Mega 4808

Mega 4808 and Optiboot bootloader

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The Mega 4808 can normally programmed over UPDI. The UPDI Interface is great, you need only one data wire and ground, but in some cases you wanna program the microcontroller at your board and you don´t want to make a UPDI Programmer on this board. In this cases you can use a bootloader for programming.


Quality of potentiometer knobs

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For the ESP 32 frontpanel i ordered some potentiometer from china. After they arrived, i am very disappointed with the quality. In the following Post i wanna show you the disadvantages of some to cheap potentiometer knob, so that you don`t order the wrong potentiometer knobs.