diff --git a/config.toml b/config.toml
index a4bd0aa..85b4799 100644
--- a/config.toml
+++ b/config.toml
@@ -2,7 +2,7 @@
 [TH7]
 port = 9090                     # web port
 debug = true                    # enable to use simulated PCB for development
-nolog = true
+nolog = false
 
 # all DB settings are individual to each DB
 [DB]
diff --git a/db/sqlite3.go b/db/sqlite3.go
index 995c086..6a12c6c 100644
--- a/db/sqlite3.go
+++ b/db/sqlite3.go
@@ -4,8 +4,10 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"log"
 	"sync"
 	"th7/data/core"
+	"time"
 
 	_ "github.com/mattn/go-sqlite3"
 )
@@ -36,8 +38,6 @@ func NewSQLite3Adapter(dbInfo map[string]interface{}) (*SQLite3Adapter, error) {
 	const create string = `
 	CREATE TABLE IF NOT EXISTS logs (
 		id     INTEGER NOT NULL,
-		type      TEXT NOT NULL,
-		unit      TEXT NOT NULL,
 		value     REAL NOT NULL,
 		timestamp TEXT NOT NULL
 	);`
@@ -53,10 +53,27 @@ func (ad *SQLite3Adapter) Close() {
 	ad.db.Close()
 }
 
-func (ad *SQLite3Adapter) Save([]core.Channel) error {
+func (ad *SQLite3Adapter) Save(channels []core.Channel) error {
 	ad.mu.Lock()
 	defer ad.mu.Unlock()
 
-	fmt.Println("TODO save data...")
+	insertLogSQL := `INSERT INTO logs (id, value, timestamp) VALUES (?, ?, ?)`
+	statement, err := ad.db.Prepare(insertLogSQL)
+	if err != nil {
+		log.Fatalln(err.Error())
+	}
+
+
+	timestamp := time.Now().Format(time.RFC1123)
+
+	for c := range channels {
+		
+		_, err = statement.Exec(channels[c].Id, channels[c].Value, timestamp)
+		if err != nil {
+			log.Fatalln(err.Error())
+		}
+		fmt.Printf("[%s] INSERTED id=%d value=%f\n", timestamp, channels[c].Id, channels[c].Value)
+	}
+
 	return nil
 }