anchor.diff:      <div class="col-sm-4">
         <div class="form-group">
           <%= f.label :pump_power_pin, "Pump Power Pin" %>
  -        <% pump_power_pin_options = Array(1..26).map{ |x| [x.to_s, x] } %>
  +        <% pump_power_pin_options = [4, 17, 18, 22, 23, 24, 25, 27] %>
           <%= f.select :pump_power_pin,
                        pump_power_pin_options,
                        class: "form-control" %>
  
positive.code:     <div class="col-sm-4">
        <div class="form-group">
          <%= f.label :signal_power_pin, "Signal Power Pin" %>
          <% signal_power_pin_options = Array(1..26).map{ |x| [x.to_s, x] } %>
          <%= f.select :signal_power_pin,
                       signal_power_pin_options,
                       class: "form-control" %>
  
negative.code:     <div class="col-sm-4">
        <div class="form-group">
          <%= f.label :moisture_threshold, "Moisture Threshold" %>
          <%= f.range_field :moisture_threshold, min: 0, max: 100, step: 5 %>
        </div>
      </div>
    </div>
  