Electronics Projects
I am a firm believer in “standing on the shoulders of giants” and borrowing ideas that already exist and combining, building on them or delivering your own take on them – after all why re-invent the wheel, just because you happen to want to use a wheel in your design? This was good enough for…
This post covers the electronics side of an add-on feature for my milling machine’s rotary table. A while back I saw the Division Master product and thought this was a great idea, however I had no intention of paying the £230.00 ($345.00) price for an assembled unit or £180.00 ($270.00) for a kit of parts to…
This is an update and move of a post that was originally posted on my PCB CNC Machine Blog. The PMinMO website has unfortunately now shut down due to the owner suffering from health issues, although it can still be accessed via Wayback machine. The PMinMO Toshiba 6560AHQ board design was a collaboration with HWML.com.…
I have been looking at ways of using the PWM output of GRBL to control a brushless RC motor via an ESC. Now there is a commercial option available from Logicnc, but I object to paying $34.99 for something that can potentially be made for pennies. I came across a post by Kretov on the…
I have recently been reading about the use of timers on AVR chips over at Max Embedded and thought this would be a perfect opportunity to update my binary clock once again. I decided to make use of the CTC option, whereby it clears a timer on compare, you set a value for the timer to…
I recently make a couple of breakout boards for USB connections to use on a breadboard, these are just a male and a female type A USB connector and some header pins soldered to some strip-board. Rear One thing that irks me, when I am prototyping a new circuit, is that when I need to…
I have since had some more thoughts on this subject and after counting the connections again, decided that it could be implemented with an ATtiny85/45/25 DIP 8 chip. After downloading the DRO_2_2 source code from Yuriy’s website and compiling it up noticed that it will fit on an ATtiny85 or 45, but not on a 25 because…
I recently re-read an article, I had originally read some time ago, about an arduino clock source using a single wire, on Instructables by relic1974, and thought that this might possibly be a more accurate clock signal than the tone value I am currently using. The internal timer is not overly accurate and there seems to…
Having settled on some Igaging linear scales and Yuriy Krushelnytskiy’s DIY DRO for Android as mentioned in my Mini Mill posting I set about making the board itself a cheaper prospect. I am not a big fan of the Arduino boards and their associated shields, as they use a non-standard pin spacing from one side to the other, which is incompatible…
Well I finally soldered it all up after finalising the board layout and ironing out bugs in the software. Final Schematic: Final Board Layout: Here are the parts: BOM: 1 x Perfboard 1 x ATtiny44 MCU 17 x LEDs 2 x switches 2 x 10K resistors 2 x 7 pin female headers 2 x 12…