Have you tried using the IDE's throttle send option? I've never ever had problems sending code to Espruino with that checked (without it, I've had intermittent problems)
v80 and the current github builds should have USB HID, albeit in a really basic form.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Have you tried using the IDE's throttle send option? I've never ever had problems sending code to Espruino with that checked (without it, I've had intermittent problems)
v80 and the current github builds should have USB HID, albeit in a really basic form.