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SunFounder Sloth:bit, Instruction Manual

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SunFounder Sloth:bit Instruction Manual Download Page 36

32 

 
 

 

VI.

 

Calibrate 

After  assembling  the  sloth:bit,  now  download 
program to sloth:bit thus to command the robot do 
various actions. Maybe the robot is a little strange, the 
reason should be that there exist some deviations in 
the gears. You can calibrate by adjustment. The left 
one is the precise installation one and the right need 
to be adjusted. 

Summary of Contents for Sloth:bit

Page 1: ... include learning kits development boards robots sensor modules and development tools In addition to high quality products SunFounder also offers video tutorials to help you make your own project If you have interest in open source or making something cool welcome to join us About This Kit This cute learning kit utilize blocks and circuit driving connecting rod structure to command the robot to di...

Page 2: ...he related code and view the user manual on LEARN Get Tutorials and watch related videos under VIDEO Free Support If you have any TECHNICAL questions add a topic under FORUM section on our website and we ll reply as soon as possible For NON TECH questions like order and shipment issues please send an email to service sunfounder com You re also welcomed to share your projects on FORUM ...

Page 3: ...VI Calibrate 32 VII Project 37 1 Obstacle Avoidance example 37 2 Voice example 38 VIII What s next 40 1 Resources of boards 40 2 Set gestures 40 3 Pins 41 IX Appendix 43 FAQ 43 The problem of Bluetooth connection 43 Python code is not support 43 Battery 43 Voice sensor environmental thresholds 44 Abnormal of robot actions 45 Contact us 46 ...

Page 4: ...Javascript API 46 PC use micro bit 46 ...

Page 5: ...trolled on pad or cellphone by visual programming software also when downloading program you can connect Bluetooth without cables Different types of sensors are equipped with sloth bit The micro bit board is attached with acceleration terrestrial magnetism and temperature sensor infrared obstacle avoidance and voice sensor are also attached inside Sloth bit robot have reserved several extensibilit...

Page 6: ...y attention to the battery type The first three types are accessible and the last one is unsuitable Because the last one is carbon zinc battery it can just apply in low current Pad Ipad or mobile devices of Andriod are all suitable ...

Page 7: ...e Android market III Getting start with micro bit 1 Search and install micro bit application at the iPad store 2 Power on the micro bit and the power light of the board will be lighten up If the robot is not assembled micro USB wire cable can be used to supply power ...

Page 8: ...3 Then open the Bluetooth on iPad and startup the app that installed just now the interface after opening up is as shown below 4 Follow the instruction of the software guide to connect micro bit with iPad ...

Page 9: ...5 IV Use makecode sloth bit block 1 After connecting successfully tap Home at the upper left side to go back 2 Click the second category Create Code ...

Page 10: ...6 This is the interface of the micro bit visual programming Drag the block and combine them together to compile the program you need ...

Page 11: ...7 ...

Page 12: ...8 2 Click Advanced then click Add Package ...

Page 13: ...9 Search sloth you can see the package we provide Click on the package to add it to the project After the package is added you ll see the sloth on the left side ...

Page 14: ...10 Program with sloth Combine these blocks with on start block After the program is complete click Download and then confirm to download ...

Page 15: ...ore downloading the program you need to press A and B at the same time then press the Reset at the back side until there display Paring at the matrix and release A and B to command the board to pair Bluetooth ...

Page 16: ...t is complete V Assemble the robot Before assembling it is recommended to check whether the servo is normal If there exist any problems you are welcomed to contact with us to change Do as the previous chapter to download and burn the test program into micro bit ...

Page 17: ...13 Afterwards insert micro bit into the long slot of the driver PCB Note the direction if insert in reverse direction the micro bit will not power on ...

Page 18: ...scratching your hands Take out the servos from package Then connect servos with drive board Insert the yellow line of servo into the yellow pin and red into red brown into brown Power on to check whether all the servos can rotate normally If the servo is normal then unplug servos and take out battery and micro bit to continue the assembling of sloth bit ...

Page 19: ...15 Do as shown in the following picture to assemble the acrylic parts ...

Page 20: ... in case of incised wound Because these acrylic plates are cutting there may exist sharp edges cut your finger so be careful Now assemble the rocker arms of servos Take out two Acrylic B and Rocker arm B assemble them with M1 2 4 screw Take out two Acrylic C1 and Rocker arm A assemble them with M1 2 4 screw ...

Page 21: ...le the robot from down to up First is the two feet The parts used here are E D1 and D2 Fix part E and D1 by M3 10 cap screw and M3 nut It looks as shown below after assembling Fix part E and D2 by M3 10 cap screw and M3 nut ...

Page 22: ...18 After assembling it looks as shown in the picture Afterwards insert the hollow rivet into the D2 as shown below ...

Page 23: ...s shown below When assembling note the servos direction the servo cable direction is at the same side with the edge of feet Fix servos by M2 8 screw and M2 nut When the left foot assembled already it looks as shown in the following picture ...

Page 24: ...it should looks as shown in the picture below If you find there are two left feet or two right the reason should be that part E is on the reverse side you need to flip it to the other side Then assemble body part of the robot that is electric circuit and combining between body and feet Because there are servos in the robot thus in the ...

Page 25: ...ow the processes as shown below Assemble two servos into two parts A note the servo assembling direction The side of long hole of part A is the front side the direction of servo cable face to the side of the arrows Fix servos then assemble them by M2 8 screw and M2 nut ...

Page 26: ... post into the acrylic board and assembled by M3 copper standoff and M3 nut Assemble the drive circuit board as shown in the picture When assembling note the direction of the drive board The IR should be toward the front side of part A ...

Page 27: ...23 Then fix the circuit board by four M3 6 screws Insert the micro bit into the slot of circuit board Note the direction of micro bit control board The LED matrix side should be toward the front ...

Page 28: ... When installing the battery be careful of the pin in case of scraping your finger Combine the four servo cables with the interfaces of servo and drive board The orange lines in the picture below are the way recommended to twine ...

Page 29: ...if combining the servo well it will stop at the angle of 90 When installing rocker arms the servo need to be stop at the angle so keep the robot power on is necessary Next assemble the part between leg and foot as shown below and assemble by M3 8 screw and M3 nut ...

Page 30: ...the leg and foot part with leg servo Assemble the rocker arm with servo Assemble the rocker arm in the angle as shown below There may exist a little deviation between servo and rocker arm when assembling finishes ...

Page 31: ...27 Fix rocker arm by rocker arm screw Assemble the bearing with hollow rivet then combining with acrylic plates ...

Page 32: ...he assemble parts together When assembling it s better to distinguish left and right foot clearly also the front and back side of the foot One of the rocker arm need to face the front side of part A As assembling before the foot and the front side of ...

Page 33: ...rt A should be in 90 degree After the rocker arm and servo gear are combined power off the robot Now rotate the feet there will appear the screw hole of rocker arm Fasten the rocker arm screw and fix the leg ...

Page 34: ... the rocker arm gear power it on and keep the servo gear at the angle of 90 After assembling power the robot on and the picture below is what is looks if stand still If your robot stands not straight maybe you need to repeat the processes of assembling rocker arms ...

Page 35: ...31 When all the processes are finishing you need to clean the servo lines and fix by ribbon Then paste the two feet with mats ...

Page 36: ...o sloth bit thus to command the robot do various actions Maybe the robot is a little strange the reason should be that there exist some deviations in the gears You can calibrate by adjustment The left one is the precise installation one and the right need to be adjusted ...

Page 37: ...33 Download adjustment program into micro bit ...

Page 38: ... display Cali on the LED After the display it will come into calibrate mode When the LED is blinking it means to choose the servo that is to be adjusted A B is to change between servo and A B is to ensure the choice ...

Page 39: ...ll come into adjustment mode A B are the values of and A and B is to ensure the choice then blink to display the corresponding servo and the adjustment value Remember these values and fill them into the set offset blocks A B for A B for confirm Right Leg Right Foot Left Leg Left Foot ...

Page 40: ...36 Choose the numbers of adjustment Calibrate the sloth bit as straight as possible ...

Page 41: ...the sloth bit goes forward and detect obstacles in front then the robot turn left for two times after turning if no obstacles in front the robot will goes forward and if there has obstacles the robot will turn left Obstacle avoidance is realized by infrared thus if the size of the obstacle is too small or surface is irregular it may cause the obstacle undetected ...

Page 42: ... Voice example This is an example program of voice do as shown in the picture then download into micro bit When hearing the voice there will display the expression of surprised and do the action of swinging ...

Page 43: ...39 for one time when there has no voice the robot will not move and display the expression of sleeping If the surrounding is too noisy you can enlarge the value of 550 in the on heard over block ...

Page 44: ...uetooth These sensors are helpful to make the sloth bit smarter and complete more interesting programs For example you will see the robot is in the state of felling to the ground by means of acceleration sensor When the robot is felling to the ground you can stop it and even design the action of standing up again 2 Set gestures If these gestures are not enough you can set new by combine blocks The...

Page 45: ... designed as three actions then define a function to combine the three actions together in order and time interval 3 Pins Sloth bit PCB board has several reserved interfaces It can be extended for more functions and DIY hardware by soldering attached pins inside The reserved pins interfaces have the functions as shown below ...

Page 46: ...42 ...

Page 47: ...send to the disc of micro bit by USB thus the Bluetooth transmission can be used again Do not support python code Micro bit visual programming program compile is encouraged to be used surely you can also use Javascript There still has no Python package in sloth bit by this moment Battery There are different types 9V battery because carbon zinc battery can t supply high current thus not suitable fo...

Page 48: ...s of receiving sounds on cellphone If the surrounding is too noisy you need to increase the threshold value of sensors Print out the received voice value by serial write and then set the threshold value higher than surrounding noise according to returned receive values When using the serial port connect micro bit with computer by USB ...

Page 49: ... it must be on 2 Whether the battery is full Check by multimeter if less than 7 5V it means the battery is low 3 Whether the micro bit board is plugged in reverse side the LED should toward IR transmitting valve 4 Whether the micro bit board had downloaded program If not download the program again ...

Page 50: ...vascript API PC use micro bit By makecode to visual programming http microbit org guide quick Program by mu to micropython https codewith mu Micropython language help https microbit micropython readthedocs io en latest ...

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