Power management
Power-management boards distribute and convert the 12 V supply so each part of a build gets the voltage and current it needs.
12V5A breakout
A barrel-jack input, a power LED indicator and nine connectors that fan 12 V / 5 A out to the mainboard and daughter boards.
| Key parts | Barrel jack, Power LED, 9 × output connectors |
| Power | 12 V / 5 A in and out |
| Details | Board page & schematics |
Hardware files: Order & BOM on Kitspace · Gerbers · KiCad PCB
Bill of materials — 4 lines
| Ref | Qty | Description |
|---|---|---|
| J1 | 1 | 2.1mm socket |
| J2, J3, J4, J5, J6, J7, J8, J9, J10 | 9 | CONN HEADER XH TOP 2POS 2.5MM |
| R1 | 1 | Resistor 560 ohm 250mW through-hole |
| D1 | D2; | 2 |
5V3A breakout
Converts 12 V / 5 A to 5 V / 3 A using an LM2596 regulator. Fed from either mainboard 12 V output; can be daisy-chained to another 5 V / 3 A breakout.
| Key parts | LM2596 |
| Power | 12 V / 5 A in; 5 V / 3 A out |
| Details | Board page & schematics |
12V/24V boost converter
A 555-based step-up converter that provides up to 24 V / 1 A — used to power solenoids in "Spike & Hold" mode, or any other 24 V device. Powered from the mainboard or the 12V5A breakout.
| Key parts | 555 timer IC |
| Power | 12 V / 5 A in; 24 V / 1 A out |
| Details | Board page & schematics |
Hardware files: Order & BOM on Kitspace · Gerbers · KiCad PCB
Bill of materials — 13 lines
| Ref | Qty | Description |
|---|---|---|
| Q1 | 1 | IRFZ24NPBF or IRFZ44NPbF footprint TO-220AB |
| R1, R2, R3 | 3 | Resistor 47 ohm 250mW through-hole |
| R4 | 1 | Resistor 1k ohm 250mW through-hole |
| R5 | 1 | Resistor 560 ohm 250mW through-hole |
| C1, C2 | 2 | 100nF Capacitor Disc |
| C3 | 1 | 22uF CP_Radial_D5.0mm_P2.00mm |
| L1 | 1 | INDUCTOR 33µH Neosid MA-Bs75 |
| J1, J2, J3, J4 | 4 | CONN HEADER XH TOP 2POS 2.5MM |
| D1 | 1 | Diode Schottky 5A DO-201AD |
| D2 | 1 | 3mm LED any colour |
| cables | 16 | JUMPER SXH-001T-P0.6 X2 10"" |
| connectors 2pin | 4 | CONN HOUSING 2.5MM 2POS |
| connectors 4pin | 6 | CONN HOUSING 2.5MM 4POS |