Grumpy News

07.11.17

HC-SR04 Ultrasonic Module Testing Part 1 By: Grumpy Old Tech | 0 Comments | In: Tutorials and Info

I purchased an Arduino starter kit a while ago and this ultrasonic tester came with it. I've pulled together some basic information about the unit and carried out a few tests to see how it performs....

07.11.17

HC-SR04 Ultrasonic Module Testing Part 2 By: Grumpy Old Tech | 0 Comments | In: Tutorials and Info

This is part 2 of the HC-SR04 Ultrasonic Module testing. In this case I have setup the code to use interrupts to generate the trigger pulse and another interrupt to monitor and calculate the echo pulse time.......

07.11.17

ESP-01 Module By: Grumpy | 0 Comments | In: Tutorials and Info

I'm planning to use a ESP-01 WiFi module in a project so have produced this data sheet with the basic info needed to get the thing going ...

26.01.18

Valve (Tube) Tutorial By: Grumpy | 0 Comments | In: Tutorials and Info

I recently uploaded a tutorial on how valves work as an accompaniment to the tutorial series on the Super Heterodyne Radio Receiver. I have also created a series of information sheets that build on that video and sho...

10.02.18

Easy EDA By: Grumpy | 0 Comments | In: Tutorials and Info

Just a quick note about Easy EDA - Great online Schematic and Circuit Board design software, and its free...

16.02.18

What is a Semiconductor By: Grumpy | 0 Comments | In: Tutorials and Info

This is the first in a series of tutorials on semiconductor devices but before we look at the devices, I take a look at what a semiconductor actually is....

24.03.18

Installing the OS on a Raspberry Pi By: Grumpy | 0 Comments | In: Tutorials and Info

In this article I take a look at loading the OS onto a Raspberry Pi...

24.03.18

Setting up Remote Desktop on a Raspberry Pi By: Grumpy | 0 Comments | In: Tutorials and Info

Just a little more information on the basic setup of a Raspberry Pi. If you run your device without a monitor, keyboard and mouse this is going to make life much easier....

24.04.18

Burning the Arduino bootloader By: Grumpy | 0 Comments | In: Tutorials and Info

I ordered some microcontrollers that should have been supplied preloaded with the Arduino bootloader and as it turns out they weren't. As a result I have posted a video on the YouTube channel on how to do this....

29.04.18

Power Supplies Tutorial No.1 (Switch-mode or Linear) By: Grumpy | 0 Comments | In: Tutorials and Info

This is the first in a series of power supply tutorials I am producing. In this article we focus on the difference between switch-mode and linear power supply designs. So lets take a look at the the different ways the...