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PiXtend

Construction manual:

PiXtend V1.3 Full

Kit Assembly

2.3 Resistors and Potentiometer

For the mounting of the resistors we can use attached spacers to make life easier by
“jacking up” the circuit board.
At the four corners of the circuit board the spacers (M3x5 mm with external thread top and
M3x15 mm bottom) get screwed as in Figure 15.

Before assembling and soldering of the resistors can be prepared more:

www.pixtend.de

Copyright by Qube Solutions UG (limited liability)

31 / 75

Figure 15: "Jacking up" the circuit board

Figure 16: Preparing the resistors

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Содержание PiXtend V1.3 Full

Страница 1: ...nstruction manual PiXtend V1 3 Full Kit Assembly Qube Solutions UG limited liability Arbachtalstr 6 72800 Eningen GERMANY http www qube solutions de http www pixtend de www pixtend de Copyright by Qub...

Страница 2: ...ll as the non compliance of the statements from the mentioned data sheets and operating manuals leads to loss of the approval for the European economic area The symbol with the crossed out waste bin m...

Страница 3: ...r 30 2 4 Pin header for Jumper 37 2 5 Diodes 40 2 6 Crystals 43 2 7 Capacitors 44 2 8 Poly fuse 48 2 9 Small Transistors 49 2 10 Big Transistors 51 2 11 Ferrite Inductance 53 2 12 Voltage regulator an...

Страница 4: ...rot brown brown brown 32 Figure 23 680 blue grey black black brown 33 Figure 24 470 yellow violet black black brown 33 Figure 25 270 red violet black black brown 33 Figure 26 120 brown red black blac...

Страница 5: ...es bent 55 Figure 63 Applying the heat conducting paste 56 Figure 64 Voltage regulator with cooling element 57 Figure 65 Voltage regulator mounted 58 Figure 66 Montage of the clamping strips 59 Figure...

Страница 6: ...cluded Please mind that it is only the components for the PiXtend assembly kit and not the optional accessories Information to optional accessories manuals part lists you can find in our download area...

Страница 7: ...00 F 35 V C11 C18 C19 C25 C26 5 Electrolyte capacitor radial RM 2 54 mm 1 F 50 V D1 1 Precision Z Diode LM4040CIZ TO92 5 V 0 1 D2 1 Transil diode P6KE36CA RM 12 7 mm 36 V D3 D4 2 Schottky Diode SB340...

Страница 8: ...14 Pin DIP JP1 1 Female connector dual rowed 2 54 mm 2x4 Pole JP2 1 Pin header dual rowed 2 54 mm 2x13 Pole JP10 J11 J12 J13 J14 J15 J16 J17 1 Pin header 2 54 mm Note there are 2x36pol pin headers in...

Страница 9: ...R49 R52 R53 R61 R63 R106 R107 R108 R109 R112 R113 R114 R115 35 Metal layer resistor 1 4 W 0207 10 k 1 R103 R105 2 Metal layer resistor 1 4 W 0207 3 3 k 1 R15 R16 R17 R18 R19 R23 R24 R72 R73 R74 R75 R...

Страница 10: ...Piezoelectric crystal HC49U S 20 MHz XTAL3 1 Piezoelectric crystal Clock crystal TC38 32 768 kHz 1 IC Socket for IC1 40 Pole 1 IC Socket for U1 18 Pole 2 IC Socket for IC4 IC6 16 Pole 2 IC Socket for...

Страница 11: ...Labelling on the board Count Description Value 8 Spacers with external thread M3x5 mm 8 Spacers M3x15 mm 4 Screw cross recess M2 5x6 mm 1 Screw spacers M3x6 mm 1 Heat conducting paste 1 g www pixtend...

Страница 12: ...PiXtend Construction manual PiXtend V1 3 Full Kit Assembly www pixtend de Copyright by Qube Solutions UG limited liability 12 75...

Страница 13: ...PiXtend Construction manual PiXtend V1 3 Full Kit Assembly www pixtend de Copyright by Qube Solutions UG limited liability 13 75...

Страница 14: ...ess a part should be missing so write us an email info pixtend de and we look immediately that you get a free forwarding Please do not send back the whole PiXtend kit if only one part is missing This...

Страница 15: ...values and quantities are shown in the previous list 1 Electrolyte capacitors 2 Poly fuses 3 Ceramic capacitors 4 Resistors 5 Potentiometer rotation axes 6 Heat conducting paste www pixtend de Copyri...

Страница 16: ...0 Screws 21 Jumper 22 Small signal transistors 23 crystals Please consider The colour and form of small parts can change We can t guarantee that the components will always look the same as in the over...

Страница 17: ...er 6 Desoldering wick 7 Solder 0 5 mm 1 mm Furthermore it is needed a soldering iron with a head which is thin enough to solder circuit boards Usable soldering heads are shown in Figure 3 A common mul...

Страница 18: ...PiXtend Construction manual PiXtend V1 3 Full Kit Assembly www pixtend de Copyright by Qube Solutions UG limited liability 18 75 Figure 3 Usable soldering heads...

Страница 19: ...ely read and understood If the components once are changed or soldered an exchange or return is impossible Please do all soldering forming and wiring conscientiously The result will pay your effort An...

Страница 20: ...ime to avoid careless mistakes and the consequential rework We recommend the following order at placing and soldering 1 IC Socket 2 Light emitting diodes LEDs 3 Resistors and Potentiometer 4 Pin heade...

Страница 21: ...s a short A short circuit can damage the battery and the board All components are getting placed on the top side of the PiXtend board and soldered on the bottom side The top side can be recognized at...

Страница 22: ...Hold the socket before turning the board By bending two opposing pins on the bottom side the socket can t fall out see Figure 5 Tip for advanced users Also you can put in all sockets together and hol...

Страница 23: ...The bending of the opposing pins can be done with the fingernails or with a screwdriver Figure 6 shows the circuit board with all sockets www pixtend de Copyright by Qube Solutions UG limited liabilit...

Страница 24: ...soldering iron now Begin with soldering of the already bent pins of every socket It is not to recommend to solder all pins immediately www pixtend de Copyright by Qube Solutions UG limited liability...

Страница 25: ...h one hand the socket on the circuit board and alternate warming the two pins with the soldering iron from the other side only short time Do this with every socket if they are not lying flat Attention...

Страница 26: ...pin is the anode The anode is marked with a on the circuit board The light emitting diodes are put in the board one after another For the fixing before the soldering it is enough to bend the two conn...

Страница 27: ...typical position of the LEDs after soldering Not all LEDs lie good or are crooked Because of this reason we soldered only one pin Use the same method as with the IC Sockets and press the LED on the b...

Страница 28: ...e damaged After aligning the LEDs all the second pins can be soldered If it is not important for you if the LEDs are straight or not so you sure can solder all pins at once and go on with the next ste...

Страница 29: ...the LEDs it s only to shorten the connection wires with a cutter Figure 13 Cut the wires near the soldering joint Then short circuits between the connection can be avoided best www pixtend de Copyrig...

Страница 30: ...d Construction manual PiXtend V1 3 Full Kit Assembly Your PiXtend board should look now as following www pixtend de Copyright by Qube Solutions UG limited liability 30 75 Figure 14 Sockets and LEDs mo...

Страница 31: ...jacking up the circuit board At the four corners of the circuit board the spacers M3x5 mm with external thread top and M3x15 mm bottom get screwed as in Figure 15 Before assembling and soldering of th...

Страница 32: ...with the colour code If you don t have a multimeter you can align the colour codes of the resistors with the following pictures Easiest the colours can be seen at daylight or under a bright light You...

Страница 33: ...yright by Qube Solutions UG limited liability 33 75 Figure 18 47 k yellow violet black rot brown Figure 20 10 k brown black black rot brown Figure 19 30 k orange black black rot brown Figure 21 3 3 k...

Страница 34: ...utions UG limited liability 34 75 Figure 23 680 blue grey black black brown Figure 24 470 yellow violet black black brown Figure 25 270 red violet black black brown Figure 26 120 brown red black black...

Страница 35: ...of one type and then solder the first pins The resistors can be placed and fixed in the same position Figure 29 T some places it is better to place the resistor and fix it directly by a soldering join...

Страница 36: ...side it should be checked if on the already fixed connection wires the solder flew down through the hole If not the soldering point can be heated again and feed with more solder if necessary The conn...

Страница 37: ...fixed again if necessary The other pin of the potentiometers can afterwards be soldered easily on the bottom side The spacers are getting removed again and put aside through the final assembly www pi...

Страница 38: ...one piece can be broken Grab with your fingers as near as possible to the predetermined breaking point or the plastic maybe will break at another point as wanted Following lengths are needed 1x 24 Pi...

Страница 39: ...e Because the headers don t hold from alone it always is getting one piece put in the board hold and turned That the loose put pin header doesn t fall out something has to be laid under We use the ben...

Страница 40: ...the position has to be checked Figure 37 shows a correct positioned 90 to the board and neatly resting pin header 24 pole After the positioning all other pin can be soldered This process is getting r...

Страница 41: ...4 BAT41 RM 7 62 mm 5 LM4040CIZ TO92 housing The here named dimensions should serve as orientation If you don t own a bending aid it is not necessary to exactly bend it to the tenths millimetre The ben...

Страница 42: ...e P6KE35CA diode has no defined mounting direction It doesn t matter in which direction this component will be mounted With the diodes it is the same procedure as with the LEDs Insert bend connection...

Страница 43: ...with a screwdriver The LM4040 diode has a special structural shape TO92 housing For preparation the pin in the middle has to be bend about 1 2 mm back in direction of the round housing part like it is...

Страница 44: ...e you don t have to look for the polarity The 20 Mhz crystal depends to the CAN Controller to the microcontroller the crystal with 16 MHz The round clock crystal is giving the time for the real time c...

Страница 45: ...1x 100 uF 4 5x 1 uF At electrolyte capacitors it must be cared for the polarity The longer connection wire is the plus pole The minus pole is marked by a white stripe as shown in Figure 46 www pixtend...

Страница 46: ...ction wires have to be bend closely to the component how it s shown in figure 47 Please here too take care of the polarity Additional to the marking of the plus pole on the printing of circuit board t...

Страница 47: ...n t matter For the rest go on as until now Caution Danger of mix up with the fuses in the following chapter The colours and forms of the capacitors can variate The ceramic capacitors can be differenti...

Страница 48: ...a tool or something else at one side of the board The placement of the board is gone far already If you are not sure that you have done all steps well so you can compare it with picture 51 www pixtend...

Страница 49: ...s can variate But they can be differentiated by the size and the quantity easily The big 3 A fuses are one of the highest components on the circuit board If later the PiXtend metal housing should be u...

Страница 50: ...t has straight connector pins which have to be bent up with the pliers a bit Direct touching of the connection wires with the hands should be avoided By electrostatic load the transistors can be damag...

Страница 51: ...ermined mounting direction which is marked by a round and a flat side of the plastic housing The form of the housing is printed on the circuit board and easy to recognize www pixtend de Copyright by Q...

Страница 52: ...igure 57 Are the transistor standing to hight in the board it can lead to problems with the montage of the metal housing later It is to look for the mounting position On one side the component has a f...

Страница 53: ...of each component it can be adjusted again and if necessary put it deeper through the board After that the rest of the connection wires are getting soldered and cut with the cutter The transistors sh...

Страница 54: ...can be soldered and fixed from above same as the resistors The coil can have different construction forms that s why there are different drills for the different grid dimensions It only must be solder...

Страница 55: ...oil But before the soldering the coil should be pressed down to the board as far as possible flat lying on the circuit board Figure 60 It mustn t be cared of the polarity at ferrite and coils www pixt...

Страница 56: ...In this process will be applied heat conducting paste too The following pictures show the montage The connection wires are getting bend at 90 near the housing with the plat pliers The completely bent...

Страница 57: ...a thin layer of paste Much helps much is wrong here More heat conducting paste as on the picture should not be applied In the assembly kit is included a M3x6 mm screw With this one the voltage regulat...

Страница 58: ...ause it can lead to short circuits As last step the pre mounted voltage regulator with cooling element has to be placed on the circuit board The cooling element should lie flat on the circuit board ww...

Страница 59: ...ed if on the top side or the bottom side of the board are short circuits between the pads pins If necessary remove the unwanted connections with de soldering wick or with a de soldering pump Check her...

Страница 60: ...ering something can be underlay again The plug connectors and clamping strips should be plugged as deep as possible always and lie neat on the circuit board If later wires are getting connected here o...

Страница 61: ...out while turning the circuit board hold them and use if necessary something to underlay We recommend to solder only two opposing pins of each relay that it is possible to adjust the position again Or...

Страница 62: ...e a compliment Now you have your assembly kit on the level of a ARTC assembly kit Almost Ready To Control and with big steps you come near to the completion of the PiXtend board www pixtend de Copyrig...

Страница 63: ...pressed against a hard surface until the wanted angel is reached Like that all Pins of each IC are getting bent equally After bending the pins should have an angel of 90 to the plastic housing how yo...

Страница 64: ...ly Some Chips have no notch they have a point Picture 71 shows the correct positioning www pixtend de Copyright by Qube Solutions UG limited liability 64 75 Figure 70 Correct positioning of an IC with...

Страница 65: ...sitions of the Potentiometer R60 and R62 without any tools Even when it functionally makes no different do we recommend to put the arrows in the rotation axes in the same orientation That helps at adj...

Страница 66: ...now Take some minutes time to check to bottom side of the circuit board Are all components soldered neatly Are there unsoldered pads if necessary resolder Are all connection wires shortened if necess...

Страница 67: ...remove the contact Are all ICs electrolyte capacitors diodes etc mounted in the right direction if necessary desolder unmount turn and solder again If you are pleased with the soldering joints and the...

Страница 68: ...mm spacers In the middle of the circuit board are six more drills Four of them are used for the montage of the Raspberry Pi model B 2 B 3 B The rest of the drills are normally not used they are for th...

Страница 69: ...EN The most important jumper For standard operation this one has to be placed all time Without this jumper the Raspberry and the PiXtend can t communicate Jumper next to RS485 or CAN clamps with the l...

Страница 70: ...it is not allowed to connect another power supply to the Raspberry Pi The possible compensation currents between the both power supply units can lead to malfunction overheating of components or even...

Страница 71: ...t Assembly PiXtend now is ready for the marriage with the Raspberry Pi Model 2 B The following steps are valid equally to the model 3B B www pixtend de Copyright by Qube Solutions UG limited liability...

Страница 72: ...g it wrong For the beginning the cable is getting bent away from the PiXtend board Figure 78 that it doesn t disturb at the montage of the Raspberry As next step the Raspberry Pi can be screwed on the...

Страница 73: ...ep now the 40 pole side of the cable can be connected to the Raspberry Pi Take care that the connector is pushed down straightly to avoid bending of the pins www pixtend de Copyright by Qube Solutions...

Страница 74: ...PiXtend Construction manual PiXtend V1 3 Full Kit Assembly www pixtend de Copyright by Qube Solutions UG limited liability 74 75 Figure 80 Flat ribbon cable connected to the Raspberry Pi...

Страница 75: ...oad Area of our Homepage Please take note of the hints and tips in the initial operation manual before you connect the PiXtend with a voltage supply the first time Do you need help at any point of thi...

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