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This project by Ronny Thiesies and Tom Schubert explores the development of a Raspberry Pi-powered car, remotely controlled via an Android device. Utilizing a WiFi hotspot for communication, the prototype features video streaming from a camera with adjustable frame rates and resolutions. The control system is optimized for efficient motor operation using AA batteries and a rechargeable unit for the Raspberry Pi. The total estimated cost is approximately 250 EUR, comprising various components from motors to structure. The project emphasizes the benefits of WiFi over alternatives like Bluetooth and IrDA.
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Raspberry Drive Ronny Thiesies Tom Schubert
Anforderungen • Steuern eines Raspberry-Autos via Android • Kommunikation mittel WLAN-Hotspot • Übertragung einer Kamera
Wieso WIFI? Controller: 45 Byte je 100ms = 3,5 kBit/s Kamera: 320 * 240 Pixel * 16bit Farbtiefe * 75% (JPEG) mit (10-30 FPS) = 9 Mbit/s bis 30 Mbit/s
Wieso WIFI? IrDA (v. 1.3): 16MBit/s (Reichweite < 1m) Bluethoot (v.3): 24Mbit/s (Reichweite<100m) Bluethoot (v 4): 1Mbit/s (Reichweite < 100m) WIFI (802.11) : 54Mbit/s (Reichweite>100m)
Workflow Kamera WebSite Kamera Stream WebView Kamera Android Raspberry UDP Control (100ms) Wifi
Leistung 8 x 1,5V AA-Batterien (Antriebsmotor) 4 x 1,5V AA-Batterien (Servomotor) 3000 mAh Akku (Raspberry) Antriebsmotor: Betriebsspannung : 1-13V max. Leistung: 9,27W max. Drehmoment: 13,5mNm
Kosten Raspberry Pi (45 EUR) Case (7 EUR) Antriebsmotor (5 EUR) Coppler,IDE-Kabel (10 EUR) Servomotor (10 EUR) WIFI-Stick (8 EUR) Getriebe (10 EUR) Hinterachse (20 EUR) Reifen (2 x 10 EUR) Baumaterial (30 EUR) Steckboard (5 EUR) Pizza-Karton (10 EUR) Akku (20 EUR) sonstiges (50 EUR) SUMME: ~ 250 EUR