Let’s continue building a signal generator and take another step by making a basic web interface. In this context ‘basic’ means a starting point from which interface could be made more advanced with added features, logic, design elements etc. Note, I started talking about WEB interface, which means that I have almost decided on an … Read more
Yet another step towards DIY signal generator’s design finish line. This time it is a battery charging circuit based on a Texas Instruments BQ24295 chip. In previous parts I have mentioned that the generator needs to be powered from a battery. So, this circuit is going to be the one responsible for making it possible. … Read more
Today’s continuation of a DIY signal generator based on an AD9833 is going to be about a dual rail 12V power supply based on TPS65131 IC. In the previous part I have talked about a 5V dual power supply used to power the variable gain amplifier and other circuity. This dual 12V PSU will be … Read more
Today’s continuation of the DIY signal generator based on an AD9833 is going to be about a dual rail 5V power supply. In the first part I have introduced you to a variable gain amplifier stage. The power supply is going to be used to power the mentioned operational amplifier. Links to project’s all posts … Read more
Today I am going to continue with the DIY signal generator based on the AD9833 IC where I have left in the second part. Earlier, I have talked about how I had built second analog signal generator’s stage – offset adding circuit. Because the generator is going to be digital, potentiometers should be replaced by … Read more
In this post I am going to continue with the DIY signal generator based on the AD9833 IC where I have left in the previous part. Earlier, I have talked how I had built my first analog signal generator’s stage – variable gain amplification circuit. Usually, a generator needs to have an ability to change … Read more
As the name suggests, I am going to write about a self-made signal generator based on an AD9833 IC. Also, this is going to be a multi part post, as it is impossible to design and make a fully functional device within a short period of time and even write a single huge blog post. … Read more
Today I will talk about several problems I had after designing a custom PCB for an ESP-32 module. This PCB was used in Wi-Fi connected switch used for controlling LED strip Wi-Fi enabled module. The idea was to make a PCB for a Wi-Fi switch. The switch itself was modified commercially available wall switch made … Read more
A regular camera stand is always handy when you need to shoot still photos. But three-legged stand is not very convenient if you want to make some top-view photos of an object placed on a table. For this reason, I have 3D printed a desk stand. Part List 25mm (~1 inch) outer diameter stainless steel … Read more
Today I am going to talk about a DIY 3D printed desk drill press adapter for a rotary tool (Dremel or a similar tool). This holder can be used for drilling small diameter holes (usually 0.2 – 3mm in diameter). The need for such device arose when I had to drill some holes in a … Read more
