I have created a controller for N gauge model trains using a 7-inch tablet PC. This is a set including a used tablet PC and a circuit board. The dedicated app displays a speedometer, voltmeter, ammeter, etc. You can also operate it with a Densha de GO controller. Features: ・Meter types: 6 speedometers, 6 voltmeters/ammeters ・Handles: 4 types - screen slider, circuit board knob, Densha de GO controller TCPP-20001/SLPH-00051, Densha de GO One-handle controller ZKNS-001/-002/-011/-012/-013 ・Adjustable acceleration/deceleration for notch control ・100km/h scale speed and 0km/h constant lighting settings ・Variable PWM frequency for a "Doremi Fa Inverter" sound ・7 user memories ・Portable operation with the tablet PC ・Operation possible with just the circuit board and Densha de GO controller ・Circuit board with acrylic panel Contents: Used HUAWEI S7-701, circuit board, knob, AC adapter 12V1A, connection cables for KATO and TOMIX, manual ・The tablet PC has the dedicated app installed and may have scratches or stains on the screen. Only the main unit is included, so please prepare a commercially available charger and a Type-B charging cable. ・Densha de GO controller, charger, charging cable, and stand are not included. ・Manual https://www.dropbox.com/scl/fi/3rmxyzxb629z0abbwz7o4/TPPC1Amanual.pdf?rlkey=ln9rfthtix6tb5cgh1ggd0erh&dl=0 ・Introduction video https://www.dropbox.com/scl/fi/kpyyoj3g70vizptifxd3c/TPPC1Amovie.mp4?rlkey=tg7ba5zk1qr8uhloj8k5c9y0s&dl=0 Other: ・DCC, capacitor-equipped vehicles, and overseas vehicles cannot be operated. ・If there is insufficient current, please prepare a 12V2A AC adapter. ・The speed may vary even with the same speed display depending on the motor load, such as on inclines. ・The tablet PC runs Android 4. ・The dedicated app will be deleted if you reset the tablet PC, so please do not reset it. It is not available on the Play Store. ・The Bluetooth module does not have a technical compliance mark, so please use it for personal experimentation only.