This page gives an overview about the required components and lists advantages and disadvantages for each of them.
Also included must be:
- prize
- power consumption
- size and weight
- possibly required modules or connectors for the micocontroller communication
- if nessecary: a circuit plan (created with Eagle)
Frame
DJI FlameWheel F450
- Cost: 169€
- Size: 450mm Diagonal
- Weight frame alone: 282g
- Takeoff Weight: 800g-1200g (1600g? Depending on sources)
- Will need cable ties
- Power distribution board already built in
- Propellers included
Microcontroller
Arduino Mega 2560
Links: store.arduino.cc/product/A000067
http://www.arduino.cc/en/Main/ArduinoBoardMega2560
- 16 MHz
Lenght | 101.52 mm |
Width | 53.3 mm |
Weight | 37 g |
Battery
3S will presumably be enough
For weight reasons: probably ca. 2000mAh?
Weight: 162g
Price: 28,16€
Output: 11,1V
--> Voltage Controller (e.g. IC7805) required, probably multiple? Low cost, Arndt will bring some, maybe we can buy them off him, if he doesn't mind?
--> May need some that are lossless? -> mc35063 but higher cost!
--> Some people say we will need a step down module, because Voltage Controllers will offer too much variation in their voltage/current: http://www.electrodragon.com/product/lm2596s-adj-dc-dc-small-tiny-adjustable-step-down-module-3-40vin-1-5-35vout/ is recommended, but only outputs 3A?
==> Need a lot more information, might look into it more tomorrow?
LiPo-Warners
Connection to the microcontroller will have to be done by ourselves. So I don't know how many pins we might need. Will have to talk to someone who might know more, internet doesn't really give much insight. Maybe I'll make a post about it somewhere?
Links: Amazon
Cost: 7€
weight: 9g
Motors
DJI Motor 2212/920 rpm/V
- Voltage: 11,1 bis 14,4V
- Standard Current: 15-25A
- Max Current: 30A
- Required Batteries: 3S-4S LiPos
- Weight: 56g each (including Propeller Adapter)
Calculation Site: http://www.ecalc.ch/xcoptercalc.php?ecalc&lang=de
In case this helps anyone...I don't think my calculations were correct so it didn't help me much
Electronic Speed Controller (ESC)
DJI Brushless Regler 30A OPTO (?)
- Voltage: 6-16.8V
- Connects to a receiver -> Might need to reverse engineer that thing or the cable, don't know much about that
- Orange Cable carries signal: freq. 30hz-450hz (most people i've seen used 400hz)
- Brown Cable is ground, red one useless apparently
http://wiki.dji.com/en/index.php/ESC
http://www.sarkanyellato.hu/wp-content/uploads/2011/10/RC-Timer-10.18.30.40A-ESC-Instruction.pdf
Replacement parts for Controller/Arms: https://copterdeluxe.com/Multi-Rotor-Copter-Ersatzteile-DJI-Hobby-F450 (Currently not available?)
Gyro & Acceleration Sensors
MPU-9150. All in one kit. Gyro, Acceleration and Compass.
Links: Amazon: http://www.amazon.de/GY-9150-MPU-9150-Achsen-Kompass-Accelerometer-SE05014/dp/B00VRJEA7C/ref=sr_1_1?ie=UTF8&qid=1430578388&sr=8-1&keywords=MPU-9150
Specification: http://www.invensense.com/mems/gyro/documents/PS-MPU-9150A-00v4_3.pdf
Cost: 20.59€
Operating Voltage Supply: 2.4V-3.46V
Logic Supply Voltage: 1.8V +- 5% or VDD
Communication via I2C-Bus
Proximity Sensors
4-Pin Ultrasonic-Module HC-SR04
Probably we will need 10 of this sensors, but first we will try to fly with 6.
Links: Amazon, datasheet, short instructions
Cost: 10 x approx. 2€ ≈ 20€
Power Supply: +5VDV, 10 x 15mA working current
weght: 59g
Pins: 2 GPIO, VCC, GND
- VCC = +5VDC (GPIO)
- Trig = Trigger input of Sensor (5V Digital GPIO)
- Echo = Echo output of Sensor (5V Digital GPIO)
Important: Outputs 5V. If the microcontroller can only handle 3.3V inputs, we need to build an easy voltage divider. - GND = GND (GPIO)
Radio Telemetry Kit
Aukru HC-06 Wireless 4 Pins Bluetooth RF Transceiver Serial Module
Links: Amazon, instructions, instructions, instructions
Cost: 9€
size: 4.3 * 1.6 * 0.7cm
weight: 9g
Power Supply: 3.3V - 6V, approx. 50mA
Pins: 2 GPIO, VCC, GND
- VCC = +3.3VDC / +5VDC (GPIO)
- TXD = Trigger input of Sensor (RXD (serial) Digital 0)
- RXD = Echo output of Sensor (TXD (serial) Digital 1)
- GND = GND (GPIO)
Price summary
- 253,75€ + Microcontroller
- If we use the Arduino Mega from the office, we won't need any extra cost for the microcontroller