Apps Script untuk Google Sheet

function doGet(e) {
  var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
  var params = e.parameter;
  var row = [];
  for (var i = 1; i <= 16; i++) {
    var val = params["ch" + i];
    row.push(val || 0);
  }
  // Tambahkan timestamp
  row.unshift(new Date());
  sheet.appendRow(row);
  return ContentService.createTextOutput("OK");
}