lkptrusted.blogg.se - Lsusb esp8266

I am using three components for my project.

After a day in the office, you open the door to your apartment and… 50 DegC 🙁 I looked for a solution to cool down home right after i left the office – with my phone – using MQTT 😉 Hardware We had some very (very!) hot days here in Sydney, up to 40 DegC over several days. It has some very nice features like progress bars, several graph commands (lines, shapes etc.), pictures and of text. This makes it very easy to update the code without connecting the MCU via USB to the host. No need to set the credentials inside of your code. The configuration will be saved in the EEPROM. Scan for networks, select one and enter the password. You can connect to this AP and a caption portal will open. If the ESP is unconfigured or the AP is not reachable, it will start an access point by its own. I will handle the configuration and connection to a WiFi network. I am using the awesome WifiManager library. In this blog post, I’ll show you a small Arduino code which is providing the basic functionality for my next projects. I get commissions for purchases made through links in this table.In a previous blog post I introduced to you the D-duino ESP8266 boards.

The following table gives you an overview of all components and parts that I used for this tutorial, but you only need one Raspberry Pi and one DHT temperature and humidity sensor.

If the Raspberry Pi is connected via USB directly to the socket than you can use the power supply via the USB connection to the Raspberry Pi to power both the Pi and the Arduino.

In case of you used Arduino Uno we use the DC barrel power jack. Good to know that there are two other possibilities to save the power supply as you can read in the different article about the micro-controller: Arduino Mega, Arduino Uno, Arduino Nano. Also this was my first idea and I tried this possibility, but the power supply of the Raspberry Pi broke down and the Pi shut down. In this case you have to find another power supply for the Arduino because the PC or Laptop is not able to supply both the Raspberry Pi (~ 700mA/5volt) and the Arduino (~ 40-50mA/5volt).

The Raspberry Pi is connected via USB to a PC or Laptop.

In general we have to differ between two use cases. But in case of the Arduino the USB cable connection is blocked by the connection to the Raspberry Pi. We can power the Raspberry Pi as usual about the micro USB port on the side of the unit. The power supply for the Pi is not restricted by the serial communication. Now let us talk about the power supply for the Raspberry Pi and the Arduino. As mentioned before we use an USB cable for the Arduino to Raspberry Pi communication.