To make a pen that can write on a tablet, consider the following steps:
1. Design a lightweight pen body that makes it easy to hold and manipulate.
2. Install a conductive head of a touch-screen compatible material in the nib part to achieve interaction with the tablet.
3. Add a button or switch to turn on or off the conductive function of the pen tip.
4. Integrate Bluetooth or other wireless communication technology, so that the pen can be connected to the tablet device.
5. The software algorithm can accurately capture and display handwriting to ensure the fluency and accuracy of writing on the tablet.
6. Consider adding rechargeable batteries or battery modules to provide a power supply.
7. Finally, test and adjust to ensure that the pen's performance and user experience meet expectations.