Open Sky Anchor WiFi Drone Brings The GIG

1. Build Thrust and wattage table

2. Test wattage  and thrust is current prop choice. 10x4.5

3.  Weigh new manufactured PCB Meanwell PSU boards

4. attach connectors to the psu 

5. Perform a burn in test to  500 watts continuously and monitor temps as well while doing so.

6. test run one psu with 2 motors running full throttle, check wattage and make sure the psu can handle the continuous use.

7.  Load firmware onto the new Pix Hawk PX4 FMU.

8. Swap  out 6 of the ESCs for the new 420 models so they whole layer are matching equipment.

9. 3D print mounts and fan shrouds for the new PSU printed circuit boards. They need constant airflow of at least 25 cfm, hopefully we can avoid this with clever positioning of the  board close to the prop wash.

10. After new equipment swapped the air frame needs to be balanced from the back again.

Hello guys, I am putting a couple posts in here and I will move some pictures from my phone. I assessed the damage and ordered parts for the next version.  As stated in the most recent flight the 220v Step UP converter pushed well over 275 volt thresh hold causing damage to one ESC and also the sensors on the Pixhawk no longer worked. A couple of ESCs were not spinning up the props as fast , they seemed to only have half the throttle response.  That being said we have a few parts that just arrived.

7 of the DJI 420 ESCs because the e300 have been discontinued buying individually. 

1 Radiolink Pixhawk PX4  set to replace this one

2-2212kv motors to swap the overvolted motors that were not putting out full power.

Since the machine is basically grounded at this moment I took the time to move from Proto Board lightweight power supplies to subcompact light ones made for me from Meanwell special order. They are .4kg each, right at 1 pound, so 4 (2000 watts worth) is approx. 4 pounds. I will weight them and give comparisons with pictures too.

I am building a wattage test bench as well to tune the power supplies to the motors, adjusting voltage so we arrive at the best sweet spot for wattage to lift ratio. Right now the estimated mas is 22 pounds of thrust/lift, but this needs to be confirmed using the new power supplies. Surprisingly these power supplies only run a bout 108 dollars each where I think I spent around 230 each building my own. I guess Prototyping always costs more money than the end product !!

more pics outside after a test flight, the boost up converter (110v to 220v) is defective and pumped over 280 volts into the PSUs. The flight electronic appear to be ok but now it tips to one side when I tested it after the 220v boost up converter did the bad thing. That being said I can swap to another couple PSUs or rebuild what I have. Anyways this is version 3 so I already have some videos of it flying at the moment. It is a proof of concept, with continued improvement. I’m taking a break for the evening.

I had to balance and adjust 4-5 times to get the drone to sit label balanced on the tips of the motor shafts. The power supply rack needed to slide forward over an inch as well as the 5G dish. Zip ties on the front and back of the rails keep the power supplies in the balanced position. Any changes in the future require this balance to be adjusted to keep the power consumption down for extended hovering.

Wireless Access Point... :)

All 12 of the ESC power wires, the pixhawk power, RC receiver power, Nav LEDs, 2  POE injectors and more need to have ends terminated, soldered and connected. Also I like to label stuff which is super helpful when you need to troubleshoot.

3D printed FAA Registration Plate for UAV / Drones Part 107.