The following text must be included in any distribution of derivatives of this board. All links must also be included.
Based on the Zero_Rhythm board from the GP2040-CE project located at https://github.com/OpenStickCommunity/Hardware/tree/main/Boards/GP2040-CE%20Official%20Controllers/Zero_Rhythm
Copyright 2023 TheTrain
Changes from the original design:
- list any changes you make here
The Zero_Rhythm was an idea I had while playing through the Theatrhythm demo on my Switch. It allows you to play rhythm as well as dual stick games in a double WASD layout. How good this actually is has yet to be proven.
A few immediate notes: 1 - The screen layout is not complete. If I get around to making one I will update here and make a proper config for this.
Zero_Rhythm is based around a soldered on Waveshare RP2040 Zero or the newer RP2040 Super Mini. It is designed to be hand soldered and as such no BOM or CPL files are included. It works with hot swap sockets, Choc v1 switches and caps and you can add LEDs if you like.
Currently the hosted configuration for this maps the right WASD section to A/B/X/Y for use with various Switch games. You can update this to RS via the DDI add-on if you like.
We have a small but passionate Discord group which you can access here, if interested: https://discord.com/invite/k2pxhke7q8
This is a fairly straight-forward design. It features a broken out Zero or Super Mini, RGB LEDs and an OLED.
These boards are designed to be hand assembled after you get the boards from JLC.
This design includes both SMD and through hole parts.
You will also need the following hardware components to assembe the Zero_Rhythm:
- Waveshare RP2040 Zero or RP2040 Super Mini board (found commonly on Amazon and AliExpress)
- 0.96" OLED AliExpress Link (make sure you get the module version) Note: You will need to take off the plastic part of the header on it otherwise the plexi will not lay flush! You will also need to snip the legs after soldered on.
- 8x M2x6mm spacer standoffs AliExpress Link
- 1x M2x5mm countersunk bolts AliExpress Link
- 7x M2x8mm buttonhead bolts AliExpress Link
- 5x 6x6x11mm tactile switches (found commonly on Amazon and AliExpress)
- 12x Choc v1 switches
- 12x Choc v1 hotswap sockets
- 8x Choc v1 keycaps (normal 1U)
- 4x Choc v1 keycap (larger 2U)
- 4x Choc v1 2U stabilizer bars
- 1x 100nF cap (1206 size)
- 1x 10k resistor (1206 size)
- 1x 5v Logic shifter (SN74LV1T34DBVR)
- 12x SK6812 MINI-E RGB LEDs AliExpress Link
You will need to 3D print the following parts:
You will also need to following laser cut (bottom foam optional):
- 1x Top plexi
- 1x Bottom foam
- Please note that there is no BOM or CPL included. Assembly for this board at JLC has not been tested and should not be done.
All of the boards so far have been ordered though JLCPCB. Due to minimum order numbers you would get five of these basic breakout boards. Here are the steps to make your first order and what options I choose along the way.
1 - Go to JLCPCB.com
2 - Click on Instant Quote
3 - Click on Add Gerber file and choose the file named Gerber - Open_Core0 WASD v2.0.zip from the Hardware files folder
4 - Choose the following options for the board:
- Base Material = FR-4
- Layers = 2
- Dimensions = (should auto-populate) 240 mm x 100 mm
- PCB Qty = (however large your run will be, minimum of 5)
- Product Type = Industrial/Consumer electronics
- Different Design = 1
- PCB Thickness = 1.6
- PCB Color = (up to you)
- Silkscreen = (defaults to white for all except white boards which is black)
- Surface Finish = HASL(with lead)
- Outer Copper Weight = 1oz
- Via Covering = Tented
- Board Outline Tolerance = +/- 0.2mm (Regular)
- Confirm Production file = No
- Remove Order Number = Yes (note 1)
- Flying Probe Test = Fully Test
- Gold Fingers = No
- Castellated Holes = No
- No advanced options
Note 1 - This adds a small cost to the boards but removes the JLCPCB order number. If you are looking to make a run as cheap as possible you can leave this on and either let them place it on the board or add JLCJLCJLCJLC somewhere on the board in silk screen and they will place the order number there.
If all looks well here you can click on the SAVE TO CART button.
5 - The Secure Checkout process will be different based on your location in the world. We recommend researching your shipping options to choose the one that is right for your application. If you are planning to also order the aluminum bottom plate then please check out the following section before placing your order.
If uploading the firmware before assembly you can hold the BootSel button on the Zero / Super Mini and plug the device into your computer. It will show up as an external device. Copy the GP2040-CE_X.X.X_ZeroRhythm.uf2 file to it from the firmware section and wait for the device to disconnect after copying completes.
If something goes wrong and you want to upload the firmware again (or if you have tested out the configuration tool and made a mistake) you can enter BootSel mode via either of the methods above and drag over the included flash_nuke.uf2 file. This file will take a moment to write to the Pico, once completed you will see the device disconnect and then re-connect as an external device. After it has shown up again you can copy the same GP2040-CE_X.X.X_ZeroRhythm.uf2 firmware over to it again.
To get into web-config you can put it back in bootsel mode and put the force_webconfig.uf2 on.
// Main pin mapping Configuration
// // GP2040 | Xinput | Switch | PS3/4/5 | Dinput | Arcade |
#define GPIO_PIN_01 GpioAction::BUTTON_PRESS_R2 // R2 | RT | ZR | R2 | 8 | K3 |
#define GPIO_PIN_02 GpioAction::BUTTON_PRESS_B2 // B2 | B | A | Circle | 3 | K2 |
#define GPIO_PIN_03 GpioAction::BUTTON_PRESS_B4 // B4 | Y | X | Triangle | 4 | P2 |
#define GPIO_PIN_04 GpioAction::BUTTON_PRESS_B1 // B1 | A | B | Cross | 2 | K1 |
#define GPIO_PIN_05 GpioAction::BUTTON_PRESS_B3 // B3 | X | Y | Square | 1 | P1 |
#define GPIO_PIN_06 GpioAction::BUTTON_PRESS_R1 // R1 | RB | R | R1 | 6 | P3 |
#define GPIO_PIN_07 GpioAction::BUTTON_PRESS_A2 // A2 | ~ | Capture | ~ | 14 | ~ |
#define GPIO_PIN_08 GpioAction::BUTTON_PRESS_A1 // A1 | Guide | Home | PS | 13 | ~ |
#define GPIO_PIN_09 GpioAction::BUTTON_PRESS_S1 // S1 | Back | Minus | Select | 9 | Coin |
#define GPIO_PIN_10 GpioAction::BUTTON_PRESS_S2 // S2 | Start | Plus | Start | 10 | Start |
#define GPIO_PIN_11 GpioAction::BUTTON_PRESS_L1 // L1 | LB | L | L1 | 5 | P4 |
#define GPIO_PIN_14 GpioAction::BUTTON_PRESS_RIGHT // RIGHT | RIGHT | RIGHT | RIGHT | RIGHT | RIGHT |
#define GPIO_PIN_15 GpioAction::BUTTON_PRESS_DOWN // DOWN | DOWN | DOWN | DOWN | DOWN | DOWN |
#define GPIO_PIN_26 GpioAction::BUTTON_PRESS_UP // UP | UP | UP | UP | UP | UP |
#define GPIO_PIN_27 GpioAction::BUTTON_PRESS_LEFT // LEFT | LEFT | LEFT | LEFT | LEFT | LEFT |
#define GPIO_PIN_28 GpioAction::BUTTON_PRESS_L2 // L2 | LT | ZL | L2 | 7 | K4 |
Through the licencing you are free to make and sell these boards in group buys or even commercial applications.
The intended purpose of this board, as well as the overall GP2040-CE project is to get low cost boards into the hands of as many people as possible to everyone can enjoy the project.
I have a recommend MSRP of $100 USD shipped for the Zero_Rhythm.
You are free to set your own price as you see fit.
Every part of this project is open source, from the GP2040-CE firmware to the original Pico Fighting Board design and also this Open_Core0 design.
Donations are not necessary but always welcome! I typicly use donations to pay for Discord boosts and try out new designs or send boards to people for testing, iterations and helping people get board setups that might not be in an economic position to get one themselves.
https://www.paypal.com/donate/?hosted_button_id=2JMTZVCGLDYC2
v1.0
- Innitial design
- TheTrain for the board design
- SmorezPoptart for answering silly questions I had about Theatrhythm
- FeralAI for starting the GP2040 project and the original design of the Pico Fighting Board
- Everyone that works on the GP2040-CE project to make it the best controller firmware around