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@tong: Hi, I think your battery voltage is very low and you should use the higher voltage source as LED itself needs around 2V to operate and there must be some voltage drop in the circuit. So I believe you are not able to get proper result with this input voltage.
Used **broken link removed** some time back with some 2 layer cards. . Satisfied both times. I see that they now provide pcb desgin service too. Could recomend them, nice looking cards.
they've got an office in Canada but orders are done in China.
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