FreeRTOS tutorial
Extensive web0based RTOS tutorial.
dev  electronics 
4 weeks ago
LED 7-segment display 4 digit
Using 74HC595-based boards with Arduino because the documentation on Aliexpress is not available or clear.

https://github.com/kostarev/TM74HC595-4dig-display
arduino  electronics 
9 weeks ago
Encoders software debugging
This time, it's simply about these small and cheap rotary encoder knobs which one uses often as input controls, replacing analog potentiometers or whatever. Basically, these are quadrature encoders like others, but when using these as user control inputs, for example for a midi device, you don't need a huge numeric range to count millions of turns at 0.1° angle resolution.

The problem with these mechanical switches is that these bounce. That means that instead of simply closing a contact
dev  teensy  electronics 
10 weeks ago
How to Germinate and Grow Milkweed Seed - American Meadows Blog
Instructions for preparing and planting Common Milkweed (Asclepias syriaca), Swamp Milkweed (Asclepias incarnata), and Whorled Milkweed (Asclepias verticillata) seeds. We have found these techniques best for good growing results. Milkweed...
garden 
11 weeks ago
Teensy 3.1 with ESP8266 Web Server
I like to experiment with various RF devices. I have tried the Arduino Yun, CC3000 breakout board and the ESP8266 model ESP-01. I have a general task that I like to use to find out difficult a device is to use. The task is a web server that allows a browser(hopefully any) to turn on or off a LED connected to the device. The current flowing through the LED is measured and reported. The ESP-01 is the version of the ESP8266 that uses"AT" commands to setup and use a WIFI network connection.
wireless  wifi  teensy  electronics 
11 weeks ago
ESP8266 Wifi Module - prints “ready” but not responding to AT commands
Dealing with termination characters when using AT command interface on the ESP8266
wireless  wifi  electronics 
11 weeks ago
A Guide To Using ESP8266 With TEENSY 3
Work in Progress
The ESP8266 is a very low cost Wi-Fi connectivity solution.
It consists of a 802.11 b/g radio and 32 bit microcontroller.
While one can program the ESP8266 MCU directly, I'm not ready to learn yet another programming environment.
For me the Teensy 3 is ideal for a host controller and since it is a 3.3 volt device, it is directly compatible.
I am hoping to pull the information together in one place to save others the frustration I had getting started.

These images show
wireless  wifi  teensy  tutorial  electronics 
11 weeks ago
Organizing with Devonthink | Skulking in Holes and Corners
Yet more Devonthink. The advantages of Devonthink Pro Office for me compared to my old Access database are straightforward: DTPO collects all my research documents in one place, making it easy to view them all together. This includes PDFs (both image and OCRed), jpgs, Word docs, rich text docs, Excel files, web pages (you can…
devonthink  organization 
11 weeks ago
CSS: figures & captions
Manipulating figure and figcaption appearance via css. This is useful for DEVONthink markdown to HTML because that's what is used in their translation process.
css  dev  web  html 
12 weeks ago
CH340 CH341 serial adapters on macOS 10.12 Sierra kernel panic
Winchiphead signed drivers for CH340-CH341, OS X 10.9 to macOS 10.12
arduino  electronics 
12 weeks ago
String usage in IAR C/C++ Compiler for AVR
String usage in AVR. Discussion of issues related.
avr  dev  c  electronics 
12 weeks ago
ATtiny i2c Slave – The Wandering Engineer
I'm working on a project where I need several sensors that communicate back to a central processor.  Since I'll have several of these sensors I need them to be cheap and the ATtiny85 jumped to mind.  The only problem is that I've never used i2c with the ATtiny series before.  I read dozens of "tutorials"…
arduino  attiny  electronics  i2c 
12 weeks ago
Resistor Networks (SIPS & DIPS)
Surplus sales of Nebraska. Lots of miscellaneous parts.
march 2018
KiCadHowTo.wikidot.com - KiCadHowTo
Guide and tutorials for KiCad, the free, open source, PCB CAD package for Windows, Linux and Mac. How to get started. How to do more.
tutorial  kicad  electronics 
march 2018
Comparison of ESP8266 NodeMCU development boards • my2cents
This comparison of ESP8266 NodeMCU development boards also includes a comparison of ESP8266 chips used on those boards. The names can be confusing.
electronics  wifi 
march 2018
Teensy 3.1 without arduino IDE
Using teensy without Arduino IDE
teensy  dev  c  electronics 
march 2018
How to Access Back-side Teensy Pins?
Ways of accessing the backside pins on Teensy 3.x
teensy  electronics 
march 2018
Teensy 3.2 Breakout (Revision D) from Tall Dog on Tindie
Teensy 3.2 Breakout (Revision D) from Tall Dog on Tindie
electronics 
march 2018
Using MCP23008 8-bit I2C IO Expander on the Raspberry Pi | SK Pang Electronics Ltd
This project is to use the MCP23008 8-bit IO Expander with I2c interface on the Raspberry Pi. The software is written in C. Using the Starter Kit-C ...
dev  raspberrypi  electronics  c  i2c 
march 2018
AVR SELF LEARNING KIT–Interfacing 16 x 2 LCD in 8 bit Mode | alselectro
  In this tutorial we shall explore how to connect 16 X 2 LCD with ATMEGA 16 on Development board. By 2 ways we can connect , first one is 8 bit mode & the second is 4 bit mode   This post is on 8 BIT MODE In 8 bit mode all port pins…
lcd  avr  electronics 
march 2018
Lumber Dimensions
Lumber Dimensions - The actual sizes of common lumber sizes.
reference 
march 2018
arduino-info - Nrf24L01-2.4GHz-HowTo
Nice tutorial/summary on the nRF24L01 module
arduino  electronics  wireless 
march 2018
Arduino & Raspberry Pi talking wirelessly [Part 2]
This is the second part of my last post. In case you haven't read it yet, I suggest you do it before reading this one. If you aren't interested in the Arduin...
arduino  wireless  raspberrypi  electronics 
march 2018
Raspberry Pi And The IoT In C - I2C Bus
Working with the Si7021 on raspberry pi in C
raspberrypi  electronics  c  i2c 
march 2018
RF24/Makefile at master · fergul/RF24 · GitHub
This is the Makefile for the rf24 library which gives some clues as to how to create a library for some of our devices.
raspberrypi  c  electronics  dev 
march 2018
How to set up an electronics lab/workshop at home
How to set up an electronics workshop. Has a good supplies list.
electronics 
march 2018
Where Canadians can buy Electronics parts
Electronics component suppliers in/for Canada
commercial  electronics 
march 2018
TTL Cookbook (pdf)
A pdf of the venerable TTL cookbook
electronics 
march 2018
Proto Advantage - Breadboards (65)
Canadian source of breadboards, SMD adapters, etc.
electronics  commercial 
march 2018
How to Write and Run a C Program on the Raspberry Pi
Find out what C programs are and how they're used. We'll also do a "hello world" example so you can compile and run your own C programs on the Raspberry Pi.
dev  electronics  rpi  c 
march 2018
Low Level Programming of the Raspberry Pi in C | Pieter-Jan.com
Excellent, very complete tutorial on low level programming in C on the Raspberry Pi. (Content clipped to DT on 2018-03-04)
rpi  dev  c  electronics 
march 2018
Using the bcm2835 C library for SPI – Raspberry Alpha Omega
Using the bcm2835 C library for accessing the SPI bus on Raspberry Pi. Example for MCP300x. Note that their example is for MCP3002, not MCP3008
raspberrypi  c  dev  electronics 
march 2018
bcm2835: SPI access
Using the bcm2835 library with C to access the SPI bus on Raspberry Pi
electronics  raspberrypi  dev  c 
march 2018
Raspberry Pi And The IoT In C - AtoD With The SPI Bus
Interfacing the Raspberry Pi to MCP3008 ADC using C and the bcm2835 library
electronics  c  dev  raspberrypi 
march 2018
MacOS | KiCad EDA
KiCad is an open source EDA software for Windows, OSX and Linux. Create PCB circuits for free with the most advanced features.
electronics 
march 2018
628128 Datasheet
628128, 628128 Datasheet, 628128 128Kx8 CMOS RAM Datasheet, buy 628128 RAM
electronics  commercial 
march 2018
Grant's Z80 computer
Minimal chip-count Z80 computer
dev  electronics 
march 2018
Arduino Wireless Communication - NRF24L01 Tutorial - HowToMechatronics
In this Arduino tutorial we will learn how to make a wireless communication between two Arduino boards using the NRF24L01 transceiver module.
arduino  electronics 
february 2018
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