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I have designed a touchpad product and would like to begin the next phase of development: Ordering components, putting them together, testing them, refining design, etc. THE FUN STUFF! I am very new to PSoC design and electrical engineering in general, but I understand how mutual capacitance/CSX works on a theoretically level with Rx/Tx electrodes, hatched ground plane, etc.
The requirements for this trackpad is that it can:
1. Sense multiple touch points
2. Send the data wirelessly to a computer.
3. Latency-free (not noticeable/under 5-10ms)
What I need to know to confidently move on is what family of PSoC should I be looking into (because they all have capsense), and how do I choose the correct MCU to start with? Is this decision based off the amount of electrodes that need to be sensed, and the number of I/O pins? There just doesn't seem to be much information or examples for trackpad design within PSoC Creator/PSoC Designer.
Any help pointing me in the right direction would be greatly appreciated!
Solved! Go to Solution.
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Hi jojo_4453281,
Thank you for your interest in Cypress products.
We recommend you to use PSoC 63 BLE family products (4th generation CapSense) that supports both CapSense and BLE in a single chip. Or else you can also go with PSoC 4200 BLE products (3rd generation CapSense).
The PSoC 4S series - 4000S , 4100S and 4100 S Plus (4th gen CapSense) can also be used. But since your application needs a wireless transmission, you can interface it with the PSoC based BLE modules that Cypress provides.
PSoC 4 Trackpad examples:
https://www.cypress.com/documentation/code-examples/ce224821-psoc-4-capsense-touchpad-gestures
Trackpad Schematic / Layout: Refer to the design files of the flex PCB
https://www.cypress.com/documentation/development-kitsboards/cy8ckit-041-psoc-4-s-series-pioneer-kit
Regards,
Bragadeesh
Bragadeesh
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Hi jojo_4453281,
Thank you for your interest in Cypress products.
We recommend you to use PSoC 63 BLE family products (4th generation CapSense) that supports both CapSense and BLE in a single chip. Or else you can also go with PSoC 4200 BLE products (3rd generation CapSense).
The PSoC 4S series - 4000S , 4100S and 4100 S Plus (4th gen CapSense) can also be used. But since your application needs a wireless transmission, you can interface it with the PSoC based BLE modules that Cypress provides.
PSoC 4 Trackpad examples:
https://www.cypress.com/documentation/code-examples/ce224821-psoc-4-capsense-touchpad-gestures
Trackpad Schematic / Layout: Refer to the design files of the flex PCB
https://www.cypress.com/documentation/development-kitsboards/cy8ckit-041-psoc-4-s-series-pioneer-kit
Regards,
Bragadeesh
Bragadeesh