Bottle Plotter BottlePlotter.cz I have noticed that, it is quite common in group of small wine producers, that they don't use bottle labels. Usually they just draw some basic info on the bottle with special ( Edding ) paint marker. That is how I got this idea. Everybody can get paper label printed, but what about bottle plotter. CNC that would used paint marker as plotter to plot the label…
Yet Another E-Ink Picture Frame In our family we have group on WhatsApp . To simply share some photos and updates. What bothers me is that our Grandma does not have smartphone, computer even internet and therefore she can not access WhatsApp feed. At first I was thinking about some way how to provide convenient way to share pictures of our children with her. One of the options was to use some old…
Building small secondary display And some lesson about modularity Why? I'm not a big fan of multiple screens, but where it's almost neccessity for me is when Im doing some audio for movie post-production. Main display is used for the audio suite control and on secondary I have video to see what's going on. What most people do is add secondary display next to the main, but this takes table space…
Writing and testing I have table with the values that should be written to into the EEPROM which needed some splitting and padding in order to get it into correct format. Then I added addresses on which data should be written. In this case it should be first 16 channels, that all I need even if there is possible to store up to 32, but the 820-830MHz bandwidth is too narrow for more than 16…
PLL At the beginning when I was looking at the I2C communication I have found out which parts of it talks with PLL, but then I carry on as I did not expect it I will need to understand it better and also since I have very vague idea about what PLL actually is. But now I have to find out in order to compute and load proper data for it into the memory. From the microphone schematics I got the basic…
EEPROM So, I was able to connect to I2C on the board, see the communication and understand it, little bit. Now the question is, If I'm also able to read the EEPROM without removing it from PCB. Chip is quite small and de/soldering would be painful. Every time you desolder SMT component there is quite high risk that you might remove also the layer of copper which results in destruction of PCB, or…
Understanding what is going on I2C In the previous step I hooked up my logic analyzer on the I2C to see how the communication inside the mic actually looks like. Partially because I want to understand better how to reprogram the microphones EEPROM but also because I'm just curious and want to see what is really going on. After powering up the microphone this is the output from I2C. write to 0x3E…
I'm somehow interested in audio production. But not it more my pet hobby, nothing that would generate decent income. This means I usually don't want to spend much of money on the equipment. Right about now is quite good time to get some old-ish wireless audio equipment for decent price. The reason is that there was change ( info ) in wireless bands and bands that used to be free before are not…