) DIY 3 Axis CNC Project Bootstrap is OCFreaks’ 2nd Official Project which is – a Homemade DIY CNC Routing and Milling Machine. For those guys who are new to CNC and related stuff lemme give you a formal introduction to ‘CNC Machine’ : CNC stands for ‘Computer Numerical Control’ [...]
This is DIY CNC Interval 2B – Linear Motion Bearings, Motor & Coupling Selection. Linear Motion Bearings , Shafts and Support Blocks For linear translation support I decided to go with 20mmm (dia.) Linear Motion Ball Bearings mounted on 20mm chrome shafts. Per axis 4 Linear Motion Bearings will be used. Open Type Linear Motion [...]
Introduction Hey Folks! Lets make our own Lead Screw End support for our DIY CNCs! I’ll let images do all the talking since therez nothing much to write about xD. So this was my situation : I was having Bearings with ID=10mm , OD=19mm and same kind Flange type bearing with Flange dia=21mm along with [...]
On special request of our readers today we are posting a new tutorial for interfacing HD44780U / KS0066U based 16×2 LCD Module with LPC2148 microcontroller.
Introduction PLL stands for Phase Locked Loop and is used to generate clock pulse given a reference clock input which is generally from a crystal oscillator(or XTAL). Configuring and using PLL in lpc124x MCUs is pretty simple and straight forward. Lpc214x MCUs have 2 PLL blocks viz. PPL0 and PLL1. PLL0 is used to generate [...]
DIY CNC Interval 2A: Leadscrew, Leadnut & Bearing Selection In the first part of this Diy CNC Series I had given a brief introduction on my way of building a CNC. Here I talk on one of the most important part of CNC viz.: leadscrews(& its support bearings) and leadnuts. Leadscrew(or simply precision threaded rod) [...]
Building Blocks of DIY Quadcopter: Introduction & Overview Lately I got involved into another DIY project – A Quadcopter. It was during my exams I got into this xD. And it was during my exams I started researching on Quadcopter. Plenty of information is available on the Internet on multicopters. I had decided on using [...]
DIY CNC Interval 1: Inception I had originally thought(not planned) of building a CNC Machine back in 2011 .. but then it was just in my head since I was noob in mechanical stuff. Frankly speaking at that time I didnt even knew what is a lead screw , linear bearing , coupling , etc.. [...]
