Finally, it happened – the generator is (kind of) finished. It took a bit of time after the previous post to bring the device to its final state. Quite a lot was done from the last time – mostly it was firmware’s finishing touches. I had to make sure that everything, especially LCD interface, works … Read more
Yet another step towards finishing the DIY generator. As the previous one, this post is also going to be quite short, because there is not much to write about. Electronics devices usually have some kind of enclosure, so no exception is my generator. As it is portable device, the housing needs to be as small … Read more
Today’s post is going to be about two little things. The first one – AD9833 Arduino library which is used to set IC’s output parameters. The second one – I have found out some interesting things about +- 12V converter’s output noise and a way to reduce it. Links to project’s all posts VCA822 Gain … Read more
This post will be a small update on the generator’s project. As I have received the PCBs the next logical step is to solder one PCB and test it out. So, I did exactly that. I thought that the best way to start soldering everything would be from power circuits – if they work correctly, … Read more
Finally, I have managed to design a PCB for my DIY generator based on an AD9833 with additional analog circuity and controlled by an ESP32 MCU with a touchscreen-based user interface. Because everything that I have used in this design were more or less mentioned in the earlier posts, this one will be a short … Read more
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
