Simple and common

 2
Available
Electronique

ULN2803A (DIP18 8-channels Darlington...

Texas Instruments
ELCULN2803A
1,25 €
Easy to use Darlington Transistor Array for all your projects with diode protection and 8 channels.
Available
Electronique

LM358N (PDIP8 Op-Amp)

ELCLM358N
0,50 €
Simple and powerful op-amp for your projects.
 2
Available
Electronique

CD4021BE 8bit Shift Register (parallel to serial)

Texas Instruments
ELCD4021B
1,20 €
CD4021 is a cascadable 8bit parallel to serial shift register (basically the inverse of the 74hc595). Sometimes you'll end up needing more digital input than the pins on your microcontroller board can readily handle. Using a parallel to serial shift register allows you collect information from 8 or more switches while only using 3 of the pins on your...
 2
Available
Electronique

74HC595 Shift-Register (DIP)

Texas Instruments
ELC74HC595
1,20 €
The very popular 595 shift register chip of the 74 series is used a lot by hobbyis because of its wide availability, good speed and simplicity. Just plug it on an arduino like shown in the tutorials and youi have 8 more outputs, put two and you have 16 more outputs ! (up to a lot of them actually, with only three pins !)
 2
Available
Electronique

Optocoupleur Traversant PC817 Phototransistor

ECJTAOPC817
0,40 €
PC817/EL817  4pin  DIP  General Purpose Photocoupler. This Opto-coupler consist of one piece of Ga as emitter and one piece of NPN transistor.
 2
Available
Electronique

74HC595 Shift-Register ( SMD CMS )

Texas Instruments
ELC74HC595CMS
0,67 €
The very popular 595 shift register chip of the 74 series is used a lot by hobbyis because of its wide availability, good speed and simplicity. Just plug it on an arduino like shown in the tutorials and youi have 8 more outputs, put two and you have 16 more outputs ! (up to a lot of them actually, with only three pins !)
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