# tsl2561 Module
##Require
```lua
tsl2561 = require("tsl2561")
```
## Release
```lua
tsl2561 = nil
package.loaded["tsl2561"]=nil
```
##init()
####Description
Setting the I2C pin of tsl2561.
####Syntax
init(sda, scl)
####Parameters
sda: 1~12, IO index.
scl: 1~12, IO index.
####Returns
nil
####Example
```lua
SDA_PIN = 6 -- sda pin, GPIO12
SCL_PIN = 5 -- scl pin, GPIO14
tsl2561 = require("tsl2561")
tsl2561.init(SDA_PIN, SCL_PIN)
-- release module
tsl2561 = nil
package.loaded["tsl2561"]=nil
```
####See also
**-** []()
##readVisibleLux()
####Description
Get the Lux reading of visible light
####Syntax
readVisibleLux()
####Parameters
nil.
####Returns
nil.
####Example
```lua
SDA_PIN = 6 -- sda pin, GPIO12
SCL_PIN = 5 -- scl pin, GPIO14
tsl2561 = require("tsl2561")
tsl2561.init(SDA_PIN, SCL_PIN)
lux = tsl2561.readVisibleLux()
-- release module
tsl2561 = nil
package.loaded["tsl2561"]=nil
```
####See also
**-** []()