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ST EDU - SimplyTronics Educational Board



The ST-00101 ST EDU is an ideal project board that integrates the Arduino Uno (based on the ATmega 328 microcontroller and the ATmega16U2 as the USB-to-serial converter), an easy-to-use breadboard prototyping area and a power management circuit for charging two 18650-size rechargeable batteries. If you want a version of this board without rechargeable battery circuit, you can use ST EDU-S ST-00088 instead.

ST-00101- ST EDU front new.JPG ST-00101- ST EDU back new.JPG

Product Features

  • Microcontroller: Atmega328
  • 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, 6 servo/sensor ports and a reset button
  • USB connector for programming or charging the batteries
  • Holds two rechargeable/replaceable 3.7 volt Li-ion 18650-size cells, and the batteries can be charged from a 7.0-9.0v AC-to-DC adapter or a 5v USB port (without taking them out of the board)
  • Multiple LEDs provide power indicators, communication indicator, charge readiness information and low battery indicator
  • Over-current charge protection prevents harm to batteries
  • Breadboard and power/signal headers for handy prototyping area
  • 3-position power switch for powering the headers only or powering header + X9 port
  • Jumper for power selection of X9 header: regulated (5V) or unregulated (Vin)
  • High current output capabilities for robotics applications (up to 1 Amp at 5 Volts)

Technical Details

  • Charging Power Requirements: 7.0-9V @ 1A (min.); 2.1mm barrel jack, center positive
  • Charging Voltage (recommended) :7.5V
  • Charging Voltage (limits): 7.0-9.0V
  • Charging Time: 1-6 hours or more, depending on the discharge level and capacity of the batteries
  • Charging Current:
    • AC-to-DC adapter: max. 800mA
    • USB port: max 400mA
  • DC current output from 3.3V header : Max. 1000mA
  • DC current output from 5.0v header: Max. 1000mA
  • DC current output from Vin header : 1800-2600mA (depending on the batteries used)
  • Output voltage from Vin header: max. 8V, depending on the voltage of the charged batteries
  • Dimensions: 4" x 3.05" (102 x 77.5 mm)
  • Operating temp range: 32 to 158 °F (0 to 70 °C)
  • Arduino UNO compatible microcontroller details:
    • Microcontroller: Atmega328
    • Flash Memory: 32 KB
    • SRAM: 2KB
    • EEPROM: 1 KB
    • Clock Speed: 16MHz
    • Digital I/O Pins: 14 (of which 6 provide PWM output)
    • Analog Input Pins: 6
    • DC current per I/O Pin: 40mA

Warning: Voltage-sensitive Device

  • The ST EDU contains many components that require proper supply (voltage and current) to operate. Connecting mistakes in the prototyping area can damage some components permanently.
  • Disconnect all power (Power Switch to 0 -zero) before making or removing any connections
  • Do not reverse polarity of the power connections and/or batteries. It could damage the board

Module Dimensions

Product 3D Size.jpg ST-00101-Size.jpg

Resources and downloads

The ST EDU is based on Open Source Hardware with Creative Commons Attribution Share-Alike design (from the Arduino Uno) so we are currently releasing the schematic as Open Source with the same license requirements that Arduino Uno design.