We´d like to share with you its parameters, as well as hints, which can make your work with this module easier – this is our biggest bonus to sale of modules from company Quectel. Are you interested in compatibility with previous modules? Module EC20 arises from the M10 GPRS module and the UC20 UMTS module. […]
When we need precision and repeatability, a stepper motor is always the solution. With the way it is designed, a stepper can only move from one step to the next and fix in that position. A typical motor has 200 steps per revolution; if we tell the motor to go 100 steps in one direction,
Arduino Stepper Motors Continue Reading
Do you (still) remember the display of your old CD player, HiFi system or car radio? Have you ever noticed the displays used at your local supermarket that shows you the scanned item and the price of it? These displays have a characteristic beautiful bright blue-green colored glow in common: These are so called vacuum
Arduino VFD Display Clock Tutorial – A Guide To VFD Displays Continue Reading
Nowadays, when “almost everything” works on electricity we can see still more devices connected to mains line. That´s why it often happens, that many small-power devices are connected to one (circuit breaker fused) line. To increase a safety, it´s usually advantageous to fuse particular devices separately – for example by small glass fuses. Somewhere it´s
Add a fuse where it´s desirable Continue Reading
A device with excellent specification, quality components used, …., but a one step is still missing to reach a great overall impression – it is to use a quality and aesthetic control components. Probably you´ll agree, that knobs for potentiometers and encoders belong to a “group of critical components”, determining a resulting look of a
Cliff knobs – a pleasure to touch Continue Reading
Have you been using float or double variables to perform mathematical operations on embedded systems without a Floating-Point Unit (FPU)? You are doing it wrong! That’s incredibly inefficient. Use fixed-point representation instead. An FPU is an hardware block specially designed to carry on arithmetic operations on floating point numbers. Even though the C/C++ code may work without an
The Art of Representing Floating-Point Numbers as Integers Continue Reading
At the fpv-community.de Forum I read about a DIY Weller station designed by Martin Kumm. Basically an Arduino shield to drive a Weller soldering tip. As there is not much to it, the board simply contains an precision OpAmp, a power MOSFET, 2 buttons for adjusting the temperature and a display to show the current
Soldering Station Continue Reading
In May 2013, I learned about Ward Cunningham’s Txtzyme language – a very simple serial command interpreter which allowed basic control of microcontroller function using a serial interface. I wrote about it here: Txtzyme – A minimal interpretive language and thoughts on simple extensions Tytzyme was about as easy as a “language” could get, it
SIMPL Revisited – Again, but this time it’s personal Continue Reading
Update: 19th May 2016 Rev 14 of this project revises libraries and code to work with ESP8266.com IDE plug-in V2.2 Update: 17th December 2105 Rev 11 of this project cleans up other attempted connections if it is already connected. Also uses the timeout set by the web config. Rev 10 ignored the timeout setting. Update:
A Cheaper ESP8266 WiFi Shield for Arduino and other micros Continue Reading
C055_1 This project is a 4-phase unipolar stepper motor controller. Description Unipolar 4-Phase Stepper Motor Controller Board will help you control a Stepper Motor or 4 individual Solenoids. This circuit consisting of transistors that serve as current amplifier and also diode to prevent damaging back EMF, circuit uses Darlington transistors to provide high current capacity
Unipolar 4-Phase Stepper Motor Controller Continue Reading
