User Profile for Hendrik
Name: Hendrik
Join Date: 01/09/2007
Member Title: Guru
Last Visit: 04/17/2020 10:38 AM
Last Post Date: 04/14/2020 8:43 AM
Signature: Never do today what you can put of until tomorrow - Student motto
Location: Centurion, South Africa
Total Posts: 3921 (97 Good Answers)
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I did irrigation network design software 25 or more years ago. This software was windonized and is currently used for many irrigation designs all over the world. check it out at http:/

Member of User Group Popular Science
Member Since: 09/10/2007
Membership Type:
Biology (since 09/10/2007)
Member Message:

New Member

Member of User Group Hobbies
Member Since: 09/24/2007
Membership Type:
Musician (since 09/24/2007)
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New Member

Play a lot of instruments. The trumpet and sax was my favorite. The violin not for human consumption. These days mainly a keyboard.

Member of User Group APIX Pilot Plant Design Project
Member Since: 12/19/2007
Membership Type:
Member (since 12/19/2007)
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New Member

Member of User Group Hobbies
Member Since: 01/22/2009
Membership Type:
CNC (since 01/22/2009)
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Use CNC as a hobby and up to production and developing.

The "hobby" machines made from scrap manual engravers and scrap pen plotters are also used for production work.

Machines used : self build , Isel , Iri & other. Have developed a software driver to achieve the (uniform) functionality needed for production work.

At the moment upgrading all machines to Galil DMC controllers using stepper motors but will upgrade to servos soon.

I am impressed with the Galil controller it seems that feed rates can be increased substantially because of all the available HP. On the same stepper machine and power supply the production increase on a test sample seems to be more than 10 fold.

Member of User Group Fans of Old Computers
Member Since: 09/23/2010
Membership Type:
ZX-81 (since 09/23/2010)
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I am 66 now and retired.

Without computers for the first 26 years of my life except for a slide rule and a coffee mill Facit.

Not much of a ZX81 fan, Bought one with a Chess game , Never finished any game on it. After the troublesome loading from tape I usually fell asleep at the 3rd move (the ZX81 was too slow for words)

Since 1970m I was working on a range Mainframes and HP PC's (a HP9845 -from about 1977 as a shared PC)

In about 1979/80 I bought my own PC - the fabulous HP85 - (16K additional memory and a full house of 8K ROM's including assembler)

With the HP85 I could suddenly do things which I could not succeed in work time. (Even almost divorced)


Mechanisation program

Irrigation demand

Irrigation design (have a look at www.gwis,co,za for the current version)


Beam design etc etc

Big data base

Upgraded to HP86b (96K memory)

With this I had a big GIS Water use data base running

Member of User Group CR4 Fans
Member Since: 09/14/2013
Membership Type: CR4 Fan (since 09/14/2013)
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