EasyRelay Board
About the EasyRelay Board
EasyRelay Board is an open source PCB design by stamina, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 70 × 80 mm, with 66 components from 41 distinct parts.
Other key parts include the Wurth 5V SMPS package, ULN2003LV, LD1117S33TR_SOT223, MCP23S17 SENSES and TLV2371IDBVR opamp. By type, the board carries 19 capacitors, 13 relays, 9 ICs, 8 resistors, 6 connectors and 3 fuses.
It belongs with the iot & wireless, rf & radio and sensors designs in this gallery.
From the project
Motorcycle ECU STM32 ARM Cortex 4 source code and hardware PCB design
EasyRider REV C is a motorcycle telemetrics project, developed specifically for my Honda C90 classic bike.
The software is written in C using the libopencm3 library for the STM32 446RE Arm Cortex M4 microcontroller.
The PCB's were created with Kicad 6, you'll find all gerbers/schematics/datasheets in the /docs directory.
EasyRider basically does the following things:
Main components on the EasyRelay Board
EasyRelay Board bill of materials (BOM)
66 components, 41 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Wurth 5V SMPS package | WURTH-3PIN_FSDM_PACKAGE_TO-220-3_compatible | U1 |
| 2 | ULN2003LV | TSSOP16_ULN2003LV | U2, U5 |
| 1 | LD1117S33TR_SOT223 | SOT-223-3_TabPin2 | U3 |
| 1 | MCP23S17 SENSES | SSOP-28_5.3x10.2mm_P0.65mm | U4 |
| 1 | TLV2371IDBVR opamp | SOT-23-5_HandSoldering | U6 |
| 1 | VO610A optocoupler | SMDIP-4_W9.53mm | U7 |
| 1 | TMCS1101A3UQDRQ1 | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | MCP23S17 RELAYS | SSOP-28_5.3x10.2mm_P0.65mm | U9 |
| 1 | Screw_Terminal_01x03 | ScrewTerminalBlock_3_P5.08mm | J1 |
| 1 | Power and Relays 15pins | MolexMiniLock_1Ampere_1x15_P2.50mm | J2 |
| 1 | XTRA | PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | LEFT Morpho | PinHeader_2x19_P2.54mm_Vertical | J4 |
| 1 | Senses and switches | MolexMiniLock_1Ampere_1x15_P2.50mm | J5 |
| 1 | RIGHT Morpho | PinHeader_2x19_P2.54mm_Vertical | J6 |
| 1 | Battery | BatteryHolder_Renata SMTU1225-LF | BT1 |
| 2 | Fuse 6A 24V slow blow | Fuse_1206_3216Metric | F1, F3 |
| 1 | Polyfuse PPTC 1.1A 16V | Fuse_1206_3216Metric | F2 |
| 1 | LIGHT_RELAY | MEDER RELAY_CRR05-1A | K1 |
| 1 | PILOT_RELAY | MEDER RELAY_CRR05-1A | K2 |
| 1 | BRAKE_RELAY | MEDER RELAY_CRR05-1A | K3 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RIB_RELAY | MEDER RELAY_CRR05-1A | K4 |
| 1 | XTRA2_RELAY | MEDER RELAY_CRR05-1A | K5 |
| 1 | PITIND_RELAY | MEDER RELAY_CRR05-1A | K6 |
| 1 | LIF_RELAY | MEDER RELAY_CRR05-1A | K7 |
| 1 | XTRA3_RELAY | MEDER RELAY_CRR05-1A | K8 |
| 1 | PITSTA_RELAY | MEDER RELAY_CRR05-1A | K9 |
| 1 | LIB_RELAY | MEDER RELAY_CRR05-1A | K10 |
| 1 | RIF_RELAY | MEDER RELAY_CRR05-1A | K11 |
| 1 | XTRA1_RELAY | MEDER RELAY_CRR05-1A | K12 |
| 1 | G5NB | Relay_SPST_Omron-G5NB-1A 5V coil, 12V switch 3Ampere | K13 |
| 3 | 18V Varistor | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | RV1, RV2, RV3 |
| 1 | 3V3 | PinHeader_1x01_P2.54mm_Vertical | TP3V3 |
| 1 | 5V | PinHeader_1x01_P2.54mm_Vertical | TP5V |
| 2 | 1N4007 | D_DO-15_P12.70mm_Horizontal | D1, D2 |
| 1 | 330uF | CP_Radial_D10.0mm_P5.00mm | C1 |
| 11 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C4, C6, C7, C8, C10, C12 +3 |
| 7 | 10uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C9, C11, C14, C15, C17, C18 |
| 2 | 100K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R4 |
| 2 | 20K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R6 |
| 3 | 10K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R7, R8 |
| 1 | 220 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
EasyRelay Board design files
The KiCad project lives in the stamina/easyriderc repository on GitHub; these links point at the commit this page was built from.
EasyRelay Board: common questions
How big is the EasyRelay Board?
The EasyRelay Board measures 70 × 80 mm, has 4 copper layers and is 1.58 mm thick.
How many components are on the EasyRelay Board?
66 components, from 41 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 EasyRelay Board design files?
From the stamina/easyriderc 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 EasyRelay Board design in my own project?
Yes, under the terms of its GPL-3.0 license, which stamina chose for the repository.
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