Hardware Revisions
| Device | Revision | Firmware Code | Features | Remarks |
|---|---|---|---|---|
| ODRFID | nil | F | 13.56MHz | Supports Mifare tags, LED/Buzzer indication |
| -M | m | 13.56MHz / 125kHz | Supports Mifare tags (Mifare Plus is supported only in Classic-compatibility mode), Em-Marine (read), T5577 (write), Buzzer indication | |
| -N | n | 13.56MHz | Supports Mifare tags (full Mifare Plus support), Buzzer indication | |
| -E | e | 125kHz | Em-Marine (read), T5577 (write), Buzzer indication | |
| ODRFID (2021) | -M | m | 13.56MHz / 125kHz | Supports Mifare tags, Em-Marine (read), T5577 (write), LED/Buzzer indication |
| -N | n | 13.56MHz | Supports Mifare tags, LED/Buzzer indication | |
| -E | e | 125kHz | Em-Marine (read), T5577 (write), LED/Buzzer indication |
Firmwares. Please read carefully
- All the revisions of the ODRFID device have the 'CDC' variant, and the 'HID' variant. Generally you can change the CDC/HID variant by upgrading the firmware (even if the firmware version is the same). However, the -M, -E, and -N revisions cannnot be simply "reflashed" from one to another. Please verify that you are flashing a compatible firmware during the upgrade process. Flashing -M device with -E firmware and so on will brick your device. In this case you will have to send the device to an authorized service center for restoration.
- The -M and the -E revisions are able to read the EM41xx compatible 125kHz tags with Manchester and BiPhase coding and 32 or 64 transitions per bit. EM4100 specification states that the "middle-bit transition is zero" variant of the BiPhase coding is used. The device will report read success on both variants (i.e. "middle-bit transition is zero" and "middle-bit transition is one").
- The 3rd generations (2021) -M/-N/-E devices have a dual CDC/HID interface (no firmware reflashing is needed).
Documentation Revisions
| Revision | Date | Remarks |
|---|---|---|
| 1.0 | 2018-01-22 | Initial Version |
| 1.1 | 2018-04-27 | Protocol update Support UID / Block selection in scan mode |
| 1.2 | 2019-04-07 | Add RS485 modification |
| 1.3 | 2019-08-20 | Add new features supported by the v1.6 firmware |
| 1.4 | 2019-10-29 | Add new auxiliary device: RS485-IO |
| 1.5 | 2020-01-27 | Support for the 125kHz-enabled devices |
| 1.6 | 2020-12-08 | MODBUS firmware v2.1 description |
| 1.7 | 2021-03-16 | fixed HID 125kHz related commands |
| 1.8 | 2021-08-26 | protocol update for the 3rd generation devices |
| 1.9 | 2022-01-11 | Errata. Russian translation |