Mowing season end

In 2018 the automower worked for 516 hours. By October 2019 the count is at 960 hours, so it has worked 444 hours during the 2019 season.

The outer shell is removable - so all the grass clippings can be cleaned off...

Time for a winter break, back to work in May 2020.

Mowers gonna mow

The Automower logged 516 hours last season. Now in action again with new sharp blades.

Arduino MKR Zero + Ethernet Shield

Here's a new revision of the RF-mux board, with a 10-pin ribbon cable for +5V, +3.3V, and SPI-signals from an Arduino MKR Zero.

Arduino stack: Ethernet shield, MKR Zero, and MKR proto shield

Geothermal well drilling

Time-code transmitter

RF power amplifier of DCF77 modulated time-code transmitter.

White Rabbit Beer


Tattarisuo racing

Red Red Light

Previously only seen in Oslo, but now also in Helsinki: two red men are better than one!

Warning! Yes! No!

Motorboat-HOWTO, short version:

a good servant but a bad master?

Seen on the bus today:

Yep, that's a GPS-screen top left. No need for the driver to know left from right, where the bus is, the route, or think much anything any more.

Back in the Good Old Days if you took a taxi the driver was actually supposed to know where you were going. Not so any more, especially at the airport. Given an address, the driver will probably not know which city or suburb to go to. After you write down your address on a piece of paper (been there, done that), since the driver speaks neither of our domestic languages, the journey proceeds exactly along the GPS trail. If they do the same with buses, install satellite-navigation everywhere, will it be good or bad?

How long before someone drives a bus into the water or off a cliff?

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