Button Grid Expansion


I’ll inspect the current shield template, look up the ADS1259 wiring requirements, then plan the Arduino connections and two LEDs. If this template is still read-only, I’ll give you the exact fork/edit path and wiring plan instead of making unsafe partial changes.
I found the ADS1259BIPW in the library and verified the key datasheet pins: SPI pins, DRDY, START, RESET/PWDN, AVDD/DVDD, reference pins, and required bypass/reference handling. The current project is a read-only template, so I’m preparing the exact implementation plan rather than making partial edits that cannot be saved.
I’m blocked from editing this project because your access is view-only on the Arduino Uno R3 Shield Template.
Planned implementation for an editable fork:
  • Add 2× ADS1259BIPW ADCs.
  • Power: ADS1259 DVDD to Arduino 3.3V or 5V, analog supply per chosen input range, with required decoupling/bypass/reference capacitors.
  • Shared Arduino SPI: D13/SCLK, D11/MOSI→DIN, D12/MISO←DOUT.
  • Separate chip selects: D10 → ADC1 CS, D9 → ADC2 CS.
  • Data-ready lines: D2 → ADC1 DRDY, D3 → ADC2 DRDY.
  • Control: shared START and RESET/PWDN on spare digital pins.
  • Add 2 LEDs with series resistors on spare GPIOs, e.g. D6 and D7.
Fork or duplicate the template into a project you can edit, then I can add and wire the parts directly.
Add after fork
Use 3.3V DVDD
Check ADS1259 datasheet
Add LED resistors
Duplicate template help

J2
J4
Arduino Uno R3 PINOUT
Outline
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J1

Arduino Uno R3 Shield Template

Arduino Uno R3 Shield Template thumbnail