Electronics

 

Current Research

Things I'm Learning

• STM32F103C8T6 ARM STM32 Minimum System Development Board
  • Easy & Powerful Arduino Alternative? STM32 Beginner's Guide
  • My notes so far...
• MAXAUTHDEMO1# Kit

Official Blog of Silicon Labs

• Choosing Electronic Parts for Your Project
  • Part 1 - Part 2 - Part 3

• Make your own Printed Circuit Board (PCB)
  • Part 1 - Part 2
• Control an accelerometer over I2C
  • Part 1 - Part 2 - Part 3 - Part 4
• IoT Security
  • 3 Steps to Securing the Internet of Things
  • Part 1 - Part 2 - Part 3 - Part 4 - Part 5 - Part 6 - Part 7

Resources

Resistance: 4 Band Colour Code Calculator

Capacitance: Conversion Calculator

Coil Inductance Calculator

How to Read a Capacitor

Symbols

Lessons in Electric Circuits

How to Test a Zener Diode

Local Resources (as in... "Can I get parts without waiting for shipping?")

• Electrical & Electronic Supply Inc.
  • Some stock of new parts
  • Lots of stock of used/surplus parts
  • Whole place is a hell of a mess...
• Forest City Surplus
  • Some, very limited, supplies
• Hardcore Electronic Supply
  • Very minimal stock so far...

 

Software

Electronics Design on Linux

gplEDA.org

Fritzing

DipTrace - Schematic and PCB Design Software

Oregano

EasyEDA

Tools

• Details about ST-Link V2 Programming Unit mini STM8 STM32 Emulator Downloader M89 Top
• Details about USBasp USB ISP Programmer Adapter for ATMEL AVR S51 WIN7 VISTA AT89S51 AT89S52
• Authentic Nitecore UM20 Dual Slot Li-ion Battery Charger
• USB Voltage Current Meter Charger Doctor Tester 200mV 0-60 Degree
• AVR Parts Tester
• DSO138
• Soldering Equipment

Microcontrollers

Knowledge

• Walking the 32bit path to a blinky LED
• MicroFAT: A File System for Microcontrollers
• Microcontroller Register Manipulation
• I²C
  • I²C - Learn
  • I²C Tutorial
  • I²C with Arduino
    • Wire Library
      • Master Reader/Slave Sender
      • Master Writer/Slave Receiver
  • I²C with ESP8266
    • I²C Examples? forum thread
  • I²C Projects
    • I²C Relay Board
• SPI
  • A Brief Introduction to the Serial Peripheral Interface (Arduino)
• Musings on writing a software USB stack

Tools

• FT232RL FTDI USB To TTL Serial Converter Adapter Module For Arduino

 

Software (IDEs)

• PlatformIO
• Arduino
  • Arduino Eclipse
• Energia
• Wiring
• MPLAB
• Simplicity Studio
• Mongoose OS
  • Installer (locally running)
• TrueSTUDIO for STM32

TI

• MSP430
• Stellaris
• C2000

Atmel

• ATmega
  • Arduino
• ATTiny

Renesas

• RX62N
• RL78

GNU Tools

Espressif

• ESP8266

STMicroelectronics

• STM8
• STM32

Microchip

• PIC

-STS-

• Flashing LEDs - Z80 Style

Single Board Computers

• Comparison of 81 open-spec, hacker friendly SBCs -- June, 2016

• C.H.I.P.

• Raspberry PI
  • Raspberry Pi Home Automation - Control lights, computers, CCTV and more!
• BeagleBone
• Odroid

Sonoff

• EWeLink
• Search: alternative control for sonoff
• SuperHouseTV #17: Home automation control with Sonoff, Arduino, OpenHAB, and MQTT
• SuperHouseTV #21: Six Sonoff Secrets: Storage, Safety, Switches, Sensors, Software, and Sites
• Esptool - arendst/Sonoff-Tasmota Wiki
• Flashing TASMOTA Firmware on the Sonoff Basic using Arduino (Guy seems a little dumb... but...)
• Flashing TASMOTA on a Sonoff OVER-the-AIR !!! (Same guy again...)
• #125 MQTT meets SONOFF: QoS, Last Will, Keep-Alive, etc. explained and shown

Things I've learned

• Apparently, quality control could be better...
  • If you find you're getting silly errors that have you chasing your tail, try reflowing the whole damn board...

Tasmota

• How to setup and configure Arduino IDE for Tasmota compilation and upload.
• Initial Configuration
• Button usage
• Commands
• MQTT Features

Next Steps

• Figure out why Tasmota & Mosquitto are arguing...

  • 1520040347: New client connected from 192.168.0.62 as DVES_72995D (c1, k15, u'tinker').

  • 1520040369: New connection from 192.168.0.62 on port 1883.

  • 1520040369: Client DVES_72995D already connected, closing old connection.

  • 1520040369: Client DVES_72995D disconnected.

  • 1520040369: New client connected from 192.168.0.62 as DVES_72995D (c1, k15, u'tinker').

  • 1520040382: Socket error on client DVES_72995D, disconnecting.

  • 1520040383: New connection from 192.168.0.62 on port 1883.

  • 1520040383: New client connected from 192.168.0.62 as DVES_72995D (c1, k15, u'tinker').

  • 1520040421: Client DVES_72995D has exceeded timeout, disconnecting

  • 1520040421: Socket error on client DVES_72995D, disconnecting.

• Hook the Tasmota Sonoff into Node-Red
• Figure out the whole "OTA" part...   :P
• Get Google Home talking to Tasmota

High Voltage

• 50,000V High Voltage Power Supply
• Tesla Coil Projects
• ZVS Drivers
  • How to make an Arc Lighter
  • How to make Induction Heating

Robotics

• Make A Simple Bipedal Humanoid Robot (Servo Walking Robot)

Off-Grid

• A New & Improved Charge Controller Based on the 555 Chip
• A low-voltage disconnect for 12 volt lead acid and lithium batteries
• ARDUINO MPPT SOLAR CHARGE CONTROLLER (Version-3.0)
• DIY solar cell from scratch

Knowledge

• Current Limiting Resistor Calculator for Leds
• Wire Guage
• Kelvin (4-wire) Resistance Measurement
• James Lewis - They're JUST Capacitors
• How to : Control Speed of Motor
• Some discussion about switching with MOSFETs & a bit about using LTSpice
• How to Build Your Own Discrete 4-Bit ALU
• Build Your Own Motor Driver
• Inspecting Electronic Circuits with an Audible Circuit Probe
• The Basics Behind Constant-Current LED Drive Circuitry
• How Lithium-Metal Doubles the Energy Density of Rechargeable Batteries
• Intro to Stepper Motors
• Uses of Different Soldering Iron Tips
• From Resistors to ICs Color Codes
• Measuring Resistances Less Than 1 Ohm

Digital Logic

Truth Tables

AND				NAND
0	0	0		0	0	1
0	1	0		0	1	1
1	0	0		1	0	1
1	1	1		1	1	0
OR				NOR
0	0	0		0	0	1
0	1	1		0	1	0
1	0	1		1	0	0
1	1	1		1	1	0
XOR				XNOR
0	0	0		0	0	1
0	1	1		0	1	0
1	0	1		1	0	0
1	1	0		1	1	1

Ideas

---

• Quick and Efficiently Wiring Your Prototype Circuit Board
• Using Transistor as a Switch
• 4-in-1 Arduino LCD Shield Kit
• 9V/1kV DC/DC converter
• A low-voltage disconnect for 12 volt lead acid and lithium batteries

YouTube

• #237: 4 Wire Resistance Measurement | Kelvin connection
• 4 wire kelvin resistance measurement tutorial
• Soldering Tool
• Wireless Module on Breadboard - NRF24L01+ and ESP8266
• Level Shifting Tutorial 5V-3.3V Quick and Dirty Methods
• How to Drive LEDs - Easy Constant Current Circuit
• How to protect circuits from reversed voltage polarity!
• 6 Ways to control Motors! Including with Arduino & Raspberry Pi! How To Tutorial from NYC CNC
• Salvaging Hall Effect Sensors and Neodymium Magnets - Build an RPM-meter

---

Reverse Engineered: 50p Electronic 555 Doorbell Kit (with schematic)

• 

  Schematic generated in Fritzing

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Instructables

Simple Servo Tester

• 

  Caption1

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• Electronics Components Storage

• Is the best PCB etchant in every kitchen?
• Automatic Dark Detector
• How to Control a Nixie Tube with an Arduino
• Basic Electronic components
• Call Blocker / Telemarketer Stopper
• Simple Led driver/Constant-current source 20 mA

Interesting Products

Nitinol (Muscle Wire)

-STS-

• Embedded PID Temperature Control

1. The Circuit
2. Board-Level Integration
3. Implementation and Visualization
4. The Scilab GUI

• Halogen Lamp Abused for Desoldering
• (Homebrew PCBs with Clive)
  • Prototype build of LED ornament with dry film photoresist.
  • Dodgy mains emergency light. Full build and schematic.
  • Inside a UV nail-gel curing light with unusual LEDs.

Finding data on old chips

• CPU-World
• Silicon-Ark

• A high current power supply built around a server voltage regulator
• Direct PCB Printing with a Modified Laser Printer
• DIY Through Hole Plating of PCBs

LMT01 temperature sensor

• LMT01 - My Favorite Accurate Temperature Sensor - Full Tutorial Arduino and ESP8266

• ESP8266 voltage regulator (LiPo and Li-ion batteries)
• Coin Cell Jump Starter Project

Home Automation

• SuperHouse
  • #24: Home automation system architecture
• See Sonoff

Some How-Tos

• DIY Arduino Schematic - AddOhms #23
• How to Make Double Sided Circuit Boards at Home (Mr Carlson's Lab