https://openvario.org/ 2026-10-23T04:17:42+0200 https://openvario.org/ https://openvario.org/lib/tpl/openvario/images/favicon.ico text/html 2017-10-08T16:15:54+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:adapterboard&rev=1507472154&do=diff Adapterboard Description The Adapterboard carries a small island PCB, which comes with the LM2596 step down voltage regulator. This board is called DC-DC-Converter and shall be tested and adjusted before soldering on the Adapterboard. The Adapterboard (sometimes also referred as Mainboard) comes mainly with two MAX 3232 UART and the 30-pin LVDS FPC Display connector. It serves as main interface to the Cubieboard with its 96-pin GPIO. The 96 GPIO-pins of the Cubieboard are split into two sepe… text/html 2017-10-08T16:15:00+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:cubieboard&rev=1507472100&do=diff Cubieboard The Cubieboard does not require special testing under normal circumstances. But there are some cable connections to be made which are required for a reliable function of your Openvario. Cubieboard 2A20 (top view) Test Points Cubieboard (Connected to Adapterboard via 2 "Cubieconnects") text/html 2015-12-04T13:28:10+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:dc-dc-converter&rev=1449232090&do=diff DC-DC-Converter Board Description The Step-Down Voltage Regulator Board (sometimes also referred as DC-DC-converter or buck-converter) is the main power supply of the Openvario. The LM 2596 step down voltage regulator is the major component of the small PCB, which is responsible to provide stable 5 V DC voltage supply for the cubieboard. This small PCB can be obtained via ebay from various vendors for little money. The input voltage may vary typically between 8 V and 20 V DC, the output-voltag… text/html 2017-12-18T09:07:44+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:dual_rotary_encoder&rev=1513584464&do=diff Dual Rotary Encoder with Pushbuttons The dual rotary encoder with pushbuttons can be operated in rough air and keeps your screen tidy. It can be placed wherever you find a suitable place in your cockpit, no matter if oriented horizontally or vertically. text/html 2015-12-04T12:37:29+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:electrical_tests&rev=1449229049&do=diff Electrical Tests Tools The required tools for electrical testing are: * Digital Multimeter (mandatory) * Oscilloscope (optional) * Power Supply (mandatory) A visual inspection of all PCBs is indispensible before connecting them to power. A good magnifier or a microscope with magnification between 4x and 10x is required for the visual inspection. A power supply with simultaneous display of voltage and current is very convenient for monitoring the power consumption of the connected board… text/html 2015-12-04T09:46:48+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:reworking&rev=1449218808&do=diff Reworking Reworking is required if electrical or visual tests failed. Reworking of shorts between neighboured pins (the component stays in place) Components with small separations between their pins (e.g. the Molex-connector of the 30-pin display connector on the Adapterboard) tend to exhibit shorts caused by a too large amount of soldering paste. Don't worry about this, it can be simply solved using desoldering litz-wire (desoldering braid) and Fluxer and a traditional soldering iron with s… text/html 2017-10-08T16:14:02+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:rj45-board&rev=1507472042&do=diff RJ45-Board Description The RJ45-Board is very simple, it comes with 4 self-resetting polyfuses, 4 RJ45-female connectors in one shielded housing and a 12-pin connector. Therefore the probability for mistakes is very low. Verify the correct orientation of the ribbon cable between Adapterboard and RJ45-Board. text/html 2017-12-06T22:57:44+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:sensorboard&rev=1512597464&do=diff Sensorboard Testing of the sensorboard requires, that all other PCB's are working properly. The 10-pin ribbon cable must be connected to the Adapterboard and the single Audio cable to J5 must be connected to the Cubieboard Headphone Connector (GND comes via the ribbon cable). It is recommended to perform the electrical tests text/html 2016-03-04T11:14:28+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:serial_console_boot_log&rev=1457086468&do=diff Serial Console / Boot Log You insert the µSD card with newest image, apply power to your Openvario and wait a few seconds for bootlogo or Tuxes to appear, but nothing happens ... Even without any screen connected we can check on the serial console if the system boots. Remove the housing lower cover to get access to the UART0 pins on the Cubieboard and connect jumper wires for RX, TX and GND to a 3.3V TTL serial to USB converter. text/html 2017-01-22T12:25:07+0200 Anonymous (anonymous@undisclosed.example.com) https://openvario.org/doku.php?id=projects:series_00:electrical_tests:touchscreen&rev=1485084307&do=diff Touchscreen The Cubieboard does support 4-wire resistive Touchscreens, which are available from several vendors for prices around 20 Euro. The Touchscreen is connected via the Adapterboard. Check out the bill of material for a suitable touch panel, which perfectly fits to the Pixel Qi 7