Installation Checklist

Use this checklist to verify your hardware installation is complete before proceeding to configuration.

Mounting

• [ ] Controller box is securely mounted to aircraft structure
• [ ] Mounting location allows access to SD card slot
• [ ] Mounting location allows access to USB port
• [ ] You've noted the box orientation (which way ports face, which way top faces)

Pneumatic

• [ ] Pitot line connected from aircraft pitot system to controller pitot port (tee fitting)
• [ ] AOA line connected from AOA probe to controller AOA port
• [ ] Static line connected from aircraft static system to controller static port (tee fitting)
• [ ] All tubing secured with clamps — no kinks, no unsupported runs
• [ ] All fittings tight and leak-tested
• [ ] No low spots in tubing where moisture could collect

Electrical — Required

• [ ] Power wire connected to aircraft bus through a circuit breaker or fuse
• [ ] Ground wire connected to aircraft ground bus
• [ ] Circuit breaker labeled "OnSpeed" or similar

Electrical — Audio

• [ ] Audio output connected to audio panel or headset (see Audio Wiring)
• [ ] Audio ground connected
• [ ] If using stereo: both left and right channels connected
• [ ] Audio panel input configured and enabled (if applicable)

Electrical — Optional

• [ ] EFIS serial: TX from EFIS connected to OnSpeed RX (GPIO 11)
• [ ] Flap position sensor: potentiometer or jumpers wired and connected
• [ ] Volume potentiometer: wired to ADC input (if using hardware volume control)
• [ ] Button/switch: wired between GPIO 12 and ground
• [ ] Status LED: wired to GPIO 13 (if desired)
• [ ] OAT sensor: DS18B20 wired to GPIO 14 with pull-up resistor (if no EFIS OAT)
• [ ] External display: serial TX (GPIO 10) connected to display RX
• [ ] Boom probe: serial RX (GPIO 3) connected to boom TX (if applicable)

SD Card

• [ ] microSD card inserted (FAT32 formatted)
• [ ] Card is seated fully in the slot

Before First Power-On

• [ ] Double-check all wiring — especially power polarity
• [ ] Verify no exposed wire connections that could short
• [ ] Verify audio panel is configured to accept the OnSpeed input channel
• [ ] Have the OnSpeed WiFi credentials ready: SSID OnSpeed, password angleofattack

Next Step

Power on and proceed to First-Time Setup.