After the movement in a new flat i need to restructure my working desk. For enough space for the PCB parts and the whole stuff i decide to go up and mount some Ikea eket cabinets at the wall.
The 3D printed holder for the ESP 32 is finished and needs a good looking frontpanel.
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.
In most every project your microcontroller does not run all the time. You also don´t want to waste battery capacity, so you should set your microcontroller into a sleep mode.
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.
After a time my Braun 320s-4 shaver still not have the endurance. The battery is after 2-3 minutes empty. So i decide to change the battery inside.
You wanna use the Arduino serial (UART) with a Mega 4808 board? No, problem. The Mega 4808 has three serial (UART) interfaces. Here you can read on which pins you can use the serial (UART) interface and how to use it.
For testing your code for the Mega 4808 with Arduino you need a board where every pin is accesable.
The PCB for the ESP32 frontplate is done and works. Now its time to build a enclosure for it.
For a time i build the iniversal audio amplifier with a PT2033 which can be programmed over I²C. Now its time to make a frontpanel to control this amplifier