Raspberry Pico Adventures

The LCD 12864-06D is a graphic (128 by 64 pixels) monochrome Liquid Crystal Display. You will find it in AliExpress and many other stores, but information on it is scarce. An intriguing point is that ads mention that it is graphic and has a Chinese font. In this post I will present the information I have gathered and share some sample code (using the unofficial RP2040 support for Arduino by  Earle F. Phillhoower III).

 The DS18B20 is an easily found temperature sensor, both the sensor itself (it looks like a transistor) and as a waterproof probe with the sensor inside a metallic case. What many don't know is that a large part of the sensors sold are not original parts and many have serious defects.

In this post we will see how to access a REST API with the Raspberry Pi Pico W, using the SDK C/C++ and MicroPython. An example of a call to a RESP API, using Postman Basically, a REST API is uses an HTTP method (like GET and POST) to access and manipulate "resources".

Banana Pi is known for its alternatives to Raspberry Pi SBCs (single board computers). Now they have launched a board with the same pinout and form factor as the Pi Pico, but with an ESP32-S3 microcontroller. Let's take a look at it.

 In an unexpected move, the Raspberry Foundation  announced the Raspberry Pi Debug Probe , an interesting accessory for the Pico boards (and other boards with ARM microcontrollers). The Debug Probe board A few days later, they announced the Raspbery Pi Pico Windows Installer for easier installation of the SDK and the complete toolchain needed for developing C/C++ for the Picos under Windows.

We will now take a look at TCP communication. There are client and server examples at pico-examples, let's see if we can understand what is done.

When the Raspberry Pi Pico W was launched (seven months ago), a somewhat surprise was that the hardware supported Bluetooth but the software did not. All that was said then was that it maybe added in the future. At the beginning of this year, BT support was included in the plans for version 1.5 of the C/C++ SDK , expected for the end of January . It took a few days more, but the new SDK version was released and yes, it includes support for Bluetooth in the Pico W, but it is labeled as BETA . It also includes other important fixes and enhancements.