Pressto IoT Button Pressto IoT Button from Grant Riley Pressto IoT Button A GSM-based connected button for the Internet of Things. View Website Initial concepts... Final concept. Final concept. System architecture diagram. PCB layout. First PCB prototype. Final PCB prototype. Final PCB prototype. Design for assembly. Design for injection moulding. SLS prototypes. CNC milled prototypes. PU vac-cast prototypes. Injection mould tool design. Injection mould tool. Test rig design Test rig prototype. Packaging design. Disassembly process. gLike Pressto IoT Button A GSM-based connected button for the Internet of Things. View Website Engineering Share R 7 n Grant Riley Founder of Think Refine Salisbury, United Kingdom Follow Contact