GC Ultimate Main Board R5
HandHeldLegend·GC-Ultimate·HW/Projects/Main_R5/UGC_Main_R5.kicad_pcb
About the GC Ultimate Main Board R5
GC Ultimate Main Board R5 is an open source RP2040/RP2350 PCB design by HandHeldLegend, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 125.7 × 76.6 mm, with 140 components from 44 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the BQ27621YZFR-G1A, USBLC6-2P6, TPS63001DRCR, LSM6DSRTR and GD25Q80EEIGR. By type, the board carries 42 resistors, 29 capacitors, 19 inductors, 15 diodes, 11 switches and 10 ICs.
It belongs with the power & battery designs in this gallery, and the repository also holds 2 earlier revisions of it.
From the project
Resources Cross-Referenced for component placement and other spacing detail: - 3D Scans by Wesk - GCC CAD Model by GearHawk - PhobGCC PCB - 3D models for the ergonomic trigger reference were provided with full permission from YaBoiMikey

Main components on the GC Ultimate Main Board R5
GC Ultimate Main Board R5 bill of materials (BOM)
140 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ27621YZFR-G1A | BGA9C50P3X3_162X158X62 | IC1 |
| 3 | USBLC6-2P6 | SOT-666 | U1, U2, U3 |
| 1 | TPS63001DRCR TPS630001RCR | VREG_V62_16624-01YE | U4 |
| 2 | LSM6DSRTR ST_LSM6 | LGA14 | U5, U10 |
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U8 |
| 1 | GD25Q80EEIGR | USON-8-EP(2x3) | U9 |
| 1 | BQ25180 | DSBGA | U11 |
| 2 | BSS138DW-7-F BSS138DW | SOT-363_SC-70-6 | Q3, Q4 |
| 2 | MMBT2222A | SOT-23 | Q5, Q6 |
| 1 | ABM8-272-T3 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 2 | SM02B-SURS-TF(LF)(SN) SM02B-SURS-TF_LF__SN_ | JST_SM02B-SURS-TF_LF__SN_ | J1, J10 |
| 1 | 5034800640 503480-0640 | 5034800640 | J2 |
| 1 | 5051100792 Molex 5051100792 | CON_5051100792_MOL | J3 |
| 2 | 5051100492 Conn_01x04_Socket | 5051100492 | J4, J5 |
| 1 | USB4056-03-A USB4056-03-A2 Global Connector Technology | USB405603A | J11 |
| 1 | RPI-RM2 | RPI_RM2 | P1 |
| 1 | HDGC2001WV-2P Battery | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | B1 |
| 1 | TMUX1204DQAR | TMUX1204DQAR | S7 |
| 6 | TS-1187A-C-E-B TS-1187A-C-A-B | TS-1187A-C-E-B | SW5, SW9, SW14, SW17, SW18, SW19 |
| 1 | GL1807SYAE-002 GL18_SW | GL1807SYAE | SW6 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TC-00100V H5.0 100gf SW_Push | Z_Switch_Edge_Omron | SW7, SW8 |
| 1 | 1TS026A-1000-0550 | 1TS026A-1000-0550 | SW15 |
| 3 | CUS08F30,H3F | D_SOD-323_HandSoldering | D1, D9, D10 |
| 6 | B5819WT M7C | D_SOD-523 | D3, D6, D7, D14, D15, D16 |
| 6 | BAS16VY,115 | SOT-363_SC-70-6 | D4, D5, D8, D11, D12, D13 |
| 17 | SK6805-EC-10 | SK6805-EC-10 | L1, L2, L3, L4, L6, L8, L9, L10 +9 |
| 1 | MIP25202R2MBE 1.3A 2.2uH ±20% 80mΩ | L_1008_2520Metric | L5 |
| 1 | BLM18AG601SN1D | L_0603_1608Metric | L7 |
| 2 | CC0603JRX7R9BB473 47nF | C_0603_1608Metric | C1, C2 |
| 1 | TAJA476K006RNJ 47uF | CP_EIA-3216-18_Kemet-A | C3 |
| 3 | CL21A106KPFNNNE 10uF | C_0805_2012Metric | C4, C17, C23 |
| 12 | CL03A104KQ3NNNC 100nF | C_0201_0603Metric | C5, C6, C7, C9, C10, C11, C12, C13 +4 |
| 8 | GRM033R60J105KEA2D 1uF | C_0201_0603Metric | C8, C14, C16, C19, C26, C27, C33, C34 |
| 1 | GRM033R60J474KE90D 0.47uF | C_0201_0603Metric | C15 |
| 2 | CC0402FRNPO9BN150 15pF | C_0402_1005Metric | C28, C29 |
| 14 | RC0201FR-071KL 1k | R_0201_0603Metric | R1, R2, R8, R9, R10, R12, R18, R19 +6 |
| 6 | RC0201FR-07100RL 100R | R_0201_0603Metric | R3, R14, R30, R32, R37, R40 |
| 5 | RC0201FR-0727RL 27R | R_0201_0603Metric | R4, R6, R7, R36, R42 |
| 7 | RC0201FR-0710KL 10k | R_0201_0603Metric | R5, R15, R16, R20, R29, R31, R39 |
| 1 | RC0201FR-07330RL 330R | R_0201_0603Metric | R11 |
| 5 | RC0201FR-070RL 0R | R_0201_0603Metric | R13, R33, R34, R35, R41 |
| 1 | AC0201FR-07470RL 470R | R_0201_0603Metric | R17 |
| 2 | RC0201FR-075K1L 5.1k | R_0201_0603Metric | R21, R22 |
| 1 | RC0402FR-07100KL 100k | R_0402_1005Metric | R38 |
GC Ultimate Main Board R5 design files
The KiCad project lives in the HandHeldLegend/GC-Ultimate repository on GitHub; these links point at the commit this page was built from.
GC Ultimate Main Board R5: common questions
What microcontroller does the GC Ultimate Main Board R5 use?
The GC Ultimate Main Board R5 is built around the RP2040, from the RP2040/RP2350 family.
How big is the GC Ultimate Main Board R5?
The GC Ultimate Main Board R5 measures 125.7 × 76.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the GC Ultimate Main Board R5?
140 components, from 44 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 GC Ultimate Main Board R5 design files?
From the HandHeldLegend/GC-Ultimate 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 GC Ultimate Main Board R5 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.
Can I test firmware for the GC Ultimate Main Board R5 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
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Earlier revisions in the repo: UGC_Main_R4K, UGC_Main
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