YELLOW BOX
Contents
1. USB battery check 2 8V min 1 3V gt to main screen Image 1 The YELLOW B0X s menu structure 4 1 IC tests There are three tests to either find all sensors attached to a bus or to show the measurement values of the sensors The voltage applied to the sensors is 3 3V and the I C bus speed is 20kbps as in the SOL device 4 1 1 Find sensors This function scans the bus for connected sensors SHT 1 means that one SHT 21 sensor has been found on the bus whereas SHT 0 means that there is no such sensor connected to the bus Since this sensor has a fixed address on the I C bus there is no need to show the sensor s address Connected TMP275 sensors are displayed with their address The screen below shows such sensors at the addresses 70 1 70 3 70 7 and 70 8 which is 71 73 77 and 78 SHT 1 TMP 70 1 3 7 8 4 1 2 Check CINC sensors All four measurement values of the four TMP275 sensors in a CINC module are presented on the display and updated twice per second Currently the temperatures are being rounded to 0 5 C Missing sensors shown up as a question mark RT means Room Temperature in the cooled air channel HT means Heated Temperature of the aluminium plate T_C means TEC Cold the cold side of the Peltier element and the following H means the hot side of the TEC all values in C RT 225 HT 37 0 T_ 13 0 H 32 5 page 4 of 8 pages User s manua2. connection YELLOW BOX will respond with quit and go to the main screen 5 Available serial commands To see a list of all available commands type h or A list of all commands will be presented in the terminal window see Image 3 Windows and its OS names are registered trademarks of Microsoft Corporation US page 5 of 8 pages User s manual YELLOW BOX I2C Testadaptor help RS232 commands f gt find and list all connected sensors c c gt measure CINC temperatures once Ss s gt measure SRDR temp rh once sn cn gt log CINC or SRDR temp rh every n sec n 1 120 n gt numbers only in output table default gt units and identifiers too in output table gt local mode unlock joystick in log mode gt switch backlight on gt switch backlight off gt quit to main menu gt report firmware version gt report device serial number h gt show this help screen v5 lt QO TFC Image 2 List of available commands 5 1 The find command Typing f changes to the find sensors screen as described in chapter 4 1 1 and puts out a text like the following in the terminal program find sensors SHT21 1 TMP275 A address 71 73 77 78 Also here it only shows if an SHT21 sensor is connected and puts out the addresses of the found TMP275 sensors 5 2 The c cn command Typing c changes to the CINC sensor values scr
3. 00000DO a hat gf z YELLOW BOX 7 back 7 enter off on ZWWEN down 2 Image 3 The two I C connectors on the PCB lC Testadaptor seen from the bottom side Tests Texas Instruments TMP275 and Sensirion SHT21 sensors For a manual visit zww ch i2c serial number 07 N The signal assignment is E Image 4 The two EC cables pin wire number signal at the device 1 3 3V 2 SCL 3 SDA 4 GND 5 GND 6 GND Micro MaTch is a trademark of Tyco Electronics group US gt Micro Fit is a trademark of Molex Inc US page 8 of 8 pages
4. SRDR output table see below The device responds with units and identifiers in output table Whereas the table shown above now looks like this CINC sensors sampling rate 1s RT 23 0 C HT 34 0 C TEC_C 17 5 C TEC_H 28 0 C RT 23 0 C HT 34 0 C TEC_C 17 5 C TEC_H 28 0 C RT 23 0 C HT 34 5 C TEC_C 17 5 C TEC_H 28 5 C RT 23 5 C HT 34 0 C TEC_C 17 5 C TEC_H 28 5 C o To switch back to the output table format without identifiers and values enter n and the device responds no units and identifiers in output table 5 4 The s sn command The s command is the equivalent to the c command but for SRDR sensors Typing s 1 changes to the SRDR sensor values screen and puts out the measured values once here shown with units and identifiers in the output table u command SRDR sensors RT 25 5 C RH 58 9 TEC_C 15 5 C TEC_H 30 5C Missing sensors are also reported with a question mark and a table can be put out the same way as with the cn command the u and n command work again as described in section 5 3 5 5 The I command With the sn and cn command YELLOW BOX switches to remote mode which means that the joystick is being locked to prevent from accidentally interrupting the data output 1 unlocks the joystick switches back to local mode but an ongoing output cn sn commands continues The device also switches back to local mode
5. User s manual YELLOW BOX 1 C testadaptor for Texas Instruments TMP275 and Sensirion SHT21 sensors Get this manual and more at zww ch i2c zww ch Tobias Zurcher Alte Feldeggstrasse 12 8008 Zurich User s manual YELLOW BOX Table of contents Tas INTTOQUCION E E EEA EAE E E NEEE tddi 3 2 What can YELLOW BOX dO occ ccccccccsscscssesesscsscsecscsscsececsscsececsscsececsscsececsscsecscsacsececacsecseacseees 3 3 Switching the device on and off 2 cece cseeeeseseseeeeseeesseseseeecsenesaescseeecaeneeataeeececaeseeaeeeeeeeeaeeees 3 4 lt The Menu Structure iS Deets eae een eee 3 Air ECES ee Ne aR aT ROME CaN OR Er en a u Sr nen 4 4 1 1 FUNG SOMSONS oi a Deren alone E ceed 4 4 1 2 Gheck EINE sensors 2 2 ess 4 4 1 3 Check R SR DR S SOS 2 2 is 5 4 2 ST GS se esses E E A E E T 5 4 3 Battery Check cirio ee n AA EE R EA dico 5 4 4 Setting up the communication over the USB interface cece ce ceeneeneeeeeeeeeeneeens 5 5 Available serial commands nessuna a a ne e nono nonn ea aeai 5 5 1 The find command iio Et al bids AN R Siss 6 5 2 The een commandi iii Aa Ed dl A Bee A EAE 6 5 3 The UL mn command iii it ia da lada idad EEE 7 5 4 Thes 2Sn command 4 2 32 2282 8 83 Keen ncaa Sides EE E en 7 5 5 The commMand 2 2 2 Bec eect 45828248212 engen ana nik hie 7 5 6 The Dd 0 COMMAND E dl Ohba AAA E abad 7 5 7 The g comMmMand 2 2 2 2 222 2 Je 2222 amp 222 22 Bann Hagen Mah
6. can operate down to this voltage At lower voltage levels NiMH batteries could be damaged because of a too deep discharge level 4 4 Setting up the communication over the USB interface The built in USB interface is an FTDI FT232R chip Today s Windows versions recognize this chip and automatically install the appropriate device driver However drivers for Windows Mac and Linux can also be found on the internet Go to ftdichip com gt drivers gt VCP drivers To communicate with the device a terminal program is required Windows Vista 7 don t come with such a program anymore but a good alternative can be found here https sites google com site terminalbpp Other alternatives are Hyperterminal Private Edition TeraTerm Putty and Realterm After connecting the YELLOW BOX to the computer and installing the drivers a new COM port with a higher number as the system s built in COM ports will be available in the terminal program The new COM port can also be found in Control panel gt Hardware and Sound gt Devices and Printers as FT232R USB UART Properties shows the number of the added COM port For the communication standard parameters have been chosen 9600bps 8 data bits 1 stop bit no parity no handshaking These values have to be set properly in the terminal program to make the communication run To test the communication send a q followed by the enter key q2 over the serial
7. een and puts out the measured values once CINC sensors RT 22 5 C HT 37 0 C TEC_C 13 0 C TEC_H 32 5 C A missing sensor is reported with a question mark RT HT 37 8 C TEC_C TEC_H The n in the cen command stands for a number between 0 and 120 With 0 the command does exactly the same as above but with other values it puts out the measured data every n seconds To provide easy copy paste to a spreadsheet program like Excel units are only shown in the header of such an output table For example c2 puts out CINC sensors sampling rate 2s RT C HT C TEC_C C TEC_H C 23 0 34 0 17 5 28 0 23 0 34 0 17 5 28 0 23 0 34 5 17 5 28 5 23 5 34 0 17 5 28 5 Excel is a registered trademark of Microsoft corporation US page 6 of 8 pages User s manual YELLOW BOX The output can be stopped with the q quit command Because most users want to use the data in a spreadsheet program afterwards this is the default output format Anyhow as soon as the header is being pushed out at the top of the terminal program because the table length exceeds the program s window height this table is rather meaningless if the user only wants to monitor the output in the terminal program That s why there is a u command 5 3 The u n command Typing u forces YELLOW BOX to put out units and identifiers in the output table This influences the en CINC output table and the sn
8. l YELLOW BOX 4 1 3 Check SRDR sensors An SRDR module accommodates one SHT21 sensor and two TMP275 sensors Again the display is updated twice per second and the temperatures of the TMP275 sensors are being rounded to 0 5 C missing sensors shown up as a question mark RT means Room Temperature in the cooled air channel RH means Relative Humidity in of the cooled air T_C means TEC Cold the cold side of the Peltier element and the following H means the hot side of the TEC all temperatures in C RT 23 0 RH 55 6 T531H4323 4 2 Settings The display contrast can be set in the corresponding screen by pushing the joystick stepwise up and down Leaving this screen stores the value in the internal EEPROM to keep the set value In the backlight mode screen the display s backlight can be switched off on or always on The last setting means that the device stores the mode and starts up always with the backlight on while with the on setting the device starts up without backlight next time These settings can be made in battery powered mode although the backlight is only powered in USB powered mode This is because the required current of 60mA is quite a lot for the batteries and the voltage of weak batteries could drop that much that the device immediately switches off 4 3 Battery check The battery voltage is being measured and displayed min 1 3V says that YELLOW BOX
9. oes 7 5 8 The y CONTAINING rics ees saves a AA a o a eA ED 8 5 9 The F COMMANG iii A ia aia 8 5 10 The or h command iii dd da Ed 8 6 The YELLOW BOX S CONNEeCctiONS o oonononnnnnoninncnnconanncnnnanoninonccnncanan cono none rononconnrnan cono caneranonecnnss 8 Document versions creation date author remarks changes 2011 08 06 Tobias Ziircher initial version User s manual YELLOW BOX 1 Introduction In the Tecan SOL device all temperatures and humidities are being measured by sensors with an PC bus Since all these sensors come calibrated out of the box and since they can be read digitally there is no need and also no possibility to calibrate them or the attached electronic The read measurement value is unaffected by the cable length or the wiring On the other hand the sensors can t be checked with a standard multi meter This is where you need YELLOW BOX 2 What can YELLOW BOX do YELLOW BOX can find up to eight Texas Instruments TMP 275 sensors because of eight different possible addresses and one Sensirion SHT21 sensor because its address can t be changed YELLOW BOX can show all the temperatures and the humidity of the sensors built in a SOL CINC or SRDR module YELLOW BOX can be connected to a computers USB port and controlled via a terminal program to log the measured data every 1 120 seconds 3 Switching the device on and off P
10. ut two AA sized batteries in the enclosure on the back side Any type including rechargeable batteries will work and also weak batteries down to a common voltage of 1 3V e g 0 65V per cell due to the use of an internal voltage booster The device just switches off at too low voltages To switch on the device push the joystick to the right and then as it says on the display up and down This is to prevent the device from being switched on accidentally Now we see the main screen where the device can also be switched off again by a left push 12C testadaptor V1 0 zww ch Connecting a powered USB cable to the device switches it on immediately and it also can t be switched off in this mode With inserted batteries it stays switched on after removing the USB cable but can be switched off again with a left push in the main screen 4 The menu structure YELLOW BOX s tiny menu structure is shown in Image 1 The arrows show how to navigate between the different functions Section 4 describes all the functions in this menu PC bus is a registered trademark by NXP formerly Philips Semiconductors page 3 of 8 pages User s manual YELLOW BOX to batt check gt switch off an main screen 12C tests SHT 1 TMP 70 check CINC RT 22 5 HT 37 0 sensors T_C 13 0 H 32 5 check SRDR RT 23 0 RH 55 6 sensors T_C 13 5 H 32 5 settings set backlight mode current contrast 3 backlight mode always on
11. when it gets disconnected from the computers USB port 5 6 The b o command The display s backlight can be switched on b and off o remotely as an indicator or to support the advent season 5 7 The q command Typing q in the terminal program stops an ongoing output and sets the device to its main screen page 7 of 8 pages User s manual YELLOW BOX 5 8 The v command With a v YELLOW BOX puts out its current firmware version firmware V1 0 5 9 The r command Upon this command the serial number of the device which is also shown at the bottom of the enclosure s inscription serial number 11 is being put out serial number 11 5 10 The or h command As already described in section 5 YELLOW BOX puts out a list of all its commands by typing or h in the terminal program see Image 2 6 The YELLOW BOX s connections The PC bus is brought out on two Micro MaTch connectors on the YELLOW BOX s PCB It is physically the same PC bus on both connectors Equipping an attached cable with a Micro MaTch connector and the other cable with a Micro Fit connector enables the user to test both the sensor equipped PCBs and SOL CINC or SRDR modules Image 3 shows the location of pin 1 and 6 on the PCB and Image 4 at the cables coming out of the enclosure a Ua U4 la ts Gam Br o0000000000000
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