Recent Changes in IoT_Course_English Web retrieved at 11:43 (GMT)
The st7789 lvgl display driver The display driver for the t watch is extremely simple. It provides a frame buffer for lvgl to draw into and it has a flush method to...
The T Watch 2020 hardware devices The LilyGo t watch 2020 is a smart watch, based on the ESP32, which you must program yourself. If you want a fully functional smart...
The ttgo module The ttgo module is again a pure MicroPython module used to initialize the t watch hardware. It contains two classes: Watch Motor and...
The AXP202 Power System Management driver The axp202 driver is a pure MicroPython driver written by Lewis He found on github: https://github.com/lewisxhe/AXP202 PythonLibrary...
The driver for BMA423 Triaxial Acceleration Sensor The MicroPython layer in bma423 from was not working because it uses deprecated calls to I2C in MicroPython. However...
The T Watch 2020 sound system The t watch has an integrated loudspeaker which is driven by a PCM Input Class A Audio Power Amplifier. This system allows us to play...
The Driver for the PCF8563 Real time Clock and Calendar This is a pure MicroPython driver written by Lewis He, which can be found on https://github.com/lewisxhe...
The Buzzer and Vibration Motor This device is simply connected to GPIO 4 and starts buzzing and vibrating when the bit is set to logic one. The demo program buzzer...
Solutions to exercise 17: I2S and sound Article text. Comments
Seven Segment Display and Keypad The Seven Segment Display and its TM1637 controller There is a nice and simple seven segment display controlled by a TM1637 controller...
Solutions to exercise 13: Seven Segment display and Keypad The Seven Segment Display and the TM1637 controller chip Exercise 1: The driver and its test program Writing...
The lvgl graphics library and its MicroPython language binding Article text. Comments
TFT Displays Introduction A wide range of displays is available for use with the Arduino system. For the WeMos D1 mini system I found 3 display boards. Each of them...
Using a second Serial Port On the ESP32 UART0 is normally reserved for interactive use with REPL. Sometimes we need a UART to communicate with external devices. Typical...
Compiling Micropython Forcing the correct module versions When trying to compile the ESP32 port of MicroPython on an Ubuntu 20.04 system, I see the following error...
Internet access Once we have collected data from the sensors, we want to get access to them. This can be accomplished most easily by transferring the data over the...
Writing Scripts A file system layout It is not always easy to keep tidy a file system and many students don`t really understand why this is necessary. During your...
Introduction The Internet of Things The Internet of Things or IoT for short is one of the major subjects in computer science these days. Micro controllers with Internet...
MQTT and Cayenne Introduction Cayenne claims to be the world`s first drag and drop IoT builder. It provides a dash board on which the user can set up predefined widgets...
MQTT and Cayenne Exercise 1: Install mosquitto on your machine. On Ubuntu Linux this can very easily be accomplished with apt. Try the mosquitto communication:...
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