Hi,
I successfully build a HeaterMeter v4.3 a couple of years ago and decided to build two more for friends. I have completed the builds and sadly neither one works. I am using a Raspberry Pi 3B for all three. Since I had a good one, I tried testing the known good boards from my old one with the new boards. Literally nothing new works. The only thing that does work are the two new Raspberry pi 3b boards which I tested with my old setup. Both of them work fine with my older hardware.
I looked things over under a microscope and can't find anything. One thing I did note is that the version of the HeaterMeter baseboard has changed. A resistor and a Diode (D3) and the 1K Resistor have swapped positions and another Diode D2 polarity looks to have been reversed. The pictures in the assembly instructions are a mix of versions, which is confusing (the blue board at the beginning is an older rev). I assembled the new ones following the silkscreen on the board I have so it should be corect, unless there is a silkscreen mistake.
The new button boards are also not working. I tried connecting the new button boards(soldered to the LCD display board) to my known good baseboard and Raspberry pi, and I got nothing on the display for either one.
I tried turning the pot (R6- 10K ohm) to see if that did anything and nothing happened.
Anyone have suggestions?
Beat regards,
Jeff Lavin
I successfully build a HeaterMeter v4.3 a couple of years ago and decided to build two more for friends. I have completed the builds and sadly neither one works. I am using a Raspberry Pi 3B for all three. Since I had a good one, I tried testing the known good boards from my old one with the new boards. Literally nothing new works. The only thing that does work are the two new Raspberry pi 3b boards which I tested with my old setup. Both of them work fine with my older hardware.
I looked things over under a microscope and can't find anything. One thing I did note is that the version of the HeaterMeter baseboard has changed. A resistor and a Diode (D3) and the 1K Resistor have swapped positions and another Diode D2 polarity looks to have been reversed. The pictures in the assembly instructions are a mix of versions, which is confusing (the blue board at the beginning is an older rev). I assembled the new ones following the silkscreen on the board I have so it should be corect, unless there is a silkscreen mistake.
The new button boards are also not working. I tried connecting the new button boards(soldered to the LCD display board) to my known good baseboard and Raspberry pi, and I got nothing on the display for either one.
I tried turning the pot (R6- 10K ohm) to see if that did anything and nothing happened.
Anyone have suggestions?
Beat regards,
Jeff Lavin