Parts list: 1. 8‐port PoE injector ‐ http://www.amazon.com/WS‐POE‐8‐ENC‐Multi‐Passive‐
Injector‐devices/dp/B0075F7F2O/ref=pd_cp_pc_0‐ US$25.00 2. Voltage regulator (0‐30VDC in 0‐30VDC out) http://www.aliexpress.com/item/20‐PCS‐LOT‐LM2596‐DC‐DC‐Converter‐Step‐
Down‐Module‐4‐40V‐to‐1‐5‐35V/524053875.html $5/each 3. Appropriate 12VDC to 30VDC power supply (Add 0.5A per camera). A standard laptop charger (19V, 4A) works great ‐ $5 to $15 4. Some scrap cat 5 ethernet cable 5. Heatshrink tubing (not necessary but cleaner install) $4 (harbor freight) WARNING: This involves opening the camera which will undoubtedly void the warranty. Camera preparation: 1. Remove the camera base and locate the pins of the RJ45 socket. Two pairs of these pins are not used. 4 & 5 (+), and 7 & 8 (‐) 2. Carefully solder 6” leads to each of these pair as shown in figure 1. Take care not to accidentally solder more than these four pins. 3. Locate the underside of the 5VDC barrel port, identifying the 5V+ and neighboring ground terminals. 4. Solder another pair of 6” leads to these two points. Use the same color wire from pin 4 & 5 (+) as the wire connected to the 5V terminal on the barrel port terminal. Likewise, the same color wire for pins 7 & 8 (‐) and the ground (‐) terminal on the barrel port. See figure 2 5. Twist the two negative leads together and solder them. This end will be soldered to the common ground (‐) on the regulator board. Voltage regulator preparation: 6.
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Connect a 12 to 30VDC power supply to the input terminals on the voltage regulator (alligator clips work good for this part) While metering the output terminals, turn the small flat headed pot until the output voltage reads 5.10VDC. This is critical. Even slightly too high, and you’ll have a flakey camera. Solder the wire from pins 7&8 to the “‐IN” on the regulator Solder the wire from pins 4&5 to the “+IN” on the regulator. Solder the wire from the +5V pin on the camera PCB to the “+out” on the regulator. Solder the wire from the ground pin on the camera PCB to the “‐out” on the regulator. Switch‐side of Ethernet cable 1. After installing the 8 port injector, connect a 12 to 30VDC power supply to the DC input on the injector. 2. Connect standard Ethernet cable between modified camera and injector’s PoE port 3. Connect another cable between the switch/router and the injector’s “data” port. Testing At this point, 12VDC is pushed through the cable to the camera. If all is working correctly, the camera should also turn on and go through it’s normal bootup cycle. Remove the single screw holding the camera PCB to the housing. Remove the board enough to access the inside of the camera base. Apply a small amount of double‐stick tape to the insulated regulator, and attach to the PCB as shown. Make sure no wires bind with the motors or the board as it is reassembled. Note: The photos of the heat shrinked regulator above are from a previous design. The new variable voltage regulator described in the text above is slightly larger, but will still fit between the camera’s PCB and the camera housing.