1) Download
RemoDroid and install on your HD 8 and or 7
2) Install RemoDroid on a device that has ability to screen mirror, but no software to do so (Like the HD 8 or 7)
3) Make sure both devices are on the same WiFi network. Start the app on both devices. If rooted, grant the app root access. On the HD 8 and 7, ignore the no root warnings.
4) On the HD 8 or 7, tap 'stream', ignoring the warnings.
5) On your other device, tap connect. In a few seconds your HD 8 should appear on the list. Tap it. Your HD 8 or 7 screen is now being mirrored to your device
6) On that device, tap the back button and tap ok to stop the connection. On the HD 8 or 7, stop streaming.
7) On your other device, tap 'stream'
8) On the HD 8 or 7 tap 'connect' and select your other device from the list. You are now mirroring to your HD 8 or 7.