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[[bc10]] *Breakout [#t2d8a743] > This is the information of a Breakout board, which is connected to Main Board of bc10 via a slot for Expansion Board.~ This Breakout is attached to the left side (from AMOLED) slot of Main Board, which is the other side of slot that the~ standard (included) Expansion Board is connected.~ - Design -- Schematic and Gerber data ||OrCAD format|pdf format| |回路図|&ref(bc10-008-0001.dsn);|&ref(bc10-008-0001.pdf);| |Gerber|&ref(bc10-008-0001.zip);|&ref(bc10-008-0001.pdf);| ~ -- Parts List |Product Category|Product ID Number|Maker|Quantity|Memo| |CENTER:Connector|14 5078 030 510 861+|KYOCERA ELCO|CENTER:1|| ** Sample #1 (Barometer sensor) [#taa89744] > The barometer module, AE-SCP1000-D01, is used for this sample. > - Schematic~ &ref(bc10-002-0003.pdf);~ The schematic is only available. Since no boards are created for this sample, there is no Gerber data.~ > - Description~ The barometer module works between 2.4~3.3V (standard 2.7V), and the outputs of this module can be read via~ SPI connection. For this sample, the 2.85V output LDO (Low Drop Output) type Power Supply IC (S191841DT-285)~ is selected. If output voltage (including the margin of error) is between 2.4 and 3.3V, the original IC can be replaced~ with other makers' ICs here. (To use other power supply ICs, be careful with voltage drop, too.)~ ~ ※ For bc10, 3.3V output includes the margin of error, and occasionally its output voltage exceeds 3.3V. This excess~ voltage highly unlikely causes malfunctions on this barometer module. To meet the guideline of the data sheet,~ use this Power Supply IC and reduce the voltage at 2.85V.~ ~ The digital interface of bc10 is 1.8V level, and this module cannot directly connect to bc10. (As directly connecting the~ two devices, it may cause damages on bc10.) To connect these devices, the signals are needed to be transferred between~ 1.8V and 2.85V. For the connection, a Voltage Conversion IC, TXB108 is employed. As this IC is only capable of surface~ mount, a pitch converter board is used for mounting this Voltage Converter IC.~ ~ bc10 and the barometer sensor module is attached via a the voltage converter. 4 lines of SPI (CLK. MOSI, MISO, and CS)~ and one line of TRG and DRDY (totally 2) are connected. The latter 2 lines are connected to 2 lines of GPIO (GPIO_152~ and GPIO_153, respectively).~ ~ On the sample, the empty pins are remain open. There are no issues for experimental level, but to use the device in far~ more stable condition, pull-up resistors can be applied.~ > -Parts |Product Name|Quantity|Specs|Memo|h |bc10 expansion board|1||| |Barometer sensor module|1||http://akizukidenshi.com/catalog/g/gM-03468/| |IC socket DIP-8|1|8 pin|http://akizukidenshi.com/catalog/g/gP-00035/| |Pin Header 2x40|1||Divided into 2x5 http://akizukidenshi.com/catalog/g/gC-00082/| |Voltage Converter IC|1|TXB0108|http://focus.tij.co.jp/jp/docs/prod/folders/print/txb0108.html| |Pitch converter board |1||http://www.sunhayato.co.jp/products/details.php?u=203&id=07012| |Power Supply IC 2.85V|1|SI91841DT-285|http://akizukidenshi.com/catalog/g/gI-01334/| |Ceramic capacitor |1|0.01uF|This depends on the type of Power Supply IC employed| |Ceramic capacitor|2|0.1uF|| |Ceramic capacitor|2|1uF|This depends on the size of the Power Supply IC| -- 0.01μF and 1μF ceramic capacitors are for using the Power Supply IC S191841DT-285. If other makers' IC is used,~ please study its recommended circuit, first. -- Pin Headers are divided into 2 groups (2x5) and used. ~ - Instructions~ Go through whole assembly process before actually start working on the board. -- Each part is placed where is should be, and examine the layout and the order of wiring. -- Wire the Power Supply IC (S191841DT-285) at empty space of the universal pattern. Gaps between IC pins are narrow,~ so that please be careful with short circuit. To use the pitch converter board, easily wire it on. -- The IC socket, which is attached to the barometer module, is mounted. Wires keep longer as each wire pulls out from the pin. -- the voltage converter IC is mounted on to the pitch converter board as using Pin Headers. -- Wire each connector. -- Mounted Side 1~ &ref();~ &ref(CIMG8723.JPG,,25%);~ –- Mounted Side 2~ &ref();~ The Barometer module is mounted~ &ref();~ &ref(CIMG8724.JPG,,25%);~ -- The Barometer module is mounted~ &ref(CIMG8725.JPG,,25%);~ - To test the operation~ This is a shell script for testing its operation. This shell script controls SPI and GPIO.~ &ref(scp1000_test.sh);~ --- ** Sample #2 (Thermometer sensor) [#hb74b6d6] > A thermometer sensor and an AD converter are used for this sample.~ - Schematic~ &ref(bc10-002-0006.pdf);~ The schematic is only available. Since any boards are not created for this sample, there is no Gerber data.~ - Description~ The thermometer sensor is an analog output type sensor, which changes the output voltages proportional to temperatures.~ It outputs 10.0mV per 1 degree Celsius, and it can measure from 0 to 70 degree Celsius (accuracy of 4 degree Celsius).~ Since the expansion board connectors of bc10 do not have analog input interface, analog outputs must be converted into~ digital values via an analog-digital converter. Both thermometer sensor and analog-digital converter work between~ 2.7~5.5V, and bc10 provide power to the sensor and converter at the level of 3.3V. On the other hand, the digital interface~ of bc10 requires at level of 1.8V, so it cannot connect directly. (If the direct connection may cause significant damage on bc10.)~ To connect these devices, the signal is needed to transfer between 1.8V and 3.3V. To do voltage conversion, TCB0108 is used.~ This IC is not surface mount type, and a pitch converter board is used for mounting this voltage converter IC.~ ~ As long as keeping pairs A1~A8 with B1~B8, a pair can be replaced with the other pair. 1.8V is placed at A-side,~ and 3.3V is always on B-side. bc10 and the analog-digital converter are connected via the voltage conversion IC.~ 4 lines of SPI (CLK, MISI, MISO, and CS) are occupied.~ ~ On the sample, the empty pins are remain open. There are no issues for experimental level, but to use the device~ in far more stable condition, pull-up resistors can be applied.~ |Product Name|Quantity|Specs|Memo|h |bc10 expansion board|1||| |Thermometer Sensor|2|MCP9700-E/TO|http://akizukidenshi.com/catalog/g/gI-03286/ (8 pieces per package)| |analog-digital converter |1|MCP3204|http://akizukidenshi.com/catalog/g/gI-00239/| |IC Socket DIP-14|1|14 Pin|http://akizukidenshi.com/catalog/g/gP-00006/ (10 pieces per package) Socket are often included in the package of analog-digital converter| |Pin Header 2x40|1||This can be divided into 2x5. http://akizukidenshi.com/catalog/g/gC-00082/| |Voltage converter IC|1|TXB0108|http://focus.tij.co.jp/jp/docs/prod/folders/print/txb0108.html| |Pitch converter board|1||http://www.sunhayato.co.jp/products/details.php?u=203&id=07012| |Ceramic capaciters|5|0.1uF|| -- One package of the thermometers contain 8 thermometer sensors. In this sample, there is extra space~ in the expansion board, two thermometer sensors are used. There are no problems with using 1 sensor.~ (As using 1 thermometer, four (4) 0.1μF-ceramic capacitors are required.) -- In this sample, both ceramic disk type and surface-mount chip type ceramic capacitors are used.~ -- The pin-headers are divided into 2 sets of 2x5 size.~ -- The data sheet of analog-digital converter is available at Mirochip Technology Inc's [[website:http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010533]].~ This site is highly recommended for a reference.~ ~ - Instructions~ Please read through whole section carefully before start working on. -- Each part is placed where is should be, and examine the layout and the order of wiring. -- The IC socket for the analog-digital converter and ceramic capacitors are placed. -- The thermometer sensors are put into the place. -- Wire placed parts. The wires, which are going to attach the analog-digital converter are kept longer. These~ wires are connected to the IC socket. Reminder that the voltage converter IC will be mounted and wired later,~ and keep enough room for mounting the voltage converter IC as mounting the parts described here.~ -- Mount the voltage converter IC on the pitch converter board. The pitch converter board are connected to the~ Pin Headers, which are on the expansion board.~ -- All connectors are wired.~ -- Mounted Side 1~ &ref();~ &ref(CIMG8745.JPG,,25%);~ -- Mounted Side 2~ &ref();~ &ref(CIMG8746.JPG,,25%);~ * History of Revision [#df60e7f1] > - 2010/10/28 This article is initially uploaded. - 2010/11/29 The samples are added.
