Stefan Wagner

Hi, yes that would be great. You can find a version without buck/boost here: https://github.com/wagiminator/ATtiny814-USB-PD-Adapter. The much more complex story that you propose probably contradicts my personal design requirement: It...

Hi, I also got my OLEDs from aliexpress (https://aliexpress.com/item/32957309383.html). Can you give me a more detailed description of the problem?

Then it will probably be the OLED. Presumably it has a different controller chip.

1. Not in the current software version. Feel free to add such a feature, it shouldn't be too difficult. 2. This is not possible because the DFPlayer module only understands...

Sorry, I only use EasyEDA.

You forgot the 10k pull-up resistor on PB5. Without this resistor, a RESET is carried out each time a button is pressed.

Hi, first make sure that your ATtiny is running at 8 MHz internal (set the correct fuses by "Burning bootloader" in the Arduino IDE) and that you are using the...

I'm sure you're right, the crystal is a little overkill for this purpose. With the two pins you can do great things, for example realizing the 12V charge pump with...

That would of course be fantastic. I was annoyed that the calibration bytes cannot be written to. When I find a little more time again, I try to understand your...

I can't get it to work. If you have some time, please have a look: ` // HVSP load flash page void HVSP_loadPage(uint8_t addr_low, uint8_t data_low, uint8_t data_high) { HVSP_sendInstr(addr_low,...