The file 'Micro Robot Arm 3D Printer Model' is (stl,pdf,xml,step,3mf,ino) file type, size is 3.9MB.
This is essentially a repackaging of the micro robot arm project by bentommye (thing:34829) with other remixes, Holgero (thing:6508) and Ajaxjones (thing:2375913). The original design used an IR remote to control the arm movements and allow for a user to program up to 16 sets of movements for each servo. Once power was removed, all the arm movement programming was lost. I added an SD card module and revised the Arduino programming to allow for saving up to 10 files of movement data with the ability to load a selected file of data back to the Arduino. I also changed the servo controller to an inexpensive 16-channel PWM servo controller, like available from Adafruit. The addition of the SD library along with all the other libraries resulted in exceeding the memory available of an Arduino UNO (32K). Therefore, I switched to an Arduino Mega 2560 Pro processor board which is smaller than an UNO but has 256K of memory. These are available for about $11 (AliExpress).
I was making this project as an Xmas present for my grandson for him to assemble himself. Therefore, I wrote up a detailed set of instructions which is the instructions.pdf file.
I included all the files that I used from the various other projects noted. The instructions specify which ones I used. You can use the openscad version, the original version with gripper and foot remixes, or any combination you choose. I would suggest reviewing the other projects as well as the comments of those projects.
You will find that the Arduino programming provided is considerably different because it uses a servo controller board, uses a Mega 2560 Pro processor board, uses a Micro SD card module, and a different IR remote from the original version.
Because of the change of the electronic components, I designed a different container to hold the electronics with mounting studs accordingly. There is also a lid that simply snaps on as the tolerances on my printer are pretty good. I modified the LCD enclosure by drilling a hole and added a grommet for feeding the wires out of the LCD enclosure. I hope to redo that enclosure as it really needs some screws to stay closed as the original design of press fit was insufficient.
Again, see the instructions.pdf for assembly.
| ArmFront_v3_-_mm.stl | 71.4KB | |
| Arm_v4_-_mm.stl | 107.3KB | |
| Arm_w_spring_-_mm.stl | 123.9KB | |
| Foot.stl | 144.9KB | |
| gear_Remix.stl | 193.1KB | |
| gripper_Remix.stl | 259.5KB | |
| Instructions.pdf | 976.0KB | |
| IR_Sensor_Module.xml | 2.7KB | |
| LCD-1602_back.stl | 1.5MB | |
| LCD-1602_front.stl | 1.4MB | |
| LCD-1602_holder-1.stl | 1.3MB | |
| LCD-1602_holder-2.stl | 699.9KB | |
| LCD_1602.xml | 4.1KB | |
| MicroRobotArm-Lid.step | 45.0KB | |
| MicroRobotArm.3mf | 2.5MB | |
| MicroRobotArmCode.ino | 16.4KB | |
| MicroRobotArmV2-Base.step | 386.0KB | |
| PCA9685.xml | 4.6KB | |
| robot_arm_foot.stl | 114.4KB | |
| SD_Card_Module.xml | 3.3KB | |
| SwingNew.stl | 90.6KB | |
| UNO_R3_USB-C.xml | 7.9KB | |
| wingnutm4.stl | 14.9KB |
