How do I append first 20 characters of a string to a string?

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That lets you send longer messages.

FAQ Section: BlueTooth/BLE

BLE Releases BluetoothLE extension 20240822 Java 11 UUID bugfix - @ewpatton BluetoothLE extension 20240322-beta bugfix - ewpatton BluetoothLE extension 20230728 released - ewpatton BluetoothLE extension 20201223 released - ewpatton BluetoothLE extension 20200828 released - ewpatton BluetoothLE extension 20190701 released - EWPatton BLE Problems java.lang.RuntimeException: no such class: edu.mit.appinventor.ble.BluetoothLE Build Error - Anke How to clean out residual BLE extension part…

Clarity Issue w/ Lopping BT Serial

Here is an alternative approach to logging recent variable text, by line: [global logLengthLimit] log_last_five.aia (2.4 KB) [when btnLog Click] [Designer] It shows the last 5 lines, newest at the bottom. If you like newest at the top, reverse the JOIN input order.