Raspberry Pi Pico Essentials

in het hoofdstuk 10 Wi-Fi with Rapberry Pi Pico
blz 209 en blz 214
na de instructie while True:
is het beter een volgende if in te bouwen:
if uart.any() > 0:
anders zijn er problemen bij het lezen van lege lijnen
bij de instructie buf.decode(`UTF-8`)

A very complete introduction to the Raspberry Pi Pico and its uses. After a brief description of the Pico and a comparison to other microcontrollers, the books starts with some basic Python programming examples using the Pico. This is followed by about 200 pages of of some 59 projects. These start with the very simple hardware projects usually used to introduce RPi projects, involving LEDs. However, after the first one, these are more imaginative than usual. From there on, the book introduces more complex projects that explore a wide range of Pico capabilities. There is something for everyone here.

The comments of Mr Bruno are totally wrong. The LCD operates in two modes: READ and WRITE. When the R/W pin is connected to GND then the LCD operates in READ mode. In this mode, all pins of the LCD are inputs. As such, there is no way that the RS pin of the LCD can damage the PICO pin because RS is not an output pin. If however by mistake you happen to connect the R/W pin to +V or leave it unconnected (pulled-up by default) and apply power to the device, then the LCD will be in WRITE mode and the RS pin will be an output (e.g. the BUSY state of the LCD) which may of-course damage a +3.3V input pin of the Pico. The circuit given by the author is therefore totally SAFE as long as it is connected as shown in the book.