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Monthly Archives: February 2013
Breadboard works
With my initial hubris about circuit construction dulled by a couple of nasty bugs and failures, I decided to construct my next circuit the old fashioned way — I bread boarded it first. I wanted to do an I2C version … Continue reading
PCB Fab – Breadboard first!
After failing to get the 74LS174 board working, I decided to go with the flow and build a 74HC595-based LCD driver board instead. There are plenty of examples online, from Adafruit to Steve Hobley to Rowan Simms — this will … Continue reading
PCB Fabrication – OK, I over-reached
I decided to tackle my first circuit that includes an IC. I picked an old standby, the Myke Predko 2-wire LCD backpack, where he uses a Hex Buffer (74LS174), wires it as a shift register, and then uses a diode/resistor … Continue reading
CNC – Head crash!
There are some days when things just don’t turn out right. I needed to solve the motor startup problem, so I sanded off the white paint (I’d used some really old WiteOut — yuck) and re-painted the shaft, this time … Continue reading
CNC – ship shape and Bristol fashion
I went out to the CNC this morning, all ready to get down to cutting. I had a test pattern to cut, and a scaled-down version of my nemesis, The Pumpkin, too. So of course I spent the whole day … Continue reading
CNC Feeds and Speeds
Now that I have router speed control, it’s time to start thinking about the actual cutting speeds I should be using, rather than just running everything full-out. I searched around, and this site had a pretty good rule-of-thumb for calculating … Continue reading
Posted in Knowledge, Making, Technology, Woodworking
Tagged CNC, Configuration, Super-PID
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iOS Development Workflow
I just had my yearly stress-out about my app expiring. Apple warns you for about a month before the thing expires, and of course I wait until the last minute every time. Here’s the workflow that worked, first try, once … Continue reading
CNC – At last!
The CNC machine is functional. I had been on a bit of a mission lately, to get the machine up and running. Among things that needed to be fixed, replaced, or installed: – The router bearings were going out, so … Continue reading
Posted in Electronics, Knowledge, Making, Technology, Woodworking
Tagged CNC, Hall Effect switches, Router, Super-PID
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PCB Fabrication – Getting the hang of it
With my first PCB under my belt, I was ready to etch a board for something I really need. I took the lessons learned last week, and was able to produce a really nice result this time. This is a … Continue reading