Project Description

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Project description
This board is targeted to be used for motorized cellular shades. The board dimensions are constrained to fit inside the shade's top housing. The board has a current sensor to monitor the motor strain to tell whether the shade is being pulled up or let down. The board allows for a LiPo battery and solar panel so that the motorized shade doesn't have to be connected to a power source. The board has a buck converter to boost the battery voltage to 12 volts for the motor.
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Design Files

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Component (52)
Qty
Description
Capacitor

C20

1
Generic Capacitor (22nF)
INA219BID

U1

1
Zerø-Drift, Bi-Directional CURRENT/POWER MONITOR with I 2C™ Interface
LM3671MFX-3.3

U4

1
2MHz, 600mA Step-Down DC-DC Converter in SOT23-5 and 5-Bump Micro SMD
Resistor

R16

1
Generic Resistor (10K)

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