Note! - I have learned a great deal about electronics and in particular Linux in small router boxes etc by copying the published work of other enthusiasts.
So this is my attempt to "give something back" - especially aimed at helping novice users like me.
These are my project notes. They are mainly here for backup purposes and to aid my memory but if you find them useful please email me


A hydroponic EC probe that can be in the water all the time
Circuits and Pulses
EC tests of Various Mixtures
Update - calibrate from a web page - add sonar ranger

Old Projects

1) Aviosys IP 9100 video server - how to place pictures on a webpage

2) How to use Visual Basic to view the pictures in the Aviosys IP9x00 and set channels in the IP9100

3) Investigating the Linux based Sweex Broadband Router

4) "Tele-presence" project - Adding a PIC 18F877A to the Sweex Broadband Router

5) Experiments with the Linksys NSLU2 (The Slug)

6) Experiments with an O2 Joggler

7) Aviosys 9203 stepper motor - control by Linux

8) Publish the home web server dynamic IP address

9) Byvac BV4213 used to convert an old scanner into a linear camera mover

10) Electric fence monitor

11) Weather station on nslu2

12a) RFID Chicken name detector for nest box - with nslu2 and Joggler
12b) PIR chicken sensor

13) Solar Hot water system - plotting to a web page

14) Photovoltaic power generation - plotting to a web page

15) Timelapse of webcam pictures using javascript slideshow

16) Powered Chicken Hatch with Remote Control

17) Raspberry Pi projects

18) Attaching a usb postal scale to (1) A Raspberry Pi (2) A NSLU2 (Slug)

19) Easycap for OpenWrt Attitude-adjustment on nslu2 (Slug) and WR703N

20) Arduino speaking variometer

21) Sending mail from a router

22) Sending data between a Linux router and an Arduino

23) Programming ARM (STM32F103C8T6) boards in the Arduino IDE

24) Experiments with the ESP8266 WiFi boards

25) Testing IOT-playground (with a Macintosh)

26) Testing WS2812 8 LED 3 colour bar

27) Drive a 8x40 LED array with a Raspberry Pi zero

28) Drive a 16x64 LED array with an Arduino using serial data from an ESP8266 fed by a curl command in a Linux box

29) Reprogram a Sonoff ESP8266 mains switch for Amazon Alexa control

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