app/serializers/telemetry_serializer.rb
class TelemetrySerializer < ApplicationSerializer
attributes :soc_temp,
:throttled,
:wifi_level_percent,
:uptime,
:memory_usage,
:disk_usage,
:cpu_usage,
:target,
:fbos_version,
:firmware_hardware
def created_at
object.created_at.to_time.to_i
end
end