total_nb_channels = 32
radius            = 100

channel_groups = {
    1: {
        'channels': list(range(32)),
        'graph' : [],
        'geometry': {
		17: (20, 275),
		14: (20, 250),
		16: (20, 225),
		15: (20, 200),
		21: (20, 175),
		10: (20, 150),
		20: (20, 125),
		11: (20, 100),
		30: (20, 75),
		1: (20, 50),
		28: (20, 25),
		8: (20, 0),
		0: (0, 237),
		9: (0, 212),
		3: (0, 187),
		6: (0, 162),
		2: (0, 137),
		7: (0, 112),
		12: (0, 87),
		4: (0, 62),
		5: (0, 37),
		13: (0, 12),
		31: (40, 237),
		19: (40, 212),
		29: (40, 187),
		18: (40, 162),
		26: (40, 137),
		24: (40, 112),
		27: (40, 87),
		22: (40, 62),
		25: (40, 37),
		23: (40, 12),