Imported from GitHub: neutronztar/Pivot · commit 6f426fc · license GPL-3.0

Description

A robotic art project

README

Pivot

Pivot is an open source robotic art piece similar to Mark Setrakian's Axis 1 and 2. Here is a video about how I designed and built it

Bill of Materials

General Parts

Part	Quantity	Approx Price	Total	Notes
LX-16A Servo	15	$20	$300	You also need the wires and plastic mounting rings that come with these.
JoyStick	1	$21	$21
2 x 0.4 x 8 mm Machine Screws	400	$0.0946	$38	Exact qty is 300, but you should get some extra.
12V Power Supply	1	$7	$7
AC Power Connector	1	$7	$7
PETG Filament	1kg	$23	$23
Plaster of Paris	1	$10	$10
Round Power Switch	1	$3	$3
Power Connector	1	$7	$7

PCB Parts

Part	Quantity	Approx Price	Total	Notes
ESP32 DevKit	1	$7	$7
8V Buck Converter	1	$7	$7
5V Buck Converter	1	$11	$11
Molex Spox 3pin Connectors	5	$0.26	$1.30
1000uF Electrolytic Cap	4		$15
10uF Electrolytic Cap	1
Tri-State Buffer: SN74LS241N	1	$9	$9
Logic Level Shifter SMD: TXS0108EPWR	1			JLC
1k Resistor SMD: 0603WAF1001T5E	1			JLC
10k Resistor SMD: 0603WAF1002T5E	1			JLC
100nF Cap SMD: CC0603KRX7R9BB104	2			JLC

3D Printed Parts

Part	Quantity
tip.STL	5
fingerA.STL	5
knuckle.STL	5
palm.STL	1
mid.STL	1
base.STL	1

Approximate Grand Total: $466

The Code

To make this machine do its magic, every ".py" file in the root of the "MicroPython" directory must be uploaded to the ESP32. I used the utility "rshell" to do this. Also the ESP32 must first be loaded with a MicroPython binary (tested on v1.17).