Tag Archives: MCU

ARM:0009 STM32CubeMX tool from STM MCUs

Posted on May 27, 2020 by Administrator

There will be several posts about using the cheapest MCU board from China. So called Bluepill- PCB containing STM32F103C8T6 microcontroller, USB connector and some small elements. For a few bucks/euros we have upto 72MHz CPU, 64Kb of ROM and up … Continue reading →

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AVR USB printer device and teletype

Posted on July 11, 2019 by Administrator

I have old teletype printer T-63 (it is made by RTF in Eastern Germany, clone of old Siemens Teletype). And the idea is about connecting it as USB printer to our-days computer. Easiest way is to connect it using RS232 … Continue reading →

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RGB matrix: organization

Posted on July 11, 2015 by Administrator

This post is about structure and organization of big RGB LED matrix. Just notes to remember how it works, as paper notes tends to be lost. And it is much easier to find information back in the internet compared to … Continue reading →

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ATMEGA USB 12

Posted on December 7, 2007 by Administrator

Next toys connected to my AVR-USB testing board are two Freescale semiconductors (ex Motorola) accelerometer chips: MMA3202D and MMA7260QT. First is “catastrophic” accelerometer chip with high-G (100g X-axis and 50g Y-axis) sensor. If you apply such acceleration to human body … Continue reading →

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ATMEGA USB 11

Posted on November 24, 2007 by Administrator

There are lots of “rainbow LED” projects in the internet. So, I decided to place something similar in my weblog. There are 4 hardware PWM outputs in ATMEGA16. So do not need to build fancy software routines to make pulse … Continue reading →

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ATMEGA USB 009

Posted on November 20, 2007 by Administrator

Blog entry 008 is not working… so here is 009 I installed electronic lock with Dallas (Maxim) i-Button chips. It was very simple, low security version of electronic lock as it uses DS1990A chips as the keys. Original lock was … Continue reading →

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ATMEGA USB 006

Posted on October 20, 2007 by Administrator

It is time to use USB. After several unsuccessful experiments I found some working project in the internet. Maybe other project are working too, but only this one was usable and understandable for me. As I need not only binary … Continue reading →

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ATMEGA USB 005

Posted on October 15, 2007 by Administrator

There are lots of chips with serial control. Some of them use Philips I2C buss. There two data lines and two power lines to transmit all data. There DTMF encoders, switches, Dolby surround audio processors, multiplexers and many many other … Continue reading →

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ATMEGA USB 004

Posted on October 14, 2007 by Administrator

There is ADC in ATMEGA16 with 8 multiplexed inputs. This analog to digital converter have several interesting options. Here is abstract from datasheet: • 10-bit Resolution • 0.5 LSB Integral Non-linearity • ±2 LSB Absolute Accuracy • 13 – 260 … Continue reading →

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ATMEGA USB 003

Posted on October 4, 2007 by Administrator

Blinking LED is not very cool. And not very informative. But we can use LCD module. It is very cheap and available device. There are many types of LCD modules in the world. I am using most popular- HD44780 controller … Continue reading →

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