stuff harvesting - gather your electronic components for hobbyist

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Stuff Harvesting João Alves ([email protected] ) Version 1.0 - Mar 2014

Author: joao-alves

Post on 26-Aug-2014



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Tips on buying cheap electronic components over the Internet.


  • Stuff Harvesting Joo Alves ([email protected]) Version 1.0 - Mar 2014
  • Agenda Stuff to Buy Components Tools Stores Recommendations
  • Stuff to Buy - Components Resistors LEDs Protoboards Capacitors Electrolytic Ceramic Headers Switchs Variable Resistors Diodes Photoresistors IC Chips 7805 Voltage Regulator 74HC595 Shift Register IC Sockets
  • Components - Resistors Different sizes and shapes and values. They have three parameters, the resistance in Ohms, tolerance percent and power rating in Watts Most common used are 1% 1/4W Metal Film with 220, 330, 470, 1K and 10K. Buy in 100PCs packs or Buy 30 Values Kinds
  • Components - Switches SPST They come in different sizes and shapes. SPST stands for Single pole, single throw These are momentary switches They can be 2-pin or 4-pin Buy in 100PCs packs
  • Components - LEDs They come in different sizes and shapes. Most common used are 3mm or 5mm single color diffused or waterclear. There are at least Red, Green, Yellow, Blue, White, Pink, Amber, UV. Buy in 100PCs packs or Buy Assorted pack to get multiple colors
  • Components - LEDs multicolor They come in different sizes and shapes. Most common used are 5mm or 8mm common anode or common cathode. There are RGB-CA, RGB-CC, dual color 3- Pin and 2-Pin 7 color autochange. Buy in 100PCs or 20PCs packs
  • Components - Headers There are two types Male and Female. They can have 1 or more rows. They can be Straight or right angled They have the 2,54mm space between pins They usually are 11mm long, male header also come with 19mm lengths. They typically come in a 40-Pin long format Buy in 10PCs or 14PCs packs
  • Components - Protoboards There have different sizes and types There are single and double sided The Grid is about 0.1inch (2.54mm) Typical thickness is about 1.6mm The Hole diameter is Approx.1.0mm The common sizes are 4x6cm, 2x8cm, 5x7cm 3x7cm The double sided Fibre Glass are usually better Prefer Fibre Glass over Prototype paper PCB Buy in 10PCs or 20PCs packs
  • Components - Electrolytic Cap. There are measured in Farads and Volts These capacitors have polarity Normally used to store energy They have typically values of 10, 15, 22, 33, 47, 68 multiples of nF They come with 10V, 16V, 25V, 35V and up to 450V For experiments you do not need to go up to 25V Buy in 10PCs x 12 Kinds Ref:
  • Components - Ceramic Cap. There are measured in Farads These capacitors dont have polarity Normally used for decoupling, smoothing and filtering They have a variety of values Buy in 20PCs x 50 Values to get a good variety
  • Components - Rectifier Diode it is used for reverse voltage protection These Diodes have polarity The 1N400x Series works up to 1A the 1N540x Series works up to 3A They support voltage ranges from 50V to 1000V It drops the voltage by 0.7 v per diode Buy in 10PCs x 8 Values to get a good variety
  • Components - Variable Resistors Its a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. The code is the representation of the maximum resistance - First 2 digits x 10third digit They have a variety of values (100, 101, 102, 103, 104, 105, 200, 201, 202, 203, 204, 205, 253, 254, 500, 501, 502, 503, 504, 505) Buy in 5PCs x 11 Values to get a good variety
  • Components - Photoresistors Also caller LDR - Light Dependant Resistor Varies the resistance according to light LDR commonly has a high resistance in the dark, and a low resistance in the light. They have a variety of values that specify the dark and light resistance interval. Buy in 10PCs or 20PCs, usually the code found is GL55xx
  • Components - IC Chips These type of components reduce the complexity of circuits This is only two examples of interesting IC Chips: 7805 - Linear Voltage Regulator to 5V 74HC595 - Allow 8 bit digital output using just 3 input Pins Buy in 10PCs or 20PCs
  • Components - IC Sockets These type of components allow to add and remove Chips without soldering. They exist in the same formats as the Chips. Tipically 6,8,14,16,18,20,24,28,40 Pin Sockets Buy in 10PCs of each. The most common used are the 16 Pin Sockets.
  • Stuff to Buy - Tools Soldering Iron Track Cutter Wire Snips X-Acto Knife Solder Multimeter Desoldering Pump Breadboard Breadboard jumper wire
  • Stores Online: Ebay ( Tayda Electronics (https://www.taydaelectronics. com/) Leds & Chips ( Physical Stores: Servelec ( AKI (
  • Stores - Recommendations - Ebay Buy only from sellers with more than 99% positive feedback and at least 5000 feedback score Buy only new products Verify the postage costs (lots of them with free shipping) Search for similar products and auctions for best prices Be patient (cheap comes with a cost - takes time to arrive) Recommended sellers: e_goto, chip_partner, chipworld, gc_supermarket, polida2008, tayda2009, alice1101983, czb6721960
  • Stores - Recommendations - Tayda Watch FB page for Discount Coupon Code
  • Q & A ? Questions ?