On 12/04/2020 07:12, Jim GM4DHJ ... wrote:
On 11/04/2020 21:14, Bob Eager wrote:
On Sat, 11 Apr 2020 20:10:54 +0100, T i m wrote:

Most of my recent 'electronics' projects have revolved around the
Arduino micro controllers but there is also a certain purity with
something that just works made from discrete components.

I built one of these, for fun (it does work):

Â* https://shop.evilmadscientist.com/652

how old hat is the triple five timer.....

But an interesting device in that it has both
analogue and digital parts!

I used one about 5 years ago to make up the
standard design for a capacitance meter (and
how I now regret in a periodical clear out of
consigning the box of Baekelite meters to the skip)