This board has been developed to control demo setups. It is essentially a smaller sized pinball machine controller. This board is based on the Arduino Uno, paired with a PCA9685 breakout board, eight MOSFETs and a four by four input matrix.
You will need to have a stencil made to make this board yourself. The SMD part footprints are not made for hand soldering.
Warning: These designs are made as part of a hobby project and thus come with no guarantees. Do not use these designs in for any critical systems! Working with voltages higher than +40V can be potentially dangerous, please take appropriate safety measures!
- Connectors J2 and J3 are optional. These headers expose the I2C bus and UART respectively.
- Connectors J4, J5, and J6 are optional. These headers expose the microcontroller pins.
- Connector J7 or J8 are optional. These connectors are connected to the +5V rail. You will need at least one to power the board. The other connector can be used to power another board.
- Connector J9 or J10 are optional. These connectors are connected to the +48V rail. You will need at least one when using the MOSFETs. The other connector can be used to power another board.
- MOSFETs Q1 thru Q8 are optional:
- Do not populate R4, R6, connector SOL0, and D3 when not using Q1;
- Do not populate R8, R10, connector SOL1, and D4 when not using Q2;
- Do not populate R5, R7, connector SOL2, and D5 when not using Q3;
- Do not populate R9, R11, connector SOL3, and D6 when not using Q4;
- Do not populate R12, R14, connector SOL4, and D7 when not using Q5;
- Do not populate R16, R18, connector SOL5, and D8 when not using Q6;
- Do not populate R13, R15, connector SOL6, and D9 when not using Q7;
- Do not populate R17, R19, connector SOL7, and D10 when not using Q8;
- When not using a MOSFET, you can use its pin on the PCA9685 to drive an LED:
- Populate LED0 if Q1 is not used;
- Populate LED1 if Q2 is not used;
- Populate LED2 if Q3 is not used;
- Populate LED3 if Q4 is not used;
- Populate LED4 if Q5 is not used;
- Populate LED5 if Q6 is not used;
- Populate LED6 if Q7 is not used;
- Populate LED7 if Q8 is not used;
- SOL0 and SOL2 can be populated with either a 2 pin or a 3 pin connector:
- Do not populate SOL1 when SOL0 is populated with a 3 pin connector;
- Do not populate SOL3 when SOL2 is populated with a 3 pin connector;
- All connectors and diodes making up the input matrix are optional:
- Bridge JP3 thru JP6 to enable columns;
- Bridge JP7 thru JP10 to enable rows;
- Capacitors C6 thru C9 are optional. Populating C6 is recommended. Populate others if needed.
- Capacitors C10 thru C13 are optional. Populate if needed.
| Identifiers | Quantity | Part number | Manufacturer | Footprint | Description |
|---|---|---|---|---|---|
| C1 | 1x | CL10A475KQ8NNWC | Samsung Electro-Mechanics | 0603 | Capacitor, MLCC, 4.7μF, 10V |
| C2, C3, C4, C5 | 4x | GRM188R60J476ME15J | Murata Electronics | 0603 | Capacitor, MLCC, 47μF, 6.3V |
| C6, C7, C8, C9 | 4x | URS1A470MDD1TA | Nichicon | ⌀5mm / 2mm | Capacitor, Electrolytic, 47μ, 10V |
| C10, C11, C12, C13 | 4x | UVZ1J101MPD | Nichicon | ⌀10mm / 5mm | Capacitor, Electrolytic, 100μF, 63V |
| C14 | 1x | LMK107BBJ106MALT | Taiyo Yuden | 0603 | Capacitor, MLCC, 10μF, 10V |
| D1 | 1x | 150060RS75000 | Wurth Elektronik | 0603 | LED, Red |
| D2 | 1x | 150060GS75000 | Wurth Elektronik | 0603 | LED, Green |
| D3, D4, D5, D6, D7, D8, D9, D10 | 8x | S1M-13-F | Diodes Incorporated | SMA | Diode, rectifier, 1A, 1000V |
| D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26 | 16x | 1N4148W-G3-08 | Vishay / Dale | SOD-123 | Diode, general purpose, 150mA, 100V |
| J1 | 1x | 2.54mm | Connector, 2x3, Pin header | ||
| J2, J3 | 2x | B4B-XH-A(LF)(SN) | JST | 2.50mm | Connector, 1x4 |
| J4, J5 | 2x | 2.54mm | Connector, 1x8, pin header | ||
| J6 | 1x | 2.54mm | Connector, 1x6, pin header | ||
| J7, J8, LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, MTX-0x0, MTX-0x1, MTX-0x2, MTX-0x3, MTX-1x0, MTX-1x1, MTX-1x2, MTX-1x3, MTX-2x0, MTX-2x1, MTX-2x2, MTX-2x3, MTX-3x0, MTX-3x1, MTX-3x2, MTX-3x3 | 34x | B2B-XH-A(LF)(SN) | JST | 2.50mm | Connector, 1x2 |
| J9, J10, SOL0, SOL1, SOL2, SOL3, SOL4, SOL5, SOL6, SOL7 | 10x | B2P-VH or 1-1123723-3 | JST or TE Connectivity | 3.96mm | Connector, 1x2 |
| JP1, JP2 | 2x | 2.54mm | Jumper wire | ||
| SOL0, SOL2 | 2x | B3P-VH or 1-1123723-2 | JST or TE Connectivity | 3.96mm | Connector, 1x3 |
| Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 | 8x | IRL540NPBF | Infineon / IR | TO-220 | MOSFET, 100V, 36A |
| R1 | 1x | CRCW06034K70JNEAC | Vishay / Dale | 0603 | Resistor, 4.7kΩ |
| R2, R3 | 2x | CRCW06031K00FKEAC | Vishay / Dale | 0603 | Resistor, 1kΩ |
| R4, R5, R8, R9, R12, R13, R16, R17 | 8x | CRCW060310R0FKEAC | Vishay / Dale | 0603 | Resistor, 10Ω |
| R6, R7, R10, R11, R14, R15, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32 | 21x | CRCW060310K0JNEAC | Vishay / Dale | 0603 | Resistor, 10kΩ |
| SW1 | 1x | PTS810SJM250SMTRLFS | C&K | - | Switch |
| U1 | 1x | ATmega328P-AU | Microchip Technology | TQFP-32 | Microcontroller |
| U2 | 1x | PCA9685PW,112 | NXP Semiconductors | TSSOP-28 | PWM driver |
| Y1 | 1x | CSTNE16M0V53L00ZR0 | Murata Electronics | - | Resonator, 16MHz, 15pF |
You can use either the JST VH series pin headers or the TE Connectivity Economy Power series pin headers. These pin headers are known to fit, other 3.96mm pin pitch pin headers might also fit.
- Order the JST SVH-21T-P1.1 crimp contacts (0.34mm² - 0.75mm²) for use with the JST pin headers
- Order JST VHR-2N connector housing for the JST B2P-VH pin header
- Order JST VHR-3N connector housing for the JST B3P-VH pin header
- Order the TE Connectivity 1123721-2 crimp contacts (0.34mm² - 0.75mm²) for use with the TE Connectivity pin headers
- Order the TE Connectivity 1-1123722-2 connector housing for the TE Connectivity 1-1123723-2 pin header
- Order the TE Connectivity 1-1123722-3 connector housing for the TE Connectivity 1-1123723-3 pin header
