June 2020 Meeting Report
Progsig 9th June 2020.
Alex
-described the repair of garden christmas lights.
-ESP32 non-linearity of ADC
-some old STM32 dev boards maple etc. - one with display board still not working
-hacked two pots into a dual gang pot to provide a fine adjust for a buck boost DC converter module. This converter also benefits from an external output filter. The filter effectiveness can be checked with a scope.
Here's the converter and filter circuit :
Steve
- suggested the STM NUCLEO-L432KC as a high performance micro dev board with lots of memory.
It is an ARM M4 in an Arduino Nano form factor,
Includes ST LINK programmer/debugger.
80MHz
256K FLASH
64K SRAM
Price is $17 delivered from RS Components.
Can be programmed with mbed - the online development environment.
POST MEETING NOTE -
I logged into mbed and selected the new board type.
I re-compiled a 'blinky' program as used on a previous Nucleo board.
I plugged the NUCLEO-L432KC into my USB port, it appears as a USB device, right click & selected download.
Code ran first time with LED blinking at the defined rate.
That's the way it should be !