diff --git a/README.md b/README.md
index 7db80e4..9395c57 100644
--- a/README.md
+++ b/README.md
@@ -1,24 +1,26 @@
-# README
+# Ectomobile
 
-This README would normally document whatever steps are necessary to get the
-application up and running.
+Colector de datos.
 
-Things you may want to cover:
+## Configuración
 
-* Ruby version
+1. Conseguir la _master key_ desde otrx miembrx del proyecto y colocarla
+   en `config/master.key`.
 
-* System dependencies
+   * Si no sos parte del proyecto, podés borrar el archivo
+     `config/credentials.yml.enc` y recrearlo con:
 
-* Configuration
+     ```bash
+     rm config/credentials.yml.enc
+     make rails args=credentials:edit
+     ```
 
-* Database creation
+     Dentro hay que agregar las variables siguientes con contraseñas de
+     128 caracteres, que se pueden generar con `pwgen -1 128`.
 
-* Database initialization
+     ```yaml
+     secret_key_base: "contraseña de 128 caracteres"
+     devise_pepper: "contraseña de 128 caracteres"
+     ```
 
-* How to run the test suite
-
-* Services (job queues, cache servers, search engines, etc.)
-
-* Deployment instructions
-
-* ...
+2. Adaptar las variables en el archivo `ansible.yml`.
diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
deleted file mode 100644
index bb5c189..0000000
--- a/app/controllers/api_controller.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-# frozen_string_literal: true
-
-class ApiController < ActionController::API
-  # TODO: Habilitar esto de alguna forma.
-  skip_forgery_protection
-
-  rescue_from ActiveRecord::RecordNotFound, with: :bad_request_error
-  rescue_from ActionController::ParameterMissing, with: :bad_request_error
-
-  # @see {https://docutopia.tupale.co/sutty:nodemecu:api}
-  def transactions
-    Transaction.transaction do
-      transaction = raspberry.transactions.build transaction_params
-      transaction.id = params[:transaction_uuid]
-      # TODO: Verificar firma
-      transaction.signature = headers[:'X-Signature']
-
-      params[:arduinos]&.each do |a|
-        arduino = transaction.arduinos.build local_id: a[:id]
-
-        a[:sensores]&.each do |s|
-          arduino.sensors.build(sensor_params s)
-        end
-      end
-
-      if transaction.save
-        render plain: transaction.uuid, status: :ok
-      else
-        head :bad_request
-      end
-    end
-  end
-
-  private
-
-  def bad_request_error
-    head :bad_request
-  end
-
-  def raspberry
-    @raspberry ||= Raspberry.find_or_create_by! params[:controller_id]
-  end
-
-  # Procesa la transacción
-  def transaction_params
-    @transaction_params ||= params.permit(:controller_id,
-                                          :timestamp,
-                                          :error_code,
-                                          :battery_status,
-                                          :sample,
-                                          :signature,
-                                          coordinates: %i[lat lng])
-  end
-
-  # Procesa los parámetros de un sensor
-  def sensor_params(sensor)
-    sensor.permit(:timestamp, :type, :value, :unit, :error)
-  end
-end
diff --git a/app/controllers/readings_controller.rb b/app/controllers/readings_controller.rb
new file mode 100644
index 0000000..bbfe0dd
--- /dev/null
+++ b/app/controllers/readings_controller.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+class ReadingsController < ActionController::API
+  rescue_from ActiveRecord::RecordNotFound, with: :bad_request_error
+  rescue_from ActionController::ParameterMissing, with: :bad_request_error
+
+  # @see {https://docutopia.tupale.co/sutty:nodemecu:api}
+  def create
+    reading = raspberry.readings.build reading_params
+    reading.id = params[:transaction_uuid]
+    # TODO: Verificar firma
+    reading.signature = headers[:'X-Signature']
+
+    params[:arduinos]&.each do |a|
+      arduino = reading.arduinos.build local_id: a[:id]
+
+      a[:sensores]&.each do |s|
+        arduino.sensors.build(sensor_params s)
+      end
+    end
+
+    if reading.save
+      render plain: reading.uuid, status: :ok
+    else
+      head :bad_request
+    end
+  end
+
+  private
+
+  def bad_request_error
+    head :bad_request
+  end
+
+  def raspberry
+    @raspberry ||= Raspberry.find_or_create_by! params[:controller_id]
+  end
+
+  # Procesa la transacción
+  def reading_params
+    @reading_params ||= params.permit(:controller_id,
+                                      :timestamp,
+                                      :error_code,
+                                      :battery_status,
+                                      :sample,
+                                      :signature,
+                                      coordinates: %i[lat lng])
+  end
+
+  # Procesa los parámetros de un sensor
+  def sensor_params(sensor)
+    sensor.permit(:timestamp, :type, :value, :unit, :error)
+  end
+end
+
diff --git a/app/models/arduino.rb b/app/models/arduino.rb
index 98d237c..befda69 100644
--- a/app/models/arduino.rb
+++ b/app/models/arduino.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
-class Transaction < ApplicationRecord
+class Arduino < ApplicationRecord
   belongs_to :raspberry
-  belongs_to :transaction
+  belongs_to :reading
   has_many :sensores
 end
diff --git a/app/models/raspberry.rb b/app/models/raspberry.rb
index 1df8398..56af231 100644
--- a/app/models/raspberry.rb
+++ b/app/models/raspberry.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
 class Raspberry < ApplicationRecord
-  has_many :transactions
+  has_many :readings
   has_many :arduinos
 end
diff --git a/app/models/transaction.rb b/app/models/reading.rb
similarity index 67%
rename from app/models/transaction.rb
rename to app/models/reading.rb
index 4ee88dc..7611809 100644
--- a/app/models/transaction.rb
+++ b/app/models/reading.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Transaction < ApplicationRecord
+class Reading < ApplicationRecord
   belongs_to :raspberry
   has_many :arduinos
 end
diff --git a/config/routes.rb b/config/routes.rb
index 2fa4570..7fd39e1 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,10 +1,9 @@
 Rails.application.routes.draw do
   devise_for :users
+
   root 'application#index'
-  resources :sensors, only: [] do
-    resources :measurements, only: [:create]
-  end
+
   mount Blazer::Engine, at: 'blazer'
 
-  post :transactions, to: 'api#transactions'
+  resources :readings, only: %i[create]
 end
diff --git a/db/migrate/20220303161848_rename_transactions_to_readings.rb b/db/migrate/20220303161848_rename_transactions_to_readings.rb
new file mode 100644
index 0000000..27f6af2
--- /dev/null
+++ b/db/migrate/20220303161848_rename_transactions_to_readings.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class RenameTransactionsToReadings < ActiveRecord::Migration[6.1]
+  def change
+    rename_table :transactions, :readings
+    rename_column :arduinos, :transaction_id, :reading_id
+  end
+end