Conversion complete

The conversion of all articles from Joomla to WordPress is done. That is; it is acceptable for me. Still some articles have to be update with some pictures, but all relevant articles are there. It is possible to download files


March 2024 the AFSM content is converted to WordPress. The old Joomla site will be deleted when all articles are converted to the new domain.

Embedded systems

Reading on the internet about embedded systems, the arduino boards are popular because of the easy way of programming. The embedded software engineers are not enthusiastic about the use of Arduino boards, stronger; some of them are just negative about the

Internet Of Things

Internet of Things I found the populair ESP8266/ESP-07 WiFi shield. The WiFi shield is communicating via TX/RX hardware serial with the MEGA board. I programmed the ESP-07 module to read data from the board and send it to the internet by Wifi

Millis() roll over

From the start to 47,9 days the value of millis() rollover will occur and millis() starts with zero again. Every mS the value of millis() is increased by one. It is an unsigned long (32bits). With the use of timers

pH and TDS measurements interference

I need to measure both pH and the TDS in just one system for my salt water fish tank. But it is a known problem that the pH interface and the TDS interface interference when they are measuring in the same