Tamiya 70193 Tire Slim Set 4pcs - 4-Wheel Slim Heat Shrink Tube 2mm 2M Keep the classic 40-pin GPIO

Keep the classic 40-pin GPIO for sensors

AT command control: Standard GSM07

8 Channels

They are volt-free relay outputs

Since we wanted to add R3/Leonardo/stacking support

Tamiya 70193 Tire Slim Set 4pcs - 4-Wheel Slim Heat Shrink Tube 2mm 2M Keep the classic 40-pin GPIOThe Tamiya slim tire set contains two wheels with a diameter of 36 mm (1. 4") and two wheels with a diameter of 55 mm (2. 2"). These have a width of 3. 5 mm (0. 14") and are compatible with all Tamiya gearbox kits. DIMENSIONS: Size: 36 x 3. 5 mm and 55 x 3. 5 mm The Tamiya 70193 slim tire set includes the following: Two tires: 36 mm diameter, 3. 5 mm wide Two tires: 55 mm diameter, 3. 5 mm wide Four wheels (two for each tire size) compatible with