Beautiful Black Eyes

The HC-SR04 Ultrasonic Sensor finally arrived.  Ordered in March, arrived in May.  The price was cheap with free shipping.  At $2.00 for both the sensor and the yellow mount, I was willing to wait for the parts ship on a slow boat from China. The HC-SR04 sensor works by sending …

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M2.5 Standoffs Arrive

The M2.5 Standoffs (Spacers) arrived in the mail yesterday.  The original standoffs that I ordered were M2 or 2 mm size.  The Raspberry Pi board has holds for standoffs that are 2.75 mm in diameter.  No M2.5 standoffs showed up in my initial Internet search for parts.  Wasted time and …

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The Wheels are On

Today, the assembly of my robotic car started.  The motor and wheels were attached to the platform. My first mistake became obvious when I tried to solder wires onto the DC motors.  I purchased wires of a gauge too big for the connectors on the motors.  18 gauge wire is …

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