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
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
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
This post is going to be about a graphical user interface for DIY generator’s display I have talked about earlier. Also, this post will be a short one. Two libraries were used to display the interface. The first one is TFT_eSPI. Although it has its own screen drawing/writing functions, its main purpose is to be … Read more
This post is going to be a short one about my Arduino battery charger (based on BQ24295 IC) library. As it was written earlier, the portable DIY generator has a battery charging circuit. Its main component – BQ24295 IC is not a simple Li-Ion/Li-Po charger. Its working parameters or status readings can be transferred through … Read more
