Free Shipping! keyestudio UNO R3 Development Board + USB Cable Compatible for Arduino


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Product Description




keyestudio Uno is a microcontroller board based on the ATmega328P-PU. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button.

It contains everything needed to support the microcontroller. You can simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

Technical Specs

Microcontroller        ATmega328P-PU
Operating Voltage        5V
Input Voltage (recommended)      7-12V
Digital I/O Pins        14 (of which 6 provide PWM output)
PWM Digital I/O Pins               6
Analog Input Pins         6
DC Current per I/O Pin        20 mA
DC Current for 3.3V Pin       50 mA
Flash Memory       32 KB (ATmega328P) of which 0.5 KB used by bootloader
SRAM               2 KB (ATmega328P)
EEPROM          1 KB (ATmega328P)
Clock Speed        16 MHz
Length     68.6 mm
Width         53.4 mm
Weight               25 g


1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board.

In future, shields will be compatible with both the board that uses the AVR, which operated with 5V and with the Arduino due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
Stronger RESET circuit.
Atmega 16U2 replace the 8U2.



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Shipping: Please allow about 5-10 business days for delivery. For delivery to Alaska or Hawaii, please allow 10-15 days for delivery. For delivery to PO Boxes in Alaska, Hawaii, US Territories and APO/FPO addresses, allow three weeks for delivery.

Backorders: All backordered items will be shipped via Standard Delivery service at no additional charge.

Returns Policy: You may return new, unworn or unused products within thirty (30) days of delivery for a full refund of the cost of the goods, or an exchange if preferred.

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