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These are (work in progress) build notes for donkeycar platform using VRX Racing Coyote EBD 1:10 as base. See also http://diyrobocars.com/ and http://docs.donkeycar.com/

TODO

• order components
• make base for components (plywood)
• assemble components

laptop

• install donkeycar on laptop

rpi3

• install raspbian on rpi3 (http://docs.donkeycar.com/guide/robot_sbc/setup_raspberry_pi/)
• update raspbian
• configure raspbian
• install donkeycar
• create donkeycar setup

Use

• calibration
• ML model training
• race!

BOM (2020)

component	cost
VRX Racing Coyote EBD (RTR)	162 €
Raspberry Pi 3+	42 €
Raspberry Pi Wide Angle Camera	39 €
SD Card 16GB	10 €
Servo Driver PCA9586	11 €
Step-down USB DC-DC converter with LCD this or this	12 €
Total	276 €

Some EU RC Car shops

• Photopoint
• EuroRC
• VRX Racing Italy
• Gear7

RPi3+

• Electronics diagram

Wiring

• 3V3 - red

• SDA - yellow

• SDC - green

• GND - black

PCA9586

• channel 0: ESC/BEC
• channel 1: steering servo

Software

Default donkeycar image does not work with Raspberry Pi 3+ (only with RPi3). See here for a link to RPi3+ compatible image and possible issues and solutions.

RPi3+ image is missing d2 directory with car definition, run this before calibration in rpi:

donkey createcar --template donkey2 ~/d2

Calibration

• fwd speed 390 (max 400)

• rwd speed 360 (max 330)

• max right 310 (340?)

• max left 460