RKMIX - RummyKub Mixer

RKMIX automatically mixes a set of RummyKub pieces and spits them all out on the table lying face-down.

RKMIX has 3 components:

• mixing drum
• colorSensor
• switch and turn-around mechanism

mixing drum

The mixing drum is driven by a pair of stepper motors Schrittmotor MOONS 1454HS5405-01N - NEMA 14 B - 1,8Grad.

• If the motors turn in the SAME direction, the drum is rotating and therefore MIXING the pieces in it.
• If the motors turn in the OPPOSITE direction, the drum carriage will be TILTED in order to empty it into the sorting Chute.

mix drum motor drive

pre-test with IBT-2 H-bridge drivers

2 IBT-2 BTS7960B Driver Modules per motor (Schrittmotor MOONS 1454HS5405-01N - NEMA 14 B - 1,8Grad).

motor has 2 coils:

• A-C coil
• B-D coil

Thus, 4 wires:

Wire	Wire color	Connector pin number
D	BLUE	1
B	RED	2
C	GREEN	3
A	BLACK	4

• board A drives A-C coil
• board B drives B-D coil

Connection from driver boards to motors:

board	board pin name	motor pin	motor wire color
A	M+	A	BLACK
A	M-	C	GREEN
B	M+	B	RED
B	M-	D	BLUE

4 RasPi GPIO ports to control the IBT-2 BTS7960B Driver Module:

GPIO-Number	GPIO-Connector-Pin-Number	Used for	connected to at driver board pin number	driver board pin name
5
6
13
19
12
16
20
21

(zu ergänzen)

color sensor

(zu ergänzen)

calibration

• RKMIX color sensor calibration

switch and turn-around mechanism

(zu ergänzen)

Software

Base Material:

• EdjeElectronics Playing Card Detecor:
  • Github page
  • Youtube Video demonstrating the card detector

Variant A: Detect Face with OpenCV

This uses a Raspberry Pi Model B Version 3, running OpenCV.

Setting up the Rapberry Pi with OpenCV

• http://www.life2coding.com/install-opencv-3-4-0-python-3-raspberry-pi-3/