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If you're into arcade gaming, there's no doubt that you've heard of Sanwa. Used widely in top end arcade arcade machines and manufactured in Japan by Sanwa Denshi Co., Sanwa arcade products are up there at the top of quality chain in arcade gaming. You really can feel the difference in the quality and snappiness of the microswitches!

The Sanwa OBSF-30 range are 30mm "snap-in" style arcade buttons with built in microswitch and 2.8mm terminals. These buttons feature two plastic clips which are designed to lock into panels with a thickness of up to 4mm. They will also clamp perfectly well into greater thickness materials.

Features

• Green Colour
• 30mm Diameter Arcade Button
• Sanwa High-Quality Microswitch
• Smooth Clicking Action
• 2.8mm Terminal Contacts
• Gold Plated Contacts
• Official Sanwa Product
• Manufacturer Part No. OBSF-30

• Red: 1.9V-2.1V
• Yellow: 1.9V-2.1V
• Blue:3.0V-3.2V
• Green: 3.0V-3.2V
• White:3.0V-3.2V

• Red:300
• Yellow: 300
• Blue:700-900
• Green: 400-500
• White:12000-14000

• Red: 630-635
• Yellow: 588-590
• Blue:460-465
• Green: 567-570
• White:Color temperature 8000

Diffused LEDs shine through a semi-transparent cover, absorbing the light and bouncing it through in different directions. Instead of seeing the individual LED light up, the whole bulb shines instead, giving a more uniform light spread over a greater area.

• 10 x Green LED 5mm

Python library

Introduction

• 8 channels bidirectional voltage translation between different logic level, translate between Ax and Bx automatically
• 4 pairs of power supply interfaces, supports more situations
• Use tantalum capacitors for power filter, provides more stability
• Voltage level: 1.8V-6V
• Dimension: 31.6mm x 25.4mm

In the case of translating between 3.3V and 5V system:

• VCCA/VA connects to 3.3V power supply
• VCCB/VB connects to 5V power supply
• GND connects to power negative pole respectively, the two power supply should be common-grounded with each other
• When Ax has TTL 3.3V input, Bx will get TTL 5V output
• When Bx has TTL 5V input, Ax will get TTL 3.3V output
• NO direction control required

Wiki : www.waveshare.com/wiki/Logic_Level_Converter

PLA 3D printer filament (Polylactic acid)  is a biodegradable and bioactive thermoplastic  aliphatic polyester derived from renewable resources.

Specification

Print temp :190 - 220 degrees 

Heated Bed :- 0 - 60 degrees 

Speed range : 50 - 80mm/s optimal

Printability : Easy

Net Weight: 1kg


What's in the box ?
1 x SA Filament PLA Pale Green  (1.75mm)

PLA 3D printer filament (Polylactic acid)  is a biodegradable and bioactive thermoplastic  aliphatic polyester derived from renewable resources.

Specification

Print temp :190 - 220 degrees 

Heated Bed :- 0 - 60 degrees 

Speed range : 50 - 80mm/s optimal

Printability : Easy

Net Weight: 1kg


What's in the box ?
1 x SA Filament PLA Black (1.75mm)

Description:

Awesome and fun, for adults and kids, this is a seasonal must if you're into your electronics and gadgets. This circuit is composed of 16 pcs LED (light emitting diode). The 16pcs LED divided into four groups, and each group has different flashing frequencies, when four groups flash together, this item looks like a small Christmas tree. The circuit is powered by a 9V battery.

Specifications:

This circuit is simple and practical, low power consumption. It uses integrated circuits for driving: fewer parts, and the line is simple and easy to understand.

External Wiring Kit:

With USB plug for easy replacement of parts at any time and conducive circuit debugging. Also allows us to deepen our understanding of the principles of the circuit in the debugging process.

 This project is in the form of an oscillation circuit by the cycle generated by the following principles:

• After the first charge, the capacitor C1 & C4 charging is complete.
• Capacitors C2 & C3 will continue to charge.
• When the transistor Q1 & Q4 is turned on at the same time, it discharges the capacitor C1 & C4.
• Capacitors C2 & C3 is fully charged, the transistor Q1 & Q4 will be closed, while also charging the capacitor C1 & C4 again.
• Transistors Q2 & Q3 is turned on while the capacitor C2 & C3 will be discharged.
• By analogy, the flash of speed is the oscillation frequency, and the frequency is determined by the resistor R & capacitance C values.

What's in the box ?

Acrylonitrile butadiene styrene, ABS.

A common plastic that’s found all around us, with the most well-known use being Lego bricks. Its properties, such as high strength and good temperature resistance, make it a good choice for many applications

Print temp :230 - 260 degrees 

Heated Bed :- 90 - 100 degrees 

Speed range : 30 - 60mm/s optimal

Printability : Moderate

Net Weight: 1kg

What's in the box ?

1 x SA Filament ABS Green (1.75mm)

PETG is short for polyethylene terephthalate glycol-modified

PETG is the perfect filament to combine strength and ductility, which is why it's used in so many mechanical parts and robotics. It has great chemical resistance with good water, acidic and alkalic resistance. PETG in its raw form is also FDA and EU commission regulation approved as Food Contact Safe.

Print temp : 235 – 255°C 

Heated Bed : 65 – 85°C​

Speed range : 30 - 60mm/s optimal

Printability : Moderate

Net Weight: 1kg

What's in the box ?

1 x SA Filament  PETG Green (1.75mm)

Description:

The MAX7219 are compact, serial input/output common-cathode display drivers that interface microprocessors to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. 



Specifications:

1 single module can drive an 8 * 8 dot matrix common cathode
Module Operating voltage: 5 v
Module dimensions: length 32 mm X 32 mm wide X 13 mm high
4 mounting holes : diameter of 3 mm
Support for cascading multiple modules

Wiring instructions:

VCC: 5 v
GND: GND
DIN: P2.2
CS: P2.1
CLK: P2.0