I am working on RFID based system with ATmega8A. I met a problem. I cant receive read data. My circuit schema is below (Figure 1). And I connected TX to RX, SEL to +5V, GND to GND, VCC to +5V for EM-18 module. Also, EM-18 pinout is below (Figure 2). EM-18 working with UART communication. I'm sure I assigned the appropriate registers correctly (UCSRs, UBBR and etc.).
because i can get data with PL-2303 USB-TTL converter. Can you help me?
Figure 1. Circuit Schema
Figure 2. EM-18 RFID Reader Module Pinout