Carambola Wiki

carambola

2011-12-28T11:46:23-05:00

Where to start (Build firmware, setup serial communication and TFTP server, flash *.bin image using bootloader, etc.) Connecting to carambola (Serial, TFTP, SCP, etc.) Using and Customizing (Network/WiFi settings, installing/removing packages, etc.)

carambola_change_mac_address

2011-09-12T00:49:56-05:00

ifconfig br-lan downifconfig eth0.1 downifconfig eth0.2 downifconfig eth0 down ifconfig eth0.1 hw ether 00:11:22:33:44:55 ifconfig eth0.2 hw ether 00:11:22:33:44:55 ifconfig eth0 hw ether 00:11:22:33:44:55 ifconfig eth0 up ifconfig eth0.1 upifconfig eth0.2 upifconfig br-lan up/etc/init.d/network restart Edit /etc/config/network

carambola_change_parameters_before_compile

2011-12-06T14:34:57-05:00

Here are some hard to find files you would like to edit before compiling main image: To edit network settings: <...>/carambola/build_dir/target-mipsel_r2_uClibc-0.9.32/root-ramips/etc/config/network To edit Wireless parameters: <...>/carambola/build_dir/target-mipsel_r2_uClibc-0.9.32/root-ramips/etc/config/wireless To change banner message:

carambola_change_welcome_message

2011-09-11T03:50:25-05:00

This is how default welcome message looks like. [ Before] You can change it by editing /etc/banner file on your carambola. [ After] ..|'''.| Powered by 8devices.com '|| '|| .|' ' .... ... .. .... .. .. .. || ... ... || .... || '' .|| ||' '' '' .|| || || || ||' || .| '|. || '' .|| '|. . .|' || || .|' || || || || || | || || || .|' || ''|....' '|..'|' .||. '|..'|' .|| || ||. …

carambola_compiling_packages

2011-09-03T04:33:00-05:00

todo

carambola_comunity

2011-09-25T11:58:20-05:00

Q: What is the preferred method of debugging Carambola ? (I want, for instance, interface a SPI sensor.) A: If you wish to debug hardware it is always the best to use logic analyzer.

carambola_connecting

2011-09-11T07:00:10-05:00

* Serial console, cable * TFTP * SCP * WGET

carambola_connecting_ht1632

2012-03-25T08:40:31-05:00

This article covers how to connect HT1632 LED driver to Carambola using only it's own peripherals and how to display real-time clock. I have used my own custom made board to drive LED's, but there are some popular options in ebay (just enter “HT1632”) if you do not wish to make PCB's and solder (though code will drive circuit, but you have to adjust a bit). In my case it was a bit challenging because of small (2x2cm) LED matrix. Anyway, there is schematics.

carambola_connecting_lcd_display

2012-05-14T14:48:24-05:00

This topic covers simple way to interface with LCD display. For this tutorial I am using cheap (under 20$) serial 2.2" display. Connection is more than simple - no soldering or electronics skills are required. See picture: * LCD_SCL -> GPIO7 * LCD_SDA -> GPIO13 * LCD_CS -> GPIO9 * LCD_RST -> GPIO11 * LCD_RS -> GPIO12

carambola_connecting_spi_flash_m25p64

2012-02-02T11:25:03-05:00

About This article covers how to connect serial SPI flash memory to your Carambola. I use M25P64 flash memory in this case which is 8MB. Connecting Building firmware * Get latest OpenWrt repository and build freshly. * Enter make menuconfig and enable * Kernel modules * SPI Support * kmod-spi-dev

carambola_demo_projects

2012-03-27T15:37:04-05:00

Carambola drives serial 2.2" LCD display Connecting HT1632 LED matrix driver Connecting 8MB SPI flash memory M25P64 Connecting I2C I/O expander PCF8575 Simple robot demonstration Pachube and TFA dostmann Nexus weather station Pachube and Sparkfun weather sensor

carambola_fswebcam

2011-10-16T09:41:58-05:00

Add USB webcam support as mentioned in motion Install fswebcam opkg update opkg install fswebcam Edit configuration file vi /tmp/fswebcam.conf add text device /dev/video0 input 0 loop 15 skip 20 background resolution 640x480 set brightness=60% set contrast=13% jpeg 95 save /tmp/viewcam.jpg palette MJPEG In order to run and capture once type:

carambola_hardware

2011-09-11T06:33:12-05:00

Pinout Registers I2C SPI GPIO I2S USB

carambola_lan

2011-09-11T07:10:03-05:00

Temporaly ifconfig br-lan 192.168.0.104route add default gw 192.168.0.1 br-lan Permanently Edit /etc/config/network file and change couple of lines under config interface lan option ipaddr 192.168.0.1 option netmask 255.255.255.0 DNS support edit /etc/resolv.conf and add:

carambola_lcd

2011-09-11T02:40:46-05:00

Wifon

carambola_lcd2usb

2011-11-15T03:50:53-05:00

scp test@192.168.101.7:/home/test/carambola2/bin/ramips/packages/lcd2usb_1_ramips.ipk /tmplcd2usbhttp://www.harbaum.org/till/lcd2usb/index.shtml - ideti kur download src ir bin - ideti fotkes - kaip subuildinti firmware (+usb suppport) - lcd4linuxopkg update opkg install http://downloads.x-wrt.org/xwrt/kamikaze/snapshots/ramips/packages/lcd4linux_r1143-1_ramips.ipk !!!!

carambola_luci

2012-02-03T00:16:14-05:00

cd carambola/./scripts/feeds update packages luci./scripts/feeds install -a -p lucimake menuconfig * LuCI * Applications * luci-app-ddns: Y * luci-app-firewall: Y * luci-app-ntpc: Y * luci-app-qos: Y * Libraries * luci-lib-lucid-http: Y

carambola_mjpg_streamer

2011-09-18T08:42:36-05:00

You need camera which supports UVC (list) make menuconfig Select: * Kernel modules * Video Support * Select all if unsure * USB Support * kmod-usb-video make Flash new compiled image. Open terminal to carambola opkg updateopkg install http://downloads.x-wrt.org/xwrt/kamikaze/snapshots/ramips/packages/mjpg-streamer_r136-1_ramips.ipk mjpg_streamer gets configuration from /etc/config/mjpg-streamer file, which by default looks like:

carambola_motion

2011-09-11T04:19:51-05:00

1. Add support for kernel usb video support 2. Install motion opkg install 3. Edit: vi /etc/motion.conf or you can use prepared configuration file.

carambola_mpd

2011-09-19T12:59:11-05:00

Compile cd carambola make menuconfig Select: * sound * mpd * mpc * Base system * librt make Configure Edit on carambola /etc/mpd.conf add this text audio_output { type "alsa" name "My ALSA Device" device "hw:0,0" format "44100:16:2" …

carambola_music

2011-09-06T23:27:32-05:00

1. Add kernel USB sound support 2. Compile carambola and upload new image. 3. install package madplay (opkg update, opkg install madplay) 4. Connect external USB sound device. 5. copy mp3 files or set up remote file system 6. play: madplay /tmp/1.mp3

carambola_others_about_us

2011-12-07T04:52:00-05:00

* * * * *

carambola_pachube

2011-11-04T01:52:01-05:00

Live data were switched off. See weather station instead. Get Pachube API key from here Install curl. * Build custom firmware with enabled USB serial port support: Under Kernel modules / USB support / kmod-usb-serial select all drivers if you are unsure which one you have or kmod-usb-serial-ftdi in our case.

carambola_pachube_nexus

2011-11-09T02:25:05-05:00

This topic demonstrates how to connect TFA dostmann Nexus wireless weather station (datasheet) to carambola and to upload data to remote server. Other weather stations that possible can be supported (but not tested): Hideki, Nexus, Mebus, Irox, Honeywell, Cresta TE923, TE923W, TE821W, WXR810, DV928, TE831X, IROX PRO-X USB

carambola_pcf8575_example

2012-01-10T13:12:42-05:00

This topic covers how to connect I2C device to Carambola. For this tutorial I will use PCF8575 16 bit I/O expander. In order to connect I2C device I will need few passive components. See attached schematics. There is also power selection jumper (5V or 3.3V) and SPI pin header. Discard these for this subject.

carambola_pinout

2011-09-03T13:13:06-05:00

Carambola PIN Description PIN Name GPIO Motherboard pin 1 GND 2 LAN0 ETH0_RD+ 3 LAN0 ETH0_RD- 4 LAN0 ETH0_TD+ 5 LAN0 ETH0_TD- 6 GND 7 LAN1 ETH1_RD+ 8 LAN1 ETH1_RD- 9 LAN1 ETH1_TD+…

carambola_remote_file_system

2011-09-11T02:40:50-05:00

TODO samba nfs

carambola_robot1

2011-11-08T12:38:04-05:00

It is very simple demonstration how to use Carambola as rover platform with video feedback. It could be nice toy to build in couple of hours. I used very simple hardware setup. Key components are motor controller, 47:1 gearmotors, wheels, UVC webcam supported by mjpg_streamer and of course Carambola.

carambola_scp

2011-09-11T12:42:35-05:00

If you are using fresh installed ubuntu, you should install ssh server sudo apt-get install openssh-serverscp test@192.168.0.101:/home/test/* /tmp

carambola_serial_cable

2011-09-11T03:40:55-05:00

It is best to connect to carambola using standard RS-232 male cable. Just plug cable to carambola, set 115200 8N1 settings without hardware flow control and power up your carambola. However, if you have TTL level USB to serial converter, you should do some soldering.

carambola_serial_terminal

2011-12-08T10:20:43-05:00

* 115200 8N1, no hardware flow control. TODO TODO picocom -f n -p n -b 115200 -i -r -l /dev/ttyUSB0picocom -b 9600 /dev/ttyUSB0 * Picocom man * To exit, press and hold CTRL, A, Q. If you do not have installed stty you should get it by typing

carambola_simple_mysql_demo

2011-09-11T04:01:15-05:00

Package to be build resides in carambola/package ~/carambola/package/hello/ │ Makefile │ └───src main.c Makefileinclude $(TOPDIR)/rules.mk PKG_NAME:=hello PKG_RELEASE:=1 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) include $(INCLUDE_DIR)/package.mk define Package/hello SECTION:=utils CATEGORY:=Utilities TITLE:=Simple program to read/write from memory. endef define Package/hello/description Simple program to read/write from/to any location in memory. endef define Buil…

carambola_simple_serial_example

2011-09-11T02:40:53-05:00

Makefile include $(TOPDIR)/rules.mk PKG_NAME:=weather PKG_RELEASE:=1 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) include $(INCLUDE_DIR)/package.mk define Package/weather SECTION:=utils CATEGORY:=Utilities TITLE:=sparkfun weather station endef define Package/weather/description Simple program to get serial port data endef define Build/Prepare mkdir -p $(PKG_BUILD_DIR) $(CP) ./src/* $(PKG_BUILD_DIR)/ endef define Package/weather/install $(INSTALL_DIR) $(1)/usr/sbin $(INSTALL_BIN) …

carambola_tftp_server

2011-09-20T01:25:25-05:00

You can set up TFTP server very quickly using TFTP32 sofware. It is free. Enable TFTP server. Your settings should look like: If you wish, you can use linux machine to do the same task. sudo apt-get install xinetd tftpd tftpsudo touch /etc/xinetd.d/tftpsudo nano /etc/xinetd.d/tftp Paste this code:

carambola_todo

2011-11-22T05:10:30-05:00

* ttyS1 does not work * mysql example crash (segfault) if server not found. It is not in PC compiled version * cloud * Build factory * How to use samba * using remote file system * Write the new flash image not using serial port (like mtd -r write openwrt-ar71xx-wzr-hp-g300nh-squashfs-sysupgrade.bin linux) * demo projects * wifi - serial/lan converter using terminal * LUA for weather carambola

carambola_upload_firmware

2012-01-22T06:21:25-05:00

This topic covers few methods how to upgrade firmware on Carambola. Copy build firmware to TFTP directory. You should use openwrt-ramips-rt305x-carambola-squashfs-sysupgrade.bin file. It is located in carambola/bin/ramips folder For your own conveniency rename to shorter name. For example 2.bin.

carambola_usb

2011-09-11T06:35:29-05:00

opkg install usbutils type: lsusb to get information about connected USB devices

carambola_usb_disk

2011-09-12T02:08:49-05:00

Build new flash image with these modificatations. make menuconfig From Kernel modules/Filesystems, Kernel modules/Native Language Support and Kernel modules / USB support add kmod-nls-base kmod-nls-cp437 kmod-nls-cp850 kmod-nls-iso8859-1 kmod-nls-iso8859-15 kmod-fs-vfat kmod-usb-storage Upload this image to carambola.

carambola_using_and_customizing

2012-01-10T14:29:58-05:00

using MMIO tool enable ttyS0 Using opkg Changing welcome message 3G/GPRS connecting WiFi connectivity (AP, STA, AD-HOC) Change MAC address LAN Connect external disk Changing Carambola parameters before compiling (network,wireless,banner,etc.)

carambola_using_opkg

2011-09-18T06:11:00-05:00

opkg configuration file resides here: /etc/opkg.conf default file content is: root@OpenWrt:/# cat /etc/opkg.conf src/gz snapshots http://downloads.openwrt.org/snapshots/trunk/ramips/packages dest root / dest ram /tmp lists_dir ext /var/opkg-lists option overlay_root /overlay When you start up carambola you must update package list. Otherwise you will not see many available packages. This list is saved in /tmp, after you reboot package list is erased. You save some precious space on your caramb…

carambola_where_to_start

2012-01-29T06:26:29-05:00

Do everything as non-root user! sudo apt-get install subversion g++ ncurses-term zlib1g-dev gawk flex patch openssh-server minicom tftp tftpd gettext libncurses5 libncurses5-dev unzip quiltsudo apt-get install git git-doc git-gui git clone https://github.com/8devices/carambola carambola It is not necessary, but you might need this later.

carambola_wifi

2011-09-18T10:19:32-05:00

rm /etc/config/wirelesswifi detect > /etc/config/wirelessvi /etc/config/wireless Enable wireless: # REMOVE THIS LINE TO ENABLE WIFI: # option disabled 1 Edit etc/configure/network and etc/configure/wireless etc/configure/network config interface loopback option ifname lo option proto static option ipaddr 127.0.0.1 option netmask 255.0.0.0 config 'switch_vlan' option 'vlan' '1' option 'device' 'eth0' config interface lan option ifname…

change_default_configuration

2011-09-18T03:59:46-05:00

Edit: carambola/target/linux/ramips/base-files/etc/config/network Change welcome screen example Edit: carambola/package/base-files/files/etc/banner

mmio_fixing_ttys0

2012-03-09T08:58:45-05:00

From factory Carambola is shipped with ttyS0 disabled. Or to be more precise it is in GPIO mode. Which is sometimes not what we want. It is very easy to change this. In order to change internal Carambola registers you need small tool called mmio. You can download binary file from here. Or you can download source from GitHub and compile it yourself. If you put binary file inside /tmp folder it will be deleted after you reboot your Carambola. If you wish to have this tool permanently put it insid…

motion_conf_example

2011-09-11T04:19:22-05:00

daemon off process_id_file /var/run/motion/motion.pid setup_mode off videodevice /dev/video0 v4l2_palette 8 input 8 norm 0 frequency 0 rotate 0 width 320 height 240 framerate 1 minimum_frame_time 0 netcam_tolerant_check off auto_brightness off brightness 0 contrast 0 saturation 0 hue 0 roundrobin_frames 1 roundrobin_skip 1 switchfilter off threshold 1500 threshold_tune off noise_level 32 noise_tune on despeckle EedDl smart_mask_speed 0 lightswitch 0 minimum_motion_frames 1 pre_capture 5 post_ca…

plasma_tv_42pc1rr_control

2011-10-11T11:40:44-05:00

* Connect your TV to Carambola using serial cable * Setup your TV to known ID. To do this, use your remote. * Press MENU, select SPECIAL * Select Set ID * Adjust ID from 1 to 99. I left default, which is 1. * Setup Carambola network. (I used Wireless as client (STA) mode). In this mode Carambola connects to my WIFI router automatically. * Install picocom to carambola

sidebar

2011-12-30T01:49:09-05:00

* Wiki Home * Where to start * Connecting to carambola * Using and Customizing * Demo projects/examples * Hardware

simple_gpio_control

2011-12-28T15:04:18-05:00

This short tutorial describes how to get GPIO working. For this you need tool called gpioctl. Table describing which pin is where can be found here: . * Type make menucongfig * Under Utilities select package gpioctl and build carambola firmware (although you can do it directly on carambola typing opkg update; opkg install gpioctl)

simple_i2c_control

2011-12-28T15:22:42-05:00

This short tutorial shows how to control I2C from carambola. You should install i2ctools under Utilities. After this you have few files on your carambola. Type i2c --help to see how to use them. It is trivial. * i2cdetect * i2cdump * i2cget * i2cset

start

2011-09-03T02:18:23-05:00

Carambola