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

• 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

Ohms Law Calculator (& some other calculators...)

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...

PCB Manufacturers

JLCPCB

PCBWay

Dirty PCBs

OSHPark

 

Software

Electronics Design on Linux
gplEDA.org

DipTrace - Schematic and PCB Design Software

Oregano

EasyEDA

Fritzing

• Fritzing parts sets by OmniGatherum

KiCad

• Introduction and KiCad Project Creation - "Getting To Blinky" KiCad Tutorial
• Downloading for Mint

Some Resources

Eagle

• Download Eagle

Tools

• O! M! G! Need an assembly turntable
• 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
• FT232RL FTDI USB To TTL Serial Converter Adapter Module For Arduino
• Authentic Nitecore UM20 Dual Slot Li-ion Battery Charger
• USB Voltage Current Meter Charger Doctor Tester 200mV 0-60 Degree
• DSO138
• Soldering Equipment
• Easing the pain of SWD on modern DPS:es

Homebrew

• AVR Parts Tester
• ESP32 and the CWTD ‘Test gadget’
• DC voltmeter test gadget
• Search: "Arduino based test equipment"

Microcontrollers

-STS-

• Flashing LEDs - Z80 Style

FPGA

Lattice

iCE40 Ultra Plus

Gnarly Grey UPDuino

• GitHub
• Tutorial

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

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

How-To

Tips

• Using 0603 Surface Mount Components for Prototyping

Basic Circuits

• MOSFET as a Switch
• How to Build an N-Channel MOSFET Switch Circuit
• Using MOSFETS with TTL levels (5 Volt and 3.3 Volt)

PCB

• Cheap and Easy PCB Etching (ItKindaWorks video)
• Build Your Own PCB Chemical Tank
• Make your own Printed Circuit Board (Official Blog of Silicon Labs)
  • Part 1 - Part 2
• How to Make PCB using Marker
• Dry Film
  • 30cm Photosensitive Dry Film Replace Thermal Transfer PCB Board
    • BigClive
      • Gillian's Diamonds LED crystal remix. Full build.
      • Photoetching PCBs with silkscreen inkjet transparency material.
      • Prototype build of LED ornament with dry film photoresist.
      • Applying and exposing dry film photoresist and building a PCB.
• Thermal Transfer
  • 10pcs A4 Sheets Heat Thermal Transfer Paper Toner For DIY Electronic Prototype Mak PCB Circuit Board
• Chinese PCB production
  • From Idea to Schematic to PCB - How to do it easily!

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
• w2aew #289: Back to Basics: Zener Diodes - How to Use | Applications | not all created equal
• Current Transformer Basics

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
• #114 No contact mains detector for Arduino & Pi (just 10 components)

---

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

• 

  Schematic generated in Fritzing

---

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
• Applying and exposing dry film photoresist and building a PCB.
• 18650 Battery charger reverse polarity protection (Vince's thoughts blog)
• Lipo Charge/Boost/Protect board in 18650 cell holder format

Circuit information & Ideas

• SEARCH: 5v relay module circuit diagram active low
• SEARCH: active low transistor switch
• Preferred way of interfacing relay coil with active low output from MCU
• ECE 201L Circuit Analysis Laboratory - Lab 10  (digital logic input/output)
• The Engineering Projects (some useful information)
• Relay Switch Circuit

ETC

• Paper As a Substrate for Circuits
• Tinkermans blog
  • various electronics projects
  • He's into IoT...

GitHub Links

• My own
• Bald Engineer
• Jon Oxer
  • SuperHouse
  • FreeTronics
• Ralph Bacon