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 220Ω, 330Ω, 470Ω, 1KΩ and 10KΩ.
● 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: http://www.rfcafe.com/references/electrical/capacitor-values.htm
Components - Ceramic Cap. ● There are measured in Farads● These capacitors don’t 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 (http://www.ebay.com/)○ Tayda Electronics (https://www.taydaelectronics.
com/)○ Leds & Chips (http://ledsandchips.com/)
● Physical Stores:○ Servelec (http://www.servelec.pt/)○ AKI (http://www.aki.pt/)
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 ?
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