Thursday, August 27, 2015

Ballooning Cost

So my costs have gone well beyond the initial $400 I wanted to spend, heck the flight goggles were $288! So I am at a crossroad, do I buy the nice stuff for everything and spend over $1000? Or do I start slashing costs and build an inexpensive beater to drive all my costs below $700?

Current BOM

PartsQTYPriceTotal
Frame1$15.00$15.00
Motors4$20.99$83.96
Speed Controllers (ESCs) 3S4$8.30$33.20
Power distribution board and battery lead1$2.00$2.00
Step Down Reg1$3.00$3.00
Liquid Electrical Tape1$7.89$7.89
Zip Ties1$12.77$12.77
Propellers 8 pairs2$12.49$24.98
3S Battery (more than 1 recommended)3$17.87$53.61
Lost Model, Battery Alarm, Lost Signal1$4.93$4.93
Charger1$24.50$24.50
Flight controller1$25.00$25.00
Radio transmitter mode 21$64.99$64.99
Trainer Cable1$2.35$2.35
Case1$13.93$13.93
Radio receiver1$11.44$11.44
Lock Nuts For Props0$4.25$0.00
Video Transmitter1$69.99$69.99
Video Receiver1$43.99$43.99
Super Simple OSD0$9.01$0.00
5.8 GHz antennas0$0.00
Video Camera1$66.99$66.99
Flight Googles1$325.00$325.00
Hardware1$16.00$16.00
4x M3 20mm screws4$0.00
8x M3 18mm screws8$0.00
4x M3 12mm screws4$0.00
12x M3 5mm screws12$0.00
4x M3 5mm nylon screws4$0.00
6x 35mm black aluminum spacers6$0.00
4x 6mm M3 white nylon spacer4$0.00
4x M3 white nylon nuts4$0.00
16x M3 Locknuts16$0.00
8x M3 nylon washers8$0.00
8x M3 metal washers8$0.00
6x 7mm size vibration dampeners6$0.00
Total$905.52
Quad$399.55
Vision System$505.97

To be honest I am leaning towards slashing costs and making a beater for a couple of reasons. 

  1. I am new to flying quads
  2. I want to be able to have fun flying it and not worry about crashing all the time
  3. I want to be able to fix it cheaply
  4. I want to fly it in cool places which will probably have a lot of obstacles (read crashing a lot)
  5. I can always upgrade the system
  6. I already own one of the most expensive parts, the flight goggles (splurged on the Dominator V2)
  7. I can upgrade to really good parts after I have talked to other more experienced flyers and get their input on the best hardware
The above list seems pretty compelling to me, so I think for now I am going to work on reducing the cost.

Quad BOM 2.0

PartsQTYPriceTotalVoltage (V)Shipping FromLink
Frame1$15.00$15.00ABS Filament
Motors/ESC1$55.09$55.09ChinaLink
Power distribution board and battery lead1$2.00$2.00USALink
Step Down Reg1$3.00$3.00USALink
Liquid Electrical Tape1$1.97$1.97USALink
Zip Ties1$3.19$3.19USALink
Propellers 8 pairs8$2.15$17.20ChinaLink
3S Battery (more than 1 recommended)3$17.87$53.61USALink
Battery Connector (5 pack)1$6.89$6.89USALink
Lost Model, Battery Alarm, Lost Signal1$4.93$4.937.2 - 25.2USALink
Charger1$24.50$24.50ChinaLink
Flight controller1$25.00$25.004.8 - 15ChinaLink
Radio transmitter mode 21$64.99$64.99ChinaLink
Trainer Cable1$2.35$2.35ChinaLink
Case1$13.93$13.93USALink
Radio receiver1$11.44$11.443.7 - 9.6USALink
Video Transmitter1$22.99$22.997 - 24USALink
Video Receiver1$43.99$43.99ChinaLink
Video Camera1$35.00$35.005 - 22ChinaLink
Flight Googles1$288.17$288.17DoneLink
Hardware1$16.00$16.00USALink
Total$711.25
Quad$338.31
Vision System$390.15

Reduced the cost by just about $200.00. Not bad, and just shy of my aim for $700

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