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Amazon.com: Servo Driver HAT Board for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+ 16-Channel Servo/PWM Outputs with I2C Interface Used for Controlling Robotic Arm or Hexapod Walker : Electronics
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Amazon.com: 4-CH Current/Voltage/Power Monitor HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/W, I2C/SMBus Interface Onboard 0.1Ω 1% Sampling Resistor Measure Bi-Directional Current up to 3.2A Embed 12-bit ADC : Electronics
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