firman
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Posts posted by firman
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From my VERY humble expirience with
nanopi M1 + cam500 from friendlyARM
uname -a = Linux nanopim1 3.4.112-sun8i #8 SMP PREEMPT Fri Jul 22 13:36:16 EEST 2016 armv7l armv7l armv7l GNU/Linux
1.move R6 to R5 on cam500 pcb (so making VDDIO 3v, not 1.8V)
2. enable for a while twi2 and check addr 0x3c with i2ctool (in my case works only with VDDIO=3V)
3. edit in script vip_dev0_mname gc2035->ov5640
4. modprobe ov5640, modprobe vfe_v4l2
...
and something like fswebcam -p YUV420P 111.jpg
it seems it works! (somehow
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How did you attach the microphone ? I mean which point did you connect to MIC- and MIC+ ? Did you coonect the solder point directly to the microphone or did you use a circuit ?
The circuit was just like as in Orangepi-mini-v1_0_schematic.pdf, VMIC->MIC-MBIAS, MICM->MIC1N, MICIN1->MIC1P (look at the picture from post #2).
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I've managed to solder AV-OUT, Audio Out and Mic In to the solder points. AV and audio out work without problem but Mic In has noise on output. I've tested all point (Positive, Negative and Bias) but all of them has noise on output even with my designed Pre-amp.
With OrangePi Mini2 I solder the pre-amp to mic pins and there is no noise. Is there any difference between solder points on mini2 microphone on board and solder points on Opi ONE ?
Can you please tell me what's wrong and the correct way to plug a microphone to the board ?
Generally no pre-amp is needed for mic, schematic is the same as for orangepimini (NOT orangepipc!). Check the alsamixer settings also. In my case OPIONE mic works well.
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Hi!
here is Opi1 armbianmonitor -d output for some ext. hdds:
Temperature Issue with NanoPi NEO
in Allwinner sunxi
Posted
Check out your board hw revision with schematics on fa wiki page. Bad luck if you have no dc-dc U7 ic.