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Design 1/4
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Usability 2/4
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Creativity 3/4
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Content 4/4

Arduino is a very nice prototyping platform but, Although not very expensive, costs at least € 20 (25 USD).

The CSEduino is the answer to a very low cost DIY Arduino like board.

This was a problem in 2014, now its not due to the chinese clones of Arduino boards.

With a very small budget of up to € 3.5 (5 USD) in parts it is possible to build this board with the required components.

To be small some optimizations were made to the stripboard to accomplish its reduced size. Version 1 and 2 of the board are 4.5cm x 5.5cm.

The circuit is adaptable to different requirements and it was made modular enough to be able remove the parts not needed and reduce its size even further.

To be simple and easy to build I’ve used only THT - Through-hole technology. Avoiding SMD - Surface Mount Devices - components - as they are harder to solder and prone to errors. I’ve used the most common microcontroller used in Arduino Boards with THT - the ATMega328P (in PDIP format).

Bill of materials used in this project

7805 linear voltage regulator
1
100 μF
2
25 V electrolytic capacitor
1
1N4001 rectifier diode
1
470Ω resistor
1
3mm LED
1
ATmega328P-PU microcontroller with Arduino bootloader
1
28 pin DIP IC Socket
1
16 MHz crystal oscillator
2
22 pF
1
50 V ceramic capacitors
1
SPST momentary normally-open type switch
1
10 kΩ resistor
1
100 nF
1
50 V ceramic capacitor
1
1 kΩ resistor (R1)
1
8-pin female single header
1
6-pin male single header
1
14-pin female single header
2
Mar 17,2020
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