A 40MHz control problem recently got me thinking again about lower frequency vs 2.4GHz control. I’m still using 35MHz as are a few others locally, as well as 40MHz and 72MHz. Local Testing I live about 2KM from the flying field so I can listen or test for radio activity […]
Solved Recently I transferred the blog to a faster machine. A AMD dual-core system that I’ve had for a few years. This significantly improved the page load times. On the bench for a couple of weeks it worked fine; out in the open with little load. Once in service and […]
Solved Recently I found that for periods WordPress would become very slow, often taking more than a minute to do anything. This seemed to begin for no apparent reason; fine one minute and dead the next. Then it would come right and be fine for a while. Because the site […]
This is a low cost 2 channel smart relay module ideal for hobbyists and educational school projects as well as lighting and automation for home, commercial and industrial. It can be connected to provide power switching for Arduino, Raspberry Pi and other controllers. Use the standard configuration or reprogram it […]
30 years ago I was about 18 and had just started work doing an electrical apprenticeship with the local power authority. Life was really pretty easy; a 9 hour work day, regular pay, weekends and public holidays off. Things have changed a bit now with higher prices, never enough time […]
This is from a low profile A-Open case that’s quite a few years old now but still in as-new condition and has been working well. The power supply sat on standby for some time and when it was needed did not go. Being a low profile case, it’s not possible […]
2.4G band use increasing I have done a lot of surveying around my area, noting a big increase in 2.4G wifi over the last couple of years. What you can easily detect with a phone or laptop is only the tip of the iceberg. With a decent antenna or a […]
A computer nightmare I needed to have another look at my original CPU_3A3 68HC11F1 module. I was assembling a few of these and needed to test them. Last time I did this, 5 or 6 years ago, I still had a laptop running Windows-98 and a bootloader program that was […]