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maxritter / diy-thermocam

A do-it-yourself thermal imager, compatible with the FLIR Lepton 2.5, 3.1R and 3.5 sensor with Arduino firmware
http://www.diy-thermocam.net
GNU General Public License v3.0
1.1k stars 174 forks source link

Lepton 3.1R Compatibility #104

Closed griffin175 closed 8 months ago

griffin175 commented 9 months ago

Hey Max,

It looks like the new Lepton 3.1R is not yet compatible with the diy-thermocam firmware.

When using a Lepton 3.1R, the boot-up fails. The self diagnostic menu shows "FLIR Lepton failed" and continuing to boot results in the error message "Lepton error, try to reset". My unit works fine with the Lepton 3.5.

The new part number is 500-0758-03. The only functional difference from the 3.5 is the wider viewing angle at 95°

griffin175 commented 8 months ago

Max helped me find a temporary work around. You can trick the firmware into thinking the 3.1R is a Lepton 3.5. If you follow this fix and want to switch back to a Lepton 3.5 you will need to undo the change and re-flash the firmware.

Using Platform IO with VS Core: [https://platformio.org/install/ide?install=vscode](Installing Platform IO)

Clone the firmware repo and open the folder in VS Code. Navigate to 3.0/src/hardware/lepton.cpp and find the bool lepton_version() function. image

Change "05-070170" to "05-070850-" and save.

Connect to the DIY-Thermocam's Teensy via USB and upload the code (top right drop down menu). After compiling and uploading, the DIY-Thermocam should reboot and start working.

maxritter commented 8 months ago

@griffin175 I have included the 3.1R HW revision on the latest firmware 3.0.4: https://github.com/maxritter/diy-thermocam/releases/tag/3.0.4

Please flash and check if this works for you

griffin175 commented 8 months ago

Issue solved, thanks Max!