Hardware

1. Assembly

1.1. Completed Assembly

This is what a completed assembly looks like

1.2. Assembly Steps

2. CAD Files

2.1. Download

Files can be accessed and downloaded here

2.2. Descriptions

2.2.1. Antenna Holders

• Mounting arms that hold the main antenna end for extending and retracting

  Antenna_Arms_-_Antenna_support_3-1.STL

  Antenna_Arms_-_Antenna_support_4-1.STL

• Reflector Antenna holders

  Reflector_support_1.STL

• Central mount that attaches to the top of the center encoder to hold the main anatennas

  antenna_center_tall.STL

2.2.2. Bracket Holders

• Bracket of Raspberry Pi that can be mounted by sliding in and out of a mounting position

  Pi_holder.STL

• Bracket of HackRF that can be mounted by sliding in and out of a mounting position

  hackRF_holder.STL

2.2.3. Circuit Case

• Bracket of Circuit Case that can be mounted by sliding in and out of a mounting position

  Circuit_case_holder.STL

• Custom case of PCB

  circuit_case.STL

2.2.4. Encoder Mounts

• Reflector Encoder Mount

  encoder_mount_3.STL

• Main Antenna Encoder Mount

  encoder_mount_4.STL

2.2.5. Main Antenna Assembly

• These combine to make a fully assembled base of the Main Antenna

  Assembled_antenna_2_-_antenna_base-1.STL

  Assembled_antenna_2_-_antenna_base2-1.STL

  Assembled_antenna_2_-_antenna_base3-1.STL

  Assembled_antenna_2_-_antenna_base4-1.STL

  Assembled_antenna_2_-_antenna_base5-1.STL

  Assembled_antenna_2_-_antenna_base6-1.STL

  Assembled_antenna_2_-_antenna_base7-1.STL

  Assembled_antenna_2_-_antenna_nut-1.STL

2.2.6. Microphone Holders

• Similar to Antenna arms, these parts are for holding the 2 opposite pointing electret microphones in order to scan for sounds and sound origins

  mic_support_1.STL [Main Antenna Holder] (x1)

  mic_support_2.STL [Reflector Holders] (x2)

  mic_support_3.STL [Main Antenna Holder (lowest sitting rail)] (x1)

2.2.7. Microswitch Mounts

• These mounts hold the microswitches for homing function

  Microswitch_mount.STL [Holders for Main Antenna Microswitches] (x2)

  Microswitch_mount_reflector.STL [Holders for Reflector Microswitches] (x2)

2.2.8. Motor Holders

• These are for holding the motors in place

  motor_bracket_3.STL [Main Antenna Motor Holder]

  new_motor_mount.STL [Reflector Antenna Motor Holder]

• Main Antenna Motor Brace that mounts the Main Antenna Motor Holder to the rail

  motor_bracket_brace.STL

2.2.9. V-Rails

• Longer legs that hold the higher section of the Main Antenna Track

  V-Rail_long_leg.STL (x2)

• Shorter legs that hold the lower section of the Main Antenna Track

  V-Rail_short_leg.STL (x2)

• V-Rail that the Carriage Plate uses to guide the Main Antennas (27 cm)

  V-Rail_track.STL (x2)

• Legs that hold the Reflector Antenna Track and will act as motor and microswitch mounting

  V-Rail_Reflector_leg.STL (x4)

• V-Rail that the Carriage Plate uses to guide the Reflector Antennas

  V_Rail_track_2.STL (x2)

2.2.10. V-Wheel Assembly

• Creality X Carriage Plate (the plate used by the belt drive on the rail systems to move the antennas)

  Creality_X_Carriage_Plate.STL (x4)

• These parts combines with the Creality X Carriage Plate to create the complete V-Wheel Assembly

  assembled_v-wheel_-_bearing-1.STL

  assembled_v-wheel_-_bearing-2.STL

  assembled_v-wheel_-_spacerexternal-1.STL

  assembled_v-wheel_-_spacerinner-1.STL

  assembled_v-wheel_-_wheel-1.STL

2.2.11. Wiring Channel

• Channel that guides small groups of wire into position

  Wiring_Channel.STL

2.2.12. Rotary Encoder

• Stand-in model for the rotary encoders being used

  rotary_encoder.STL

3. Electrical Components

3.1 Circuit Components

• Pololu A4988 Motor Driver
• Nema 17 Bi-polar 0.9 Degree Stepper Motor [17HM08-1204S]
• Incremental Photoelectric Rotary Encoder 400 P/R [SEN0230]
• SPDT Omron Microswitch

3.2 Software Defined Radio

• HackRF One Great Scott Gadgets

3.3 Power Supply

• AC/DC Adadpter - 24VDC 2.5A [RPR-2402A5-P5]

4. Circuit Diagrams

4.1. Label Definition

Label Name	Description:
MMA -	Main Antenna Motor Coil 1 Negative Lead (Black)
MMA +	Main Antenna Motor Coil 1 Positive Lead (Green)
MMB +	Main Antenna Motor Coil 2 Positive Lead (Red)
MMB -	Main Antenna Motor Coil 2 Negative Lead (Blue)
RMA -	Reflector Antenna Motor Coil 1 Negative Lead (Black)
RMA +	Reflector Antenna Motor Coil 1 Positive Lead (Greed)
RMB +	Reflector Antenna Motor Coil 2 Positive Lead (Red)
RMB -	Reflector Antenna Motor Coil 2 Negative Lead (Blue)
MEP	Main Antenna Encoder Power Pin (White)
MEA	Main Antenna Encoder A Pin (Red)
MEB	Main Antenna Encoder B Pin (Green)
MEG	Main Antenna Encoder Ground Pin (Black)
REP	Reflector Antenna Encoder Power Pin (White)
REA	Reflector Antenna Encoder A Pin (Red)
REB	Reflector Antenna Encoder B Pin (Green)
REG	Reflector Antenna Encoder Ground Pin (Black)
MS1NO	Main Antenna Microswitch 1 Normally Open Contact
MS1NC	Main Antenna Microswitch 1 Normally Closed Contact
MS1C	Main Antenna Microswitch 1 Common Contact
MS2NO	Main Antenna Microswitch 2 Normally Open Contact
MS2NC	Main Antenna Microswitch 2 Normally Closed Contact
MS2C	Main Antenna Microswitch 2 Common Contact
RS1NO	Reflector Antenna Microswitch 1 Normally Open Contact
RS1NC	Reflector Antenna Microswitch 1 Normally Closed Contact
RS1C	Reflector Antenna Microswitch 1 Common Contact
RS2NO	Reflector Antenna Microswitch 2 Normally Open Contact
RS2NC	Reflector Antenna Microswitch 2 Normally Closed Contact
RS2C	Reflector Antenna Microswitch 2 Common Contact

4.2. Circuit Schematics

4.3. Wiring Diagram