Early in the month, I managed to read my first DS-18B20 temperature sensor.  Over the intervening few weeks, I have been experimenting with using a Python script to read up to ten sensors at a time, and storing the temperatures in a MySQL DB.  Here is a close up of a bank of 11 x DS-18B20 temperature sensors.

It will also display one of the temperatures onto a Nokia 5110 LCD screen.  You can see the bank of 13 x sensors off to the right hand side:

Quick slightly off-set photo of the top of the Z280 chip

Z280 test board - bottom view of the hand soldered wiring

Side view of the top of the Z280 test board

Front cover of the Z280 Technical Manual - November 1989

Back in 2005 July when I was working on testing a lot of my SWASC boat parts I thought it would be handy in having a +5V and +12V DC Bench-top Power Supply Unit (PSU) handy.  After a bit of hunting around online, I found that I just had to put a load on one of the PSU pins, and it would stay powered up, without a load.

Here are a few notes on how I went about this.

Parts used:

An Acer PC PSU converted to a bench 5V & 12V power supply

There are a number of ways to read a 1-wire DS-18B20 temperature sensor via a Raspberry Pi.  As of December 2012, the Wheezy OS contains a kernel loadable module that allows you to directly read them.  At the moment, I won't go into how to do this, as you can read some other peoples in-depth web pages on how they have done this: