Hi as I create the list, I cannot fit the variable in second slot Error 514 Could not fit element 2 into 1 byte how can I get the lowest byte of an integer or define the variable as byte ? thanks [image]

[image] phil123456789: l if app inventor does not allow me to turn a slider value to an hex byte It allows it, you are looking in the wrong place. AI2 Duck Typing gives you automatic conversion. [math_bitwise] The BlueTooth send Bytes List block takes decimal numbers below 256 and renders…