LilyGO Open-Smartwatch Kit - T-Micro32

Availability: Directly available from warehouse in Eindhoven
SKU: 004254

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€34.50

Ex Tax: €28.51

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Description
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The LilyGO Open-Smartwatch is a smartwatch, designed by pauls_3d_things, based on a T-Micro32 module. The smartwatch has a 1.3 inch display, RTC module, accelerometer and more. The built-in USB to serial converter makes it easy to program via the micro USB connection.

See the following page for more information: Open Smartwatch

Note: The case is 3D printed, which may be the cause some minor imperfections, like discoloration.

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Tags: LilyGO Open-Smartwatch Kit - T-Micro32 , LILYGO-H487-A , With Bluetooth

Specifications

General
Brand	LilyGO TTGO
Manufacturer model/SKU	H487-A
Model revision	V3.2
Features	Battery charger Display Microcontroller Temperature sensor Battery protection circuit Enclosure RTC Battery Acceleration sensor
General physical appearance
Main color	White
Weight [g]	45
Form factor	Wristband
General electrical properties
Minimum supply voltage [V DC]	5 (lower possible via Li-ion/Li-Po battery)
Maximum supply voltage [V DC]	5
Minimum IO-pin input voltage [V]	3.3
Maximum IO-pin input voltage [V]	3.3
IO-pin output voltage [V]	3.3
MCU/SoC
Manufacturer	Espressif
Chip series	ESP32-PICO
Maximum clock frequency [MHz]	240
Number of cores	2
Internal memory
SRAM [KB]	520
PSRAM [MB]	0
Flash memory [MB]	4
EEPROM type	Emulated
Communication
Hardware interface(s)	USB CDC
Number of IO-pins	0
USB to serial converter	CH340E
Wireless communication
Interface(s)	Wi-Fi Bluetooth
Wi-Fi chip/SoC	ESP32-PICO
Wi-Fi frequency [GHz]	2.4
Bluetooth chip/SoC	ESP32-PICO
Bluetooth version	4.2
Supported Bluetooth standard(s)	LE Classic
Display
Type	TFT
Driver	GC9A01
Screen diagonal [inch]	1.3
Number of pixels long side	240
Number of pixels short side	240
Display shape	Round
Pixel colors	RGB
Temperature sensor
Sensor (chip)	BMA400
Minimum measuring range [°C]	-40
Maximum measuring range [°C]	87.5
Maximum resolution [bit]	8
Accuracy [±°C]	5.0
Acceleration sensor
Sensor chip/SoC	BMA400
Degrees of freedom (DOF)	3
Maximum measuring range [±g]	16
Maximum resolution [bit]	12
RTC
RTC chip	DS3231
Back-up battery/capacitor	None
Battery circuit
Battery charger chip/SoC	MCP73831
Supported battery chemistry	Li-ion Li-Po
Maximum charging voltage [V]	4.2
Maximum charging current [mA]	200
Adjustable charging current	No
Protection circuit	Yes (note: in battery, not in the module itself)
Safety features	Short circuit Overvoltage Overcurrent Undervoltage
Battery
Chemistry	Li-Po
Rechargeable	Yes
Capacity [mAh]	350
Maximum cell voltage [V]	4.2
Connectors
Power supply connector(s)	Micro USB female
IO-connector(s)	Micro USB female
Battery connector(s)	Wire solder pin(s)/pad(s)
Wi-Fi/Bluetooth antenna connector	Built-in antenna IPEX MHF 1/uFL male (requires modification)
Package contents
Package contents	1x Open Smartwatch - T-Micro32 1x Battery 1x Battery Cable 1x Enclosure bottom 1x Enclosure top 4x Button cap 4x Mounting screw 1x Wristband