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Andy Halmshaw

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  1. Hi David, I took copies of the magazine articles and have them in PDF format if you are interested. Let me know your email address and I can email them to you. Andy
  2. Hi David I think that the flashing stars as you call them is when the telemetry data going to the Taranis changes. If the data is very stable no flash, when the value changes they flash. Andy
  3. I may be able to help here. If you go to the Telemetry screen on your Taranis transmitter and copy "Cels" (in this case) three times, then edit the first line as per the second photo. Then edit the second line as per the third photo, you will have the individual cell votages, and obviously the third line the same but inserting 3 . This will work for any number of cells in a pack (only four with Chris's telemetry module), just keep copying for the number of cells line. You next need to edit the display page on your Taranis. Then when you long press page on your Taranis transmitter you can display your telemetry data as per the fourth photo, as you can see this is an old pack where the cells are slightly out of balance even though I use a balance charge every time. Hope this is of help. Andy Photo 1 Photo 2 Photo 3
  4. Hi Mike, Thank you for your post, entering the figure you had suggested helped but after experimenting I found that a figure of 1595 gave a more accurate reading. I used another meter in series and compared the readings and adjusted the number until I got the best match. Andy
  5. Thanks for all the advice and help guys. As you can see from the photo below I now have the current at zero and the VFAS voltage correct, the zero current I obtained by editing the current line in the telemetry screen on the transmitter and setting an offset value. It may not be correct in your view but it is working and is consistent. I have added two photos of the soldering of the current sensor and leads and I feel that these are good well made connections, it may be just the combination of wire, connectors, soldering and device that gives the variation I am seeing. You and Mike probably would have an explanation or do I have to change a value in the software so that I do not have to do the offset in the transmitter? Thanks Andy
  6. Hi Chris & Mike, Things are getting better as you will see from the photo below, I checked over the PCB to make sure there were no solder bridges and everything was okay and it was. I noticed that I had no sensor ID so I deleted the sensor and then discovered the sensor again and it appears to be working. What is being displayed is not correct but this seems to be the zero point and when I advance the throttle it goes up by about 1.5A (no prop fitted), I just need to find out how to set this to zero. At 47A the device would be getting very hot but it is quite cold. Do I need to edit the current sensor line in my Taranis as I notice it has an "Offset " option or is something still incorrect? You are correct Chris I do have the battery connected to the right and the ESC to the left, I notice that the VFAS voltage has come down ( not sure if this is the expected voltage). I found an error in one of the lines of code "#define RESISTOR_TO_GROUND 2700,2700,2700,2700,2700,2700" I had 2200 as the first number so was that causing part of the problem? I would like to calibrate the device but am not sure where to take a measurement and then which line to add it into. Can you give some help here please? I may give your values a go in the next one I build Mike and just see how they compare, as I have said this is all new to me, as the only programming I have done is GW Basic many years ago. Thanks Andy
  7. Hi Chris, I have built my first Multi Function Telemetry sensor using your PCB and am chuffed to bits with the results. After reading Mikes message and remembering a problem we had at work I have left the LiPo negative wire off, it all appears to be working fine apart from the fact the Curr is reporting 0.0A. As you can see from the photo everything else looks correct. Any help or ideas would be gratefully received and what settings to use? Thanks Andy
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