# EmonTx 3.2.1 with PLL diversion stop working after upload

**URL:** <https://community.openenergymonitor.org/t/emontx-3-2-1-with-pll-diversion-stop-working-after-upload/7886>\
**Category:** emonTx\
**Created:** [12 July 2018 11:10 UTC](https://community.openenergymonitor.org/t/emontx-3-2-1-with-pll-diversion-stop-working-after-upload/7886 "2018-07-12T11:10:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![1111](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/1/71e660/32.png) [@1111](https://community.openenergymonitor.org/u/1111)\
**Post date:** [12 July 2018 11:10 UTC](https://community.openenergymonitor.org/t/emontx-3-2-1-with-pll-diversion-stop-working-after-upload/7886/1 "2018-07-12T11:10:16Z")

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Hi,  
I have EmonTx V3.2.1(according to PCB) that works without any problem since the beginning of 2015. Recently I decided to do some modifications over constants into the beginning of the sketch. The sketch is from here  
[https://learn.openenergymonitor.org/pv-diversion/pll/files/emonTx\_Solar\_Controller\_Temperature\_PLL\_0.zip](https://learn.openenergymonitor.org/pv-diversion/pll/files/emonTx_Solar_Controller_Temperature_PLL_0.zip)  
After upload with Arduino IDE(under Linux and Windows - the same result) and USB to UART device purchased with EmonTx, the device stoped working, red LED lights continuously. I tried to power it with 9V AC/AC converter that I have used since the beginning, and the result was LED blinking approximately two times per second and did not work at all.  
I spend almost a week researching into archived forum as well here without any result. Final attempt was with PlatformIO, and the result is the same again. With PlatformIO I did the serial test but there was not any result on the screen.  
I am not expert, because I am rather mechanical engineer than electrical one, and I have some experience with Arduino IDE at 2015 during initial programming with the same sketch, but since then I did nothing, and everything was in perfect working condition without any problem.  
What is wrong?  
Please help.

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**Author:** ![Robert.Wall](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/robert.wall/32/38246_2.png) [@Robert.Wall](https://community.openenergymonitor.org/u/Robert.Wall)\
**Post date:** [12 July 2018 20:08 UTC](https://community.openenergymonitor.org/t/emontx-3-2-1-with-pll-diversion-stop-working-after-upload/7886/2 "2018-07-12T20:08:17Z")

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What did you change?  
That sketch was originally written for the emonTx V2, therefore unless you have changed the I/O pins, they are wrong for your emonTx V3.2.  
You must have changed those in 2015 to make the sketch work then.

This might help (change the name to **emonTx IO-all.html** )  
[emonTx IO-all.html.txt](https://community.openenergymonitor.org/uploads/default/original/2X/3/32449db09e0e26ddce5800d0bab469c97bd42470.txt) (6.1 KB)

From memory, I do not think there are any other changes you must make, but my emonTx V3.2 is being used for a long-term test, so I cannot run a test for you. But if what I have already written does not solve the problem, post again.

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**Author:** ![1111](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/1/71e660/32.png) [@1111](https://community.openenergymonitor.org/u/1111)\
**Post date:** [13 July 2018 13:31 UTC](https://community.openenergymonitor.org/t/emontx-3-2-1-with-pll-diversion-stop-working-after-upload/7886/3 "2018-07-13T13:31:49Z")

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Yes,  
That was exactly what I need. Thank you very much! The device is already programmed, and everything looks normal. After mounting into the isolated box, I will inform you additionally.