Using the device as a remote keyboard

[RLSUK]

Hi, I hope you can help me with this. I have got the USB device working and its currently connected to my local WiFi and I am able to browse the unit from a web browser. My aim for this device is to use it as a remote keyboard to send keystrokes from one PC to another PC via a a custom windows application on the remote PC.

Apart from the HTML webpage that requires me to physically type things into the form, is there a way I can perform keystrokes from an application that I develop? Is there a webservice or something that my program can connect to and initiate keyboard commands?

Thank you for any help you can offer.

[whid-injector]

It's not difficult, it was already implemented an app for Android, to remotely control WHID.
https://github.com/whid-injector/WHID-Mobile-Connector
https://play.google.com/store/apps/details?id=whid.usb.injector&hl=it

Look at the ESP sketch https://github.com/exploitagency/ESPloitV2/blob/master/source/ESP_Code/ESP_Code.ino and intercept real requests with Burp or ZAP to see which POST and GET requests are used.