Archive for January, 2014
Real Time Clock – DS1307
For my Topsy Turvy clock project I’ve purchased an I2C clock module based on the DS1307 Real-Time Clock chip. As mentioned this came without a battery to keep the post office happy. Although looking at the current wording of the
Posted in: Topsy Turvy Clock
Tags: Arduino, RTC, Sponsored
More small steppers
The output of my stepper motor feeds into a gearbox which I’ve been told has a ratio of approximatly 64:1. During the research of this project I came across a discussion about why the gear ratios were not exact nice
Posted in: Electronics, Topsy Turvy Clock
Tags: Arduino, stepper motor
Spotting Drills vs centre drills
In MEW 212 Chris Smith from Taunton chastises Harold Hall for using centre drills for starting a hole and recomends using a spotting drill or stub drill instead. This is something that I also do so I thought I’d investigate
Posted in: Drilling
Tags: centre Drill, Drill bits
Arduino Micro Review
The Arduino Micro is one of the newer Arduino models but it does not get much of a mention. Like the Leonardo it has a single microcontroller chip, the ATmega32u4 which is an 8bit controller with 32K of Flash and
Posted in: Uncategorised
Tags: Arduino
Small stepper motors
For my clock project I needed to control the position of the hands. My options were continuously rotating servos or stepper motors. I found some small 28BYJ-48 stepper motors and gearbox with ULN2003 driver boards on the internet so I
Posted in: Topsy Turvy Clock
Tags: Arduino, stepper motor
Smart?
Back in Nov 2012 I backed a project on Kickstarter for a small Arduino like microcontroller system called “Smartduino” which I hoped to use for an internet connected humidity monitor. About this time last year I was expecting to see
Posted in: Electronics
Tags: Arduino, Kickstarter
Metal sculpture in brass, mounted on an 1800s French Coin
