dannyvandenheuvelI found a potentionmeter for the price of 7€ with a moving body to initialize it. I'm gone order this to try to make a cheap feedback system for our steppers
Potentiometer (2-pack)
P/N: 276-2216
With the Potentiometer you can determine both position and direction of rotation. Use this sensor to get an analog measurement of angular position. This measurement can help to understand the position of robot arms or other mechanisms. A Programming Kit is needed to change the program in the VEX Controller to use the Potentiometer.
- Measure Angular Position
- 250-Degrees of Adjustment
- Adjustable mounting angle
€13.99
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I'm also going to make a little pcb board into the chamber where the three geared motors are with one connector to feed the 6 stepper motors, then I only have to remove or connect one connector to the base unit. I need 2 wires for the supply and 12 wires for the 6 stepper motors and 4 wires for my mini arduino. on the pcb will be the normal 4 pin connectors for the motors. So I have to search at a decent connector or maybe two to house the 18 pins. 2 of them will be strong enough to hold the power of the 6 steppers. (6x400mA > will be 2.4 Amp) The chamber will be provided with a cooling fan. So this piece I need to redrawn and I have to printed it again ;-(
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Because the wiring bores me I'm going to use a arduino mini to get all 5 analog potentionmeters togetter and softserial communicate it to my ultratronics board, I'll take also the gripper servo motor and neopixel light at that mini board so that I have just 4 wires RX,TX,5V,ground to the main controller.
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The sixth (base) analog signal will be connected directly to the main board.
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