Reviving the DSO138 DIY Digital Oscilloscope Kit

My DSO138 DIY Digital Oscilloscope Kit had a trouble in the firmware update. And it did not work anymore.

Even following these instructions it was not possible to revive the DSO138 DIY Kit ( http://www.jyetech.com/Products/LcdScope/DSO138_oscilloscope_upgrade.pdf )

Step 1: Solution

After several attempts to fix the problem, here was the solution: My step is to just download stm32flash (https://sourceforge.net/projects/stm32flash/) and using the command:

Stm32flash -w 113-13801-061.hex -v -g 0x0 COM3

COM 3 is my USB TTL converter.

Step 2: Tools

DSO to USB TTL connections:

GND to GND

TX to TX

RX to RX

If it doesn't work, reverse the connection with the TX and RX pins.

Staying like this:

DSO to USB TTL connections:

GND to GND

TX to RX

RX to TX

To program, plug in the power supply.

Step 3: Firmware Download

Comments

[bando.midi]

Hi again... the microcontroller have a bootloader from factory, so I decided to try, but I have this message:
D:\Oscmini>Stm32flash -w 113-13801-061.hex -v -g 0x0 COM7
stm32flash 0.5
http://stm32flash.sourceforge.net/
Using Parser : Intel HEX
Interface serial_w32: 57600 8E1
Failed to init device.

Is this error from my USB to TTL converter, maybe? I have a ch340g too.

Thanks

[nagkiller]

Try to change TX and RX...
Power up the osc.

[bando.midi]

I didn't mention it, but I swapped them and the same thing happens.

[bando.midi]

I didn't mention it, but I did it.

[bando.midi]

works with a new chip? Mine is dead. Thanks!

[nagkiller]

I'm sorry... I can't tell you, you'll have to test it.

[bando.midi]

ok... thanks

[cecadajohn]

maybe its to late but you have to cross the lines, RX to TX andTX to RX

[nagkiller]

Maybe Yes or No... its depend of device... in my case is correct all pins!
Maybe my device has inverted silkscreen.
Thanks.

[tytower]

Some of the files mentioned must be downloaded . The url's wont load to comments so you need to put them in the instructable . In particular the hex file you uploaded to the oscilliscope

[nagkiller]

I'm sorry for not mentioning, but you can download it from the manufacturer's website, the link is in the instructions document (http://www.jyetech.com/Products/LcdScope/Firmwares_138.php).

[tytower]

Arn't they nifty devices . Bloody cheap and excellent clear plastic boxes . I recommend them to anybody that does not have one

[nagkiller]

Yes, I agree ... I bought it too.

[Swansong]

Thanks for sharing :)