Blynk based smart home – simple door alarm
In the past I have used Sonoff based door alarm sensor but for some reason the Sonoff App stopped to inform me in case the door was opened. So I started to look for a cost effective alternative and at... Read More
Emded ST-Link Utility – command line programming into Atollic TrueSTUDIO
Since the GUI version of ST-LINK Utility made me some headaches like not automatic reload of the binary file after the file was changed, I was looking for an other more efficient way to flash the STM3... Read More
Twisting wires – easy way
If you are in position that you twist a lot of wires for your DIY electronic projects, you will love this tool. My wire twister can be easily attached to an electrical screwdriver or drill. The Result... Read More
3D printable case for a cheap USB DC-DC Step-down Converter Module LM2596
I’ve got this amazing and cheep USB charging module based on LM2596 converter. The module is available on ebay for around 1.5$. My idea was to install this on my bed, so no other family members ... Read More
Raspberry Pi – Arduino like IO access
Hi guys, I’ve wrote some functions to control Raspberry Pi IO’s via C code. The control approach is the same like in Arduino IDE: void pinMode (unsigned int pinNumber, unsigned int pinFunc... Read More
LwIP Stack – Bandwidth/Performance Testing with Iperf
Working on an embedded system using Ethernet interface, one day you may need to know about the performance of your system. They are plenty tools which are able to run a data transfer test, but the mos... Read More
125kHz RFID Manchester encoded Tag Reader based on Attiny45/85
Motivation Since one work mate in my previous company used his place in a car park just three days a week, I was able to use this the other two days without wasting the time for searching a parking po... Read More
Control your 433Mhz RF Sockets via Internet by ESP8266 and Blynk App
My former setup to control 433Mhz RF sockets over the internet was realized with a RaspberryPi (GPIO Control Software + HTTP Server) and one cheap FSA1000a 433Mhz Sender. Since I had one unused ESP826... Read More
AJAX microcontroller request – update the displayed data in background
If you use http server for displaying the data in your IOT projects using e.g.ESP8266 or Arduino with an Ethernet shield take a look on AJAX request. The main advantage of an AJAX request is:it runs i... Read More
STM32 CRC32 example – hardware and software calculation
you how the CRC32 calculation can be done on an STM32 device. The example is describing two ways of calculation. If you hardware allows it, you can do the crc32 calculation by peripheral hardware. The... Read More