After having published my post about how to implement a webserver on the esp32 chip, some readers correctly warned me that everyone, once connected to the wifi network, could control the relay and asked me how to limit access to the webpage. A classic solution (that I also used in this previous tutorial) is to ask the user…
The Eachine H8 mini quadcopter (here on Banggood) is without dubt one of the most popular quadcopters, both for its low price (10-15€) and for its good performance in terms of speed and flight time. This quadcopter does not include a camera and therefore it cannot be used to flight in FPV (First Person View) mode… in this post I’m going…
One of the most fun (and hard! 😉 ) way to drive a quadcopter (or drone, as it’s often called) is FPV (first-person view): thanks to a camera on the front of your quadcopter and a receiver that displays the video signal in realtime, you can drive the quadcopter as you were sitting on it.…
If you follow my blog, you probably noticed that I use different online services to make my PCBs… it’s a way to test them in terms of quality and production time. On the advice of my friend Mauro, I recently chose PCBWay to produce some PCBs for my future projects. The procedure for sending a new order is…
Wemos is a chinese manufacturer of IoT products, well known for its D1 Mini family, that includes boards based on the ESP-8266EX chip and expansion shields. Some weeks ago, Wemos announced a board based on the new ESP32 chip, named LOLIN32. This board hosts an ESP-WROOM-32 module and can be powered by a single cell (1S) LiPo battery. The board can…
Some weeks ago I blogged about my project of a minimal board based on the CH340G chip. After some tests, I slightly modified the project: [checklist] I added two leds that blink when data are transmitted/received I added a jumper that allows to decide if you want power supply (5V) in the connector or not added a 10nF capacitor to make…
STM32 is a family of 32bit microcontrollers manufactured by STMicroelectronics and based on the ARM Cortex M core. The STM32 family is divided into different lines of microcontrollers (L0-1-4, F0-1-2…) depending on their features and the use they are designed for: These microcontroller are widely used in the industrial world… for example both Pebble watches and Fitbit bracelets are based on STM32…
One of the most popular projects among the ones included in my tutorial about the enc28j60 chip is fore sure WebRelay. This project allows to control an output pin of Arduino using a simple web page, designed to be accessed also using your smartphone. Today I’m going to show you how to implement a similar project with the…
On this site I’ve already posted about the CH340G chip, manufactured by a chinese company and often adopted as a cheap solution when a USB -> serial converter is needed. As the chip package (SOP16) is quite easy to solder, I ordered some ICs from AliExpress and I designed a minimal demoboard, based on the reference schematics: You can download Eagle files (both schematics…
Today we start building the chassis kit from Banggood that will become the robotic platform we’ll play with in the next posts… But first, remove the protective paper from all the acrylic parts: Let’s mount the motor on the chassis. You need the motor, two screws with their nuts, two mounting plates and the plastic wheel for the encoder. Insert the wheel…