FW Update
To upgrade FW, you will need a USB/TTL level converter.
To upgrade FW, you will need a USB/TTL level converter.
You can use any Arduino board with a USB connector.
You can use any Arduino board with a USB connector.
In addition, you will need 4 wires to connect the Arduino and the PROG connector on the tuner board
In addition, you will need 4 wires to connect the Arduino and the PROG connector on the tuner board
(Male/Female for Arduino Uno and MEGA or Female/Female for Arduino Nano)
(Male/Female for Arduino Uno and MEGA or Female/Female for Arduino Nano)
and one jumper.
and one jumper.
1. Download the latest mchf_at.aes firmware here (v1.01 Aug 30, 2019)
1. Download the latest mchf_at.aes firmware here (v1.01 Aug 30, 2019)
Download update.exe utility here
Download update.exe utility here
2. Put the update.exe utility and the mchf_at.aes firmware in one folder.
2. Put the update.exe utility and the mchf_at.aes firmware in one folder.
3. Connect the RST pin to the GND pin on the Arduino board.
3. Connect the RST pin to the GND pin on the Arduino board.
4. Install a jumper on the tuner's BOOT connector.
4. Install a jumper on the tuner's BOOT connector.
5. Connect the TX pin of the PROG connector on the autotuner board to the TX pin on the Arduino board.
5. Connect the TX pin of the PROG connector on the autotuner board to the TX pin on the Arduino board.
6. Connect the RX pin of the PROG connector on the autotuner board to the RX pin on the Arduino board.
6. Connect the RX pin of the PROG connector on the autotuner board to the RX pin on the Arduino board.
7. Connect the pin +5V of the PROG connector on the tuner autotuner to the 5V pin on the Arduino board.
7. Connect the pin +5V of the PROG connector on the tuner autotuner to the 5V pin on the Arduino board.
8. Connect the GND pin of the PROG connector on the tuner autotuner to the GND pin on the Arduino board.
8. Connect the GND pin of the PROG connector on the tuner autotuner to the GND pin on the Arduino board.
9. Connect the Arduino USB cable to the computer.
9. Connect the Arduino USB cable to the computer.
10. The BOOT LED D3 on the autotuner board will light RED.
10. The BOOT LED D3 on the autotuner board will light RED.
11. Identify the COM port on which the Arduino appeared (for example, COM1).
11. Identify the COM port on which the Arduino appeared (for example, COM1).
12. From the command line, run the update utility with the following parameters:
12. From the command line, run the update utility with the following parameters:
update mchf_at.aes -COM1 -19200
update mchf_at.aes -COM1 -19200
13. Wait while process been finished.
13. Wait while process been finished.
14. Disconnect the Arduino USB cable from the computer.
14. Disconnect the Arduino USB cable from the computer.
15. Disconnect all wires from the PROG connector and remove the jumper on the BOOT connector.
15. Disconnect all wires from the PROG connector and remove the jumper on the BOOT connector.
