The Raspberry Pi Pico W is a microcontroller board that is based on the Raspberry Pi Pico, but with the addition of wireless connectivity features. Specifically, the Pico W includes built-in Wi-Fi and Bluetooth, which allows it to connect to the internet and communicate with other devices wirelessly.
The Pico W is powered by a dual-core Arm Cortex-M0+ processor, which runs at a speed of up to 133 MHz. It also includes 264KB of RAM and 2MB of flash memory, which can be used to store programs and data. Additionally, the board has a variety of input/output (I/O) pins, which can be used to connect to sensors, actuators, and other devices.
The Pico W can be programmed using a variety of programming languages and development environments, including MicroPython and C/C++. This makes it a flexible and versatile platform for a wide range of projects, including Internet of Things (IoT) devices, robotics, and more.
Here is one example how to use Raspberry Pi Pico W with micropython, one senzor connected via I2C and simple GUI on the android device using GUI-O via WiFi.
The described device is nearly matchbox-sized board (50 x 24 mm) packed with sensors. Auxilary board is 10x50mm with additional sensors. The module is developed around the Murata ABZ LoRa module, which integrates STM32L072 and samtech SX1276 in tiny 12.5 x 11.6 x 1.76 mm package. The main board is equipped with following sensors:
There are two 1Mbit EEPROMs on-board for local data logging. Additional pins are available for SPI, 2x UART and I2C interface, where even more sensors can be attached.
There are many steps from c source code to cloud data storage. Let’s start…
“To get the end, you must go back to the start” – Grandmother Yelsh
In this contribution I will describe how I started using Espressif ESP8266 with Eclipse and some other details how to store data in “usual” web server. I will not talk about the hardware too much. To follow the tutorial it is enough to have any ESP8266 module connected to serial port on PC either via USB/UART virtual cvom port or directly (rare these days). Two most common possibilities are either module with the USB/UART integrated on-board or separated USB/UART + ESP8266-xx module (usually on breadboard with some additional periphery):
The Pressure, temperature and humidity sensor based on MS5637 HDC1080 originally (Rev. 2) operates via RS485 interface and multidrop HDLC-like protocol. I decided to simplify this for use with Raspberry Pi, arduion or any other mass platforms. First, I took away the RS485 transceiver and second, I simplified the communication.
Once finished (deadline is end of January) this project will become open-source software and hardware.
My quadruple BDC driver for supports up to 4 brushed motors with encoders. Each motor is controlled by its individual closed loop and individual PID gain settings. Additionally, motor speed can also be individually addressed. Analog part of the driver is based on DRV8701P predriver and is controlled by STM32F4 microcontroller.
This LED decoration is for beginners in microcontroller applications. It has 8 LEDs, audio generator and possibility to interconnect with other modules. The PCB is simplified to certain level in order to be manufacturable on a single sided substrate with minimum effort. There are only two wire bridges and one 0 ohm resistor in addition to other components. The LED decoration can be used in school projects or for new-years fun. Of course it’s not limited to X-mas tree. It can be used during Bodhi Day, Hanukkah, Id al-Adha, Winter Solstice celebration, Saturnalia, Yule, Kwanza, Omisoka or any other occasion which might come at the end of the year, when day is short and some LED blinking device might rise your mood.
I recently received 1m of APA102C led strip with 144 leds per meter. I want to use the strip for rotary POV display so I cut the strip in half and tested the performance with a STM32L476RGT nucleo board. The results of the tests are surprising and very promising for my application.
