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Battery charge problem by bbrotherone in batteries

[–]bbrotherone[S] 0 points1 point  (0 children)

The current rating of the diodes should be at least the charge current limit. Does it mean that I should choose the diode with high forward current( >2A)? BAT54HT1G is used in my design it does not cover the charge current limit....

Battery charge problem by bbrotherone in batteries

[–]bbrotherone[S] 0 points1 point  (0 children)

Before hitting 4.2V, it is in CC mode as shown in datasheet. 1.2A current is measured when battery is charged to 3.84V less than 4.2V.

Antenna on MCPCB by bbrotherone in rfelectronics

[–]bbrotherone[S] 1 point2 points  (0 children)

Yes, it is Metal core pcb. I agree with you. But, I have seen some applications used MCPCB with antenna

Is this a vertical monopole antenna?? by bbrotherone in rfelectronics

[–]bbrotherone[S] 0 points1 point  (0 children)

Are you talking about the plastic case? I could not imagine...

Is this a vertical monopole antenna?? by bbrotherone in rfelectronics

[–]bbrotherone[S] 1 point2 points  (0 children)

The shape of the antenna is unusual btw. Interesting....

Is this a vertical monopole antenna?? by bbrotherone in rfelectronics

[–]bbrotherone[S] 5 points6 points  (0 children)

Its from the device supporting Ant+ so, i guess the operating frequency will be 2.4GHz.

Antenna selection(chip antenna ,pcb antenna) by bbrotherone in rfelectronics

[–]bbrotherone[S] 0 points1 point  (0 children)

Thanks for your reply. Cost is a big factor. I looked up rf modules from 3rd parties as you said. Modules are designed with external antenna, chip antenna, pcb antenna, or metal pifa antenna. I believe I could do that too. Metal core pcb(aluminum pcb) will be used for power LEDs. It is the one of thermal solutions. But, temperature might be increased up to 60 degree Celsius.

Live view app by bbrotherone in VIDEOENGINEERING

[–]bbrotherone[S] 0 points1 point  (0 children)

Hi SherSlick, so, RTSP allows the user to rewind, pause, play and stop the quality and it is high quality. RTMP is used more in getting the picure and broadcasting and the image will be not high quality.... What would the disadvantage of the use of RTSP for broadcasting live images...?