I am not a technical person so please bare with me and don't laugh of my technical descriptions or wording. I'm working on a new invention that requires a sensor to identify the number and position of casino chips placed on a table layout. Putting RFID and BLE on the side, I was thinking of having conductor chips with very small resistors inside them and very low power generators on the table layout. when the chips are placed on the layout they would touch the power generator that is connected to a power supply (it could be a battery or another power supply). let's say that the dissipated current from the power generator runs through the chips and returns to an electricity sensor and to know the number of chips, we have to measure the lost power after returning the sensor. Example when 1 chip is placed on the power generator and the power generated from it is equal to 10 units and the chip resistor consumes 1 unit, then the returning power would be 9. The sensor would report 9 to the computer software and the system will identify that there is 1 chip touching this particular sensor, if 2 chips then the sensor returns 8 if 3 chips then the sensor returns 7... (this is just an example) I would like to know if this is feasible or if there is another way to identifying the position and number of chips on a roulette layout. Many thanks for your help

  • \$\begingroup\$ This question is too broad for EE.SE. That being said, your proposed solution is going to be unreliable. Smudge affects resistance. Go digital or go bust. \$\endgroup\$ – Dampmaskin Apr 25 '18 at 12:13
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    \$\begingroup\$ Seems more like a machine vision application to me. \$\endgroup\$ – brhans Apr 25 '18 at 12:18
  • \$\begingroup\$ You could try going with capacitance, and a frequency shifting. \$\endgroup\$ – loonquawl Apr 25 '18 at 12:43

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