I have added a small additional pcb for my diy amp project, which is dedicated to detect the drop of VDD voltage level and saving the data to EEPROM at reaching of the certain threshold. All how I described here, I used the built-in comparator from PIC168f877a.
It is a pity that I have not added this feature to the main pcb, so now all solutions looks unaesthetic.
Continue readingI guess, that sooner or later any developer has a question in his head – how do I save the data if the supply shut down?
There are some solutions listed:
Another movement towards finishing my “pet” project – an audio amplifier with remote control.
It was a hot, really hot, really very hot summer in 2012 in place where I used to live. I bought some cheap fan, though it was quite powerful, but there were two major drawbacks for me:
Now it is time to provide an appropriate voltage supply for the audio-amplifier. Since I care about the noise and the amplifier is dedicated to work from the outlet only, I decided to move in the linear stabilization direction.
What do I want?
In the last article I reviewed the remote control based on the RC5 protocol, here I’m going to describe how I added it to my audio-amplifier.
Have to say, unlike usually, I did not meet any issues with this, so just describing the process.
Continue readingIt is time to put my hands on the IR protocol.
The goal: To study IR protocol and gain the skills to work with it
Tools: a microcontroller PIC16f877A, an IR receiver TSOP1736(1738), devboard
Describing my struggles with a menu for my home small project – an audio amplifier. The main challenge is that we have just 3 buttons (the encoder), and two of them are actually not buttons but rotation directions.
First of all, I drafted a block diagram with the logic of the operation (right-left is a rotation direction, down – the button is pressed).
In the previous article, there were a number of faulty determinations. Initially, I thought it should be OK for me, but after some debugging, I realized that such a fault percentage is not tolerable for my project.
I was working on my personal project – an audio amplifier and needed the LCD display functions, I had already described in my experiments the way to do so, but there were some flaws, so here we are again. What do we need?
