Geotech Posted July 9, 2020 Share Posted July 9, 2020 After the first 200, the TDI used an Atmel micro that had a tendency to randomly lock up. When you turn on the TDI it would just squall. A lot of units were shipped and the problem didn't show up until after some usage. I found a nearly pin-compatible PIC micro, rewrote the code, and we had a drop-in replacement. Until I got that done we swapped out a lot of units. Sometimes more than once. The SL started out with the PIC so it never had the problem. I was never able to figure out why the Atmel locked up. 2 1 Link to comment Share on other sites More sharing options...
havingstl Posted July 9, 2020 Share Posted July 9, 2020 3 hours ago, Geotech said: After the first 200, the TDI used an Atmel micro that had a tendency to randomly lock up. When you turn on the TDI it would just squall. A lot of units were shipped and the problem didn't show up until after some usage. I found a nearly pin-compatible PIC micro, rewrote the code, and we had a drop-in replacement. Until I got that done we swapped out a lot of units. Sometimes more than once. The SL started out with the PIC so it never had the problem. I was never able to figure out why the Atmel locked up. Would the unit lock up permanently or after enough resets it would operate again? Link to comment Share on other sites More sharing options...
Geotech Posted July 9, 2020 Share Posted July 9, 2020 19 minutes ago, havingstl said: Would the unit lock up permanently or after enough resets it would operate again? With most units flipping the power switch a few times would usually get it to kick on. Some, though, would lock up every time. Link to comment Share on other sites More sharing options...
RobNC Posted July 9, 2020 Share Posted July 9, 2020 Real Simple Link to comment Share on other sites More sharing options...
Jim in Idaho Posted August 19, 2022 Share Posted August 19, 2022 Just a quick report on my heavily modded TDI SL. It stilll works very well, with my 16v battery packs. My wife used it on a recent trip to South Pass, Wyoming, and found lots of old lead bullets, cartridges, etc. A couple of days later, I took it out nugget hunting, and while I found no gold, it did find a piece of what looked like chewing gum foil about 3/8" long and 1/16" in diameter. The foil was 3" down. Doubt it weighed 1/2 grain. My TDI isn't a Minelab or Garrett, but it's still very sensitive, and i can swing it all day. The sensitivity and sweep speed mods, along with my vernier controls really make a difference. Jim 3 Link to comment Share on other sites More sharing options...
Jim in Idaho Posted August 19, 2022 Share Posted August 19, 2022 If anybody's interested, mine's a 2013 model. Jim Link to comment Share on other sites More sharing options...
Jim in Idaho Posted August 19, 2022 Share Posted August 19, 2022 Forgot to mention...I was using the MJ 8 x 12 coil. Link to comment Share on other sites More sharing options...
chiil Posted August 19, 2022 Share Posted August 19, 2022 Interested in? As in your are selling your TDI SL? Link to comment Share on other sites More sharing options...
Jim in Idaho Posted August 20, 2022 Share Posted August 20, 2022 8 hours ago, chiil said: Interested in? As in your are selling your TDI SL? 8 hours ago, chiil said: Interested in? As in your are selling your TDI SL? LOL...not a chance Chiil...sorry if I gave that impression. Jim 1 Link to comment Share on other sites More sharing options...
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