SM130 problems

Bit of a noob here having trouble getting SM130 RFID to work.

Using direct wiring (http://www.avdm.nl/image/arduino_sm130_scheme.png) rather than using a shield.

Using code from https://sm130no.codeplex.com/ (and have tried other code as well) utilizing SoftwareSerial on UNO and debugging via UART/USB in IDE.

Haven’t even hooked up an antenna yet since I’m just trying to establish comm with SM130 at this point. I believe it should spit out its firmware version on reset, but it doesn’t do anything because RFID.available() never returns true.

Does anyone see an obvious problem here?

Does anyone see an obvious problem here?

You don't seem to have connected pin 27 Rfgnd to ground.