Brake controller for spinner bike

A brake controller for spinner bikes comprising:

• a frame body formed by a first board, a second board, and a plurality of support rods engaged between the first and second boards, said first and second boards each having a spindle hole, a positioning hole, and a first fillister space correspondingly arranged;
• a pair of connecting pieces, each having a pivot hole, an engaging hole, and a second fillister space, said connecting pieces being connected by a connecting rod and engaging a pivot rod by the pivot holes to further engage the spindle holes of the frame body to be fixed thereto;
• a first block having a first through hole and two first fixing sections that arranged correspondingly aside for engagement with the positioning holes of the frame body;
• a shaft with an annular protrusion to engage through the first through hole of the first block and place the first block on the annular protrusion, said shaft then engaging a spring element on the first block and then a button on the spring element at a top end thereof;
• a second block with a second through hole to be engaged through at a bottom end of the shaft to be placed under the annular protrusion and two second fixing sections each arranged aside for engagement with the first fillister spaces of the connecting pieces;
• and
• a magnetic encoder including a magnet disposed under the bottom end of the shaft and a PCB with coding circuit disposed under the second block for inspecting rotation angle of the magnet.