I’m working on a custom canister dive light and I have an odd issue.
I use Cree XHP 70 6v, piezotg from taskled, LD3 driver and 2s5p 18650 battery.
1. I connected the led (XHP 70 6V) and the piezo latch circuit directly to the battery (2s5p lion) without the led driver. The measured current
was around 6A. I could switch ON/OFF the light by pressing the piezo button without any problem.
2. I connected the led to the battery with the led driver and without the piezo latch circuit. I could “switch” ON/OFF and change modes by breaking and reset
the connection between the driver and the battery.
3. If the driver and the piezo latch are togethet in the circuit I can switch ON/OFF only at lower modes. If the led runs in 100% mode it is not possible to switch OFF. It also does not matter if there are other modes in the group or 100% is a single mode in a group, the phenomena is the same.
Has anyone experienced similar things with piezo switches?