diff --git a/Mesures/humidity/solar-grafana/0_htu21d.lua b/Mesures/humidity/solar-grafana/0_1_htu21d.lua
similarity index 95%
rename from Mesures/humidity/solar-grafana/0_htu21d.lua
rename to Mesures/humidity/solar-grafana/0_1_htu21d.lua
index 4eff8ae..1a9e425 100644
--- a/Mesures/humidity/solar-grafana/0_htu21d.lua
+++ b/Mesures/humidity/solar-grafana/0_1_htu21d.lua
@@ -2,12 +2,12 @@
 -- https://github.com/zuzu59/NodeMCU_Lua/tree/master/Mesures/humidity/bolo-thingspeak/docu/HTU21D.txt
 
 function readHTU21D()
-    if verbose then print("\n 0_htu21d.lua   zf200119.1517 \n") end
+    if verbose then print("\n 0_1_htu21d.lua   zf200521.1404 \n") end
     
     id = 0   sda = 5   scl = 6   addr = 0x40
     HUMIDITY = 0xE5   TEMPERATURE = 0xE3
     i2c.setup(id, sda, scl, i2c.SLOW)   sda = nil   scl = nil
-
+    
     function read_HTU21D(zreg, zdelay)
         i2c.start(id)   i2c.address(id, addr, i2c.TRANSMITTER)
         i2c.write(id, zreg)   i2c.stop(id)
diff --git a/Mesures/humidity/solar-grafana/0_2_htu21d.lua b/Mesures/humidity/solar-grafana/0_2_htu21d.lua
new file mode 100644
index 0000000..47c3743
--- /dev/null
+++ b/Mesures/humidity/solar-grafana/0_2_htu21d.lua
@@ -0,0 +1,43 @@
+-- Lit le capteur I2C HTU21D de mesure d'humidité et de température
+-- https://github.com/zuzu59/NodeMCU_Lua/tree/master/Mesures/humidity/bolo-thingspeak/docu/HTU21D.txt
+
+function readHTU21D()
+    if verbose then print("\n 0_2_htu21d.lua   zf200521.1347 \n") end
+    
+    id = 0   sda = 4   scl = 6   addr = 0x40
+    HUMIDITY = 0xE5   TEMPERATURE = 0xE3
+    i2c.setup(id, sda, scl, i2c.SLOW)   sda = nil   scl = nil
+
+    function read_HTU21D(zreg, zdelay)
+        i2c.start(id)   i2c.address(id, addr, i2c.TRANSMITTER)
+        i2c.write(id, zreg)   i2c.stop(id)
+        i2c.start(id)   i2c.address(id, addr, i2c.RECEIVER)
+        tmr.delay(zdelay)
+        r = i2c.read(id,3)   i2c.stop(id)
+        return r
+    end
+
+    function readTemp()
+        r = read_HTU21D(TEMPERATURE, 50000)
+        r = (bit.band((bit.lshift(string.byte(r,1),8)+string.byte(r,2)),0xfffc)*17572)/65536-4685
+        return tonumber(string.format("%.1f", tostring(r/100)))
+    end
+
+    function readHumi()
+        r = read_HTU21D(HUMIDITY, 16000)
+        r = (bit.band((bit.lshift(string.byte(r,1),8)+string.byte(r,2)),0xfffc)*12500)/65536-600
+        return tonumber(string.format("%.1f", tostring(r/100)))
+    end
+
+    ztemp1=readTemp()   zhum1=readHumi()
+    if verbose then print("Temperature: "..ztemp1.." °C") end
+    if verbose then print("Humidity: "..zhum1.." %") end
+
+    id=nil sda=nil scl=nil addr=nil HUMIDITY=nil TEMPERATURE=nil r=nil
+    read_HTU21D=nil readTemp=nil readHumi=nil readHTU21D=nil
+    if verbose then print(node.heap()) end
+    collectgarbage()
+    if verbose then print(node.heap()) end
+end
+
+readHTU21D()
diff --git a/Mesures/humidity/solar-grafana/boot.lua b/Mesures/humidity/solar-grafana/boot.lua
index a58b4b0..edfe2aa 100644
--- a/Mesures/humidity/solar-grafana/boot.lua
+++ b/Mesures/humidity/solar-grafana/boot.lua
@@ -1,6 +1,6 @@
 -- Scripts à charger après le boot pour démarrer son projet
 
-print("\n boot.lua zf200303.1409 \n")
+print("\n boot.lua zf200521.1339 \n")
 
 function boot()
     verbose = true
@@ -10,11 +10,11 @@ function boot()
     --f="0_htu21d.lua"   if file.exists(f) then dofile(f) end
     --zurl=thingspeak_url.."field1="..tostring(ztemp1).."&field2="..tostring(zhum1)
     --f="0_send_data.lua"   if file.exists(f) then dofile(f) end
-    f="0_btn_flipflop.lua"   if file.exists(f) then dofile(f) end
+    --f="0_btn_flipflop.lua"   if file.exists(f) then dofile(f) end
     
-    f = "0_zdyndns.lua"   if file.exists(f) then dofile(f) end
-    f="0_cron.lua"   if file.exists(f) then dofile(f) end
-    f="0_tst3_socat.lua"   if file.exists(f) then dofile(f) end
+    --f = "0_zdyndns.lua"   if file.exists(f) then dofile(f) end
+    --f="0_cron.lua"   if file.exists(f) then dofile(f) end
+    --f="0_tst3_socat.lua"   if file.exists(f) then dofile(f) end
 
     --f = "web_ide2.lua"   if file.exists(f) then dofile(f) end
     print("verbose:",verbose)
diff --git a/Mesures/humidity/solar-grafana/0_tst_maxime.lua b/Mesures/humidity/solar-grafana/oldies/0_tst_maxime.lua
similarity index 100%
rename from Mesures/humidity/solar-grafana/0_tst_maxime.lua
rename to Mesures/humidity/solar-grafana/oldies/0_tst_maxime.lua