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4tronix Pi2Go Lite, Soldering

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4tronix Pi2Go Lite Soldering Download Page 18

  

 

Use the 6mm M3 screws to screw through the ball caster, through the line follower PCB and 
into the pillars 

  

 

Prepare the items required to mount the motors: 

•

 

2 motors with wires and capacitors ready soldered 

•

 

4 motor mount PCBs 

•

 

4 M3x25mm screws 

•

 

4 M3 nuts 

Summary of Contents for Pi2Go Lite

Page 1: ...to some parts of the build v1 0 initial release Yellow v1 1 from 20th October 2014 Yell0w v1 2 and later from 15th November 2014 Orange Soldering the Line Follower PCB 1 Check you have the correct parts PCB 2 x 330R resistors Orange Orange Brown 2 x 220R resistors Red Red Brown Diode 2 x LEDs Green Red 2 x IR reflectance sensors 6 pin male header ...

Page 2: ...2 Solder the diode black line away from the connector 3 Add the resistors ...

Page 3: ...4 Add the LEDs Long leg next to the sign on the silk screen ie long leg away from centre of PCB 5 Add the reflectance sensors to the bottom of the PCB Blue LED at the edge of the board as shown ...

Page 4: ...6 Solder the male header to the top of the board Ensure it is soldered perfectly vertical ...

Page 5: ...ed 2 x 10K resistors Brown Black Orange 2 x 56K resistors Green Blue Orange Diode 1N5817 2 x 470uF capacitors 6 x LEDs Green Red 4 x White 100uH coil Ultrasonic sensor 2 x IR reflectance sensors 2 pin mini tact switch Toggle switch 3x2 male header 2 of these for v1 1 2 x 6 pin female headers 26 pin GPIO header 3 x 2 pin screw terminals 2 x 0 1 2 pin jumpers v1 1 only 2 x 100nF capacitors small yel...

Page 6: ...he resistors in the block near the motor driver chip For tidiness keep all the gold bars at the same end 10 Add the 1N5817 diode Ensure the silver stripe is towards the centre of PCB 11 Add LEDs at front of board Red is for port as in the wine left Green for starboard right And 2 white LEDs Ensure that the long lead of each LED goes into the position marked with a on v1 0 the sign has missed the e...

Page 7: ...e 13 Add the 2 pin tact switch 14 Add the two 470uF capacitors ensuring long lead towards centre of board grey strip on case towards outside of board Keep the 100uH coil to one side as it is better to leave this until last as it is quite tall Now open the bag of headers and switches ...

Page 8: ...heel encoder add on pack is fitted For v1 1 add the 2 blue jumpers in the leftmost positions for line followers or rightmost positions for wheel sensors For v1 2 we have replaced the 3x2 headers and 0 1 jumpers with a miniature slide switch as shown below The position of the jumpers v1 0 and v1 1 should be as shown below Put both jumpers to the left for line following and to the right for wheel se...

Page 9: ...older the sensors in the front corners Ensure you solder the top and the bottom of the board and that the blue LED is to the left as looking at the photo above Note If you are using the wheel sensors now is a good time to head over to the build instructions for wheel sensors ...

Page 10: ...male connector to the bottom of the PCB Ensure that it is mounted perfectly vertical as it is used to connect to the line follower board Solder one pin then adjust the position with one hand whilst keeping the solder melted with the other 3 hands helps here 20 Add the toggle switch to the underside of the PCB at the rear This is the On off switch ...

Page 11: ...Sometimes we receive a batch of ultrasonic sensor modules where the header is on the same side as the sensors Do NOT fit these Contact us immediately for a replacement If these are fitted they will interfere with the mounting pillars and may cause a short circuit 22 Finally solder the coil in place The PCB is now fully soldered ...

Page 12: ...ors one from each terminal to the case This is trickier to do so leave off if you are not sure about it When we solder the kits we add all three capacitors as shown below 2 The Red wire and Black wire should be connected as shown or the motors may run backwards in the example scripts Motor Step 1 Identify the Parts For each motor we provide 1 capacitor1 a red 5cm lead and a black 5cm lead You can ...

Page 13: ...apacitor through the metal terminals and solder as shown It doesn t matter which way round it is fitted Then clip the leads short being careful not to clip off the motor terminals Motor 3 Add Second Third Capacitors Optional Not Provided ...

Page 14: ...red the other 2 capacitors should be soldered between one motor terminal and the metal case as shown above You will need a hot iron to heat up the case sufficiently to melt the solder Then clip the leads short ...

Page 15: ...short end and a long end The short end should be soldered to the motor 2 Solder the Red wire to the top terminal and the Black wire to the bottom terminal as shown above If you solder them the other way round the Pi2Go Lite will run backwards ...

Page 16: ...berry Pi mounting position you will need a 20mm M2 5 pillar an 8mm countersunk screw and a 3mm spacer For the Model B you will require 2 sets and for the Model B you will require 4 sets Here we have mounted 2 pillars in the correct positions for a Model B Screw the countersunk screw through the PCB from the bottom through the spacer and into the 20mm metal pillar ...

Page 17: ...the main PCB using 2 of the 6mm M3 screws Push the female header onto the male header on the line follower board then push the completed assembly into the female header on the underside of the main PCB The holes in the line follower PCB should then line up with the pillars and the line follower board should lie flush with the top of the pillars ...

Page 18: ...o screw through the ball caster through the line follower PCB and into the pillars Prepare the items required to mount the motors 2 motors with wires and capacitors ready soldered 4 motor mount PCBs 4 M3x25mm screws 4 M3 nuts ...

Page 19: ...Pass the 25mm screws from the outside through one mount through the motor and then through the second mount Screw into the M3 nuts on the inside Repeat for both motors Red wires should be screwed into the terminals marked with a and the black wires into terminals marked with a This gives a Red Black Red Black arrangement ...

Page 20: ...ld look like this To mount a Model B you will need an extended GPIO header and 2 x 5mm male female pillars To mount a Model B you will need also need 2 x 4mm countersunk screws For the B use the screws for two front mounts and the 5mm male female pillars for the two rear mounts ...

Page 21: ...ush the Raspberry Pi onto the extended header Ensure that the mounting holes in the Pi match the pillars If not check that the GPIO header is plugged into the correct position Now use 2 4mm countersunk screws to fit the battery holder into position screwing into the 5mm male female pillars that hold the Pi For the Model B the battery holder is mounted as shown above For the Model B it is mounted c...

Page 22: ... pillars that hold the Pi For the Model B the battery holder is mounted as shown above For the Model B it is mounted cross wise near the rear of the unit and offset to allow access to the 6 pin I2C breakout header Fit the red wire from battery holder into the position nearest the switch marked VBAT The black wire goes into the position next to the motor ...

Page 23: ...Your Pi2Go Lite is now Complete ...

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