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1079 discussions

Re: [Arm-netbook] AC to DC power adapter with multiple outputs
by Benson Mitchell 30 Sep '13

30 Sep '13

On Sep 29, 2013 9:50 AM, "Dr. David Alan Gilbert" <dave(a)treblig.org> wrote: > Have you tried a normal PC power supply; I think there is a way to fudge > them to believe a motherboard is connected. That's the ticket. But there is one gotcha with this -- some PSUs won't operate or don't operate well with no or very low load (they need like 1-5% of rated current, minimum). So check the voltages with no load, if all seems well, good! otherwise, throw a 12V light bulb on the output and that should make it behave. Benson

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Re: [Arm-netbook] [flying squirrel] TODO list
by luke.leighton 29 Sep '13

29 Sep '13

argargargh, the USB is connected the wrong way round to the STM32F. arghargargh :) so i have to carefully pull up 2 legs of the STM32F then solder flying leads underneath them.... *gibber*

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Re: [Arm-netbook] [flying squirrel] TODO list
by luke.leighton 29 Sep '13

29 Sep '13

root@debian:~# i2cdetect 1 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-1. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- 15 -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- 34 -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- 51 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- woo! 0x51 i think is the eeprom, 0x15 the 3d sensor, 0x34 the AXP209. let's plug in the touch panel.... i2cdetect 1 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-1. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- 15 -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- 34 -- -- -- 38 -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- 51 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- haaaaaa :)

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Re: [Arm-netbook] [flying squirrel] TODO list
by luke.leighton 28 Sep '13

28 Sep '13

woo! root@debian:~# lsusb Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 003: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter

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