Some tips / my experience - Raspberry Pi Forums

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hello, know little electronics, no means anywhere near expert.

purchased rpi create type of project able learn more. decided on android-controlled garage roller door.

have got , running, , i'm impressed little box.

first want people have placed information & tutorials on net. without resource there's no way have gotten anywhere.

here few things found rpi may others..

1. has been mentioned, voltage important. measure voltage @ tp1-tp2 whenever change hardware. hardware suck down voltage, , others put in. also, have found voltage can lower when os booted opposed when no os running. thing, if powering rpi usb hub note hub limit voltage/current can pulled port, if hub's ac adaptor can put out enough voltage/current.

2. power management on usb wifi adaptors seems enabled default. had found wifi drop out after while or become intermittent packet loss. happened both of adaptors tried different chipsets. found disabling power management fixed problem. can done adding line "wireless-power off" wlan0 section in /etc/network/interfaces

3. had set wifi according tutorial found on blog, found if drop out occurred os wasn't attempting reconnect automatically. found trick use wpa-roam. here wlan0 section of /etc/network/interfaces config:

code: select all

auto wlan0 allow-hotplug wlan0 iface wlan0 inet manual wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf iface default inet dhcp wireless-power off
hope above of others.

have day!



raspberrypi



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