Required Parts - WaterCam-Team/documentation GitHub Wiki
Jump to: Watercam Unit Parts || Optional Items || Tools & Accessories
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↳ For Raspberry Pi
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Optical Camera w/ controllable NIR filter (IR-CUT)
↳ This should come with a ribbon cable to connect to the Pi 4B
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Witty Pi 4 HAT - RTC & Power Management for Raspberry Pi
↳ Witty Pi 4 supports 3A power output for the Raspberry Pi 4
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Flir Lepton 3.5 and Flir Breakout Board v2
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↳ To connect Flir until we get a custom PCB made
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LWIR (8-14 micron range) Infrared Material Window
↳ To protect the Flir lens
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↳ To connect Adafruit sensors to Pi units
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↳ For chaining Adafruit sensors to other Adafruit sensors
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↳ For 055 IMU- for motion detection / orientation reporting
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Adafruit AHT20 - Temperature and Humidity Sensor
↳ For monitoring device health
Other batteries, such as the V75, work but we recommend the V50.
We are using Voltaic battery packs because they do not auto-shutdown during low power draw. Since this system will be in low-power mode most of the time, losing power would prevent it from starting up again. These units are intended to be directly charged from 6V solar panels using a barrel jack to USB-C adapted (or micro USB for older versions).
If opting to use a battery that is not always on: configure the WittyPi to draw more power when idle to avoid losing power.
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↳ Use a 6-volt panel if charging Voltaic battery pack directly
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↳ Preferably higher capacity than needed (at least 64GB). Consider "high endurance" or "industrial" for temperature tolerance.
↳ Test the SD cards with F3: Fight Flash Fraud to verify they are legit
If unsure which is best for you, further information can be found here.
TODO: Alternatively boot from USB SSD - this has pros/cons
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Dual USB-A to single USB-C cable to connect Voltaic power pack to WittyPi 4, preferably with right angle connectors for smaller cases. Only the USB-A ports on the Voltaic packs are always on, and each outputs 2.5A max, 3A together, so we need a Y power adapter.
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Cellular modem with USB Adapter board:
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↳ 3 antennas needed, 2 for cellular, 1 for GPS.
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Cables to connect Antennas to Cell Modem
↳ Get appropriate cables to connect to uFL on the cellular board.
↳ SMA male antennas need SMA female cables, RP-SMA antennas likewise need the correct cables.
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USB A Right Angle Up Adapter Cable for Modem
↳ Only if the modem board does not otherwise fit in your case. A 150x150x90 case is too small to directly install the modem into the USB port on the Raspberry Pi.
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SIM Card for Cell Modem- 1nce for example has a data plan targeting IoT devices
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↳ RP-SMA connector needed on 915 MHz antenna
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Female-Female 2.54 to 2.0mm Jumper Wires
↳ 2mm pitch header cables for connecting mDot to Raspberry Pi until we get a custom PCB made
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Cable gland to let solar panel power cable into case
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Anti-fog spray/hydrophobic coating for lens
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Desiccant packs: Example One || Example Two
↳ Will need to be dried for reuse
Tools will be used repeatedly through the building process. Do NOT order multiples.
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↳Protects electronics from water. Do not apply to any connectors.
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Silicone sealant for water-resistance
↳ Use to seal holes in cases
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Ethernet Cable
↳ So you can connect to a network for updates and initial configuration. I shared the WiFi connection on my laptop with the Pi over Ethernet using Network Manager's connection sharing on Linux. Other operating systems have similar functionality.
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↳ Useful for logging into the Pi before networking has been configured, and for debugging/troubleshooting.
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Drill
↳ For creating openings in case for cable gland, antenna sockets (if antennas don't fit in the case or need to be external), and camera apertures
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MicroSD Reader