Electroteach

Assembler for 6809
get lwtools here

experimental source on github
download 4.15, extract, build and install.
shell asm will assemble the source

q910 model
WARNING: Radioactive material Americium 241 1.0 microcuries. Do not
tamper with sealed source. When this alarm is no longer required, it's
recommended that the preferred method of disposal for small numbers
of Smoke Alarms is to include them in the domestic rubbish.

Trying to find circuit diagram for a kit that includes a pcb marked ETI 162. The PCB also has text Dick Smith Elelectronics and ZA 1581. It is a regulated power supply.

eti magazines

Bike tyres
My current (push) bikes have tyres with widths of

1. 32
2. 35
3. 38

millimetres. I have had several tyres donated. I take the opportunity to rotate the sizes when I have to fix a flat tyre. Currently, the front tyre is being fixed. There were lots of very small stones embedded in the rubber and one that had penetrated the tyre. The usual water test does not reveal any obvious leak but the valve may not have been closed properly.

analog filter prototypes

newly discovered J language

radio clocks in Australia

sisal

gippstech
wandarc
emdrc

Linux questions
How to see the upgrades on LM / Ubuntu that have recently been performed.
Use the list as a learning exercise to discover what they do.