Honeywell-HAP-801APTW - Capacitor Change

Previously the capacitor on the PCB is leaking and damaged the whole board after operating for about 2 years.

Major capacitor voltage is 400V, 35V and 12V

TM-902C cheapest K type thermometer

  After purchasing the TM-902C*, I am addicted to measure temperature for something...

*TM-902C

Cheap(about RMB17≈NTD75≈USD3) but relatively accurate K type thermometer(?). Response is fast enough.(3 times/sec sampling rate)

It's also Taiwan Company brand(LUTRON) but of course made in China.

LED project 27x9 Piranha led(食人魚)

使用LED 燈泡(E27)裡的驅動板，計算(並量測)後需要27x7顆LED。以下是焊接完成試點結果。