HardLabs

RS64c PS

lhm0·rotating_sphere·rotating_sphere_electronics/RS64c_PS/RS64c_PS.kicad_pcb

RS64c PS PCB layout, top view — open source board by lhm0

About the RS64c PS PCB

RS64c PS is an open source PCB design by lhm0, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 124 × 119.9 mm, with 72 components from 42 distinct parts.

Other key parts include the Pin-Connector, 4017, TPS54302, HT7550-1-SOT89 and CH224K. By type, the board carries 25 resistors, 17 capacitors, 13 ICs, 8 transistors, 3 switches and 2 diodes.

It belongs with the displays & leds and power & battery designs in this gallery.

From the project

Rotating LED Sphere - a POV display with RP2040

However, alignment of the rotor now is done by placing washers between header and pcb, if necessary.

Furthermore, I have added a file "print_instructions.pdf" in the /mechanics subfolder, with slicer images of the parts that need nut inlays.

UPDATE August 29th, 2025 There are two push switches on the power supply pcb, that control the speed of the motor. The "speed" button is used to increase the motor speed step by step. Once the maximum speed is reached, it jumps back to zero. The "off" button turns the motor off.

RS64c PS, from the project README
From the project README

Main components on the RS64c PS

Pin-Connector4017TPS54302HT7550-1-SOT89CH224K

RS64c PS bill of materials (BOM)

72 components, 42 distinct parts — part numbers from the project's BOM.

QtyPartRefs
6
Pin-Connector
U1, U2, U3, U4, U5, U6
1
4017
U7
1
TPS54302
U8
3
~
U9, U12, U13
1
HT7550-1-SOT89
U10
1
CH224K
U11
1
Motor_DC
M1
2
D882
Q1, Q2
6
BSS138
Q3, Q4, Q5, Q6, Q7, Q8
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
2
C780037
~
SW1, SW2
1
SW_DIP_X03
SW_DIP_x03
SW3
1
SS34
D1
1
LED
D3
1
C10152
330µH
L1
1
C5189958
10µH
L3
1
33NF
33nF
C1
1
C13585
10µ, 50V
C2
2
C15849
1µF
C3, C14
1
C13585
10µF, 50V
C4
Show 22 more
QtyPartRefs
4
100NF
100nF
C5, C9, C13, C16
2
C45783
22µF
C6, C7
1
1NF
1nF
C8
1
100NF
100nF
C10
1
C440198
10µF
C11
1
C13585
10µF
C12
1
47PF
47pF
C15
1
22PF
22pF
C17
1
2K2
2k2
R1
1
15K
15k
R2
5
10K
10k
R3, R10, R12, R21, R23
1
100R
R4
1
22K
22k
R5
2
100K
100k
R6, R14
6
47K
47k
R7, R9, R15, R18, R20, R24
1
4K7
4k7
R8
2
1k
R11, R25
1
56K
56k
R13
1
30K
30k
R16
1
20K
20k
R17
1
49.9
R19
1
1k
R22

RS64c PS design files

The KiCad project lives in the lhm0/rotating_sphere repository on GitHub; these links point at the commit this page was built from.

RS64c PS: common questions

How big is the RS64c PS PCB?

The RS64c PS measures 124 × 119.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RS64c PS?

72 components, from 42 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the RS64c PS design files?

From the lhm0/rotating_sphere repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the RS64c PS design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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