HVBoard
About the HVBoard PCB
HVBoard is an open source PCB design by parya03, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 100 × 60 mm, with 49 components from 28 distinct parts.
Other key parts include the LTV-354T, FOD420 and 5V700mA 3.5W. By type, the board carries 19 resistors, 8 connectors, 5 transistors, 4 ICs, 4 test points and 4 diodes.
From the project
Espresso Machine Board Project Make a new controller for my Chefman CraftBrew
Espresso Machine Board Project Make a new controller for my Chefman CraftBrew
Power converter KiCad symbol and footprint from: https://github.com/yaserharba/WX-DC12003_Kicad
Single shot brew temp: ~180 F Steam temp: ~205 F at valve, ~230F at boiler NTC 100k(?) Thermistor - ~114kOhm at ~22.5C CMS79FT738 MCU 13 x 6 cm board 3/16” OD, 1/8”(?) ID tubing
Why is OPV before boiler? Where to put actual pressure sensor?
Main components on the HVBoard
HVBoard bill of materials (BOM)
49 components, 28 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LTV-354T | SO-4_4.4x3.6mm_P2.54mm | U1 |
| 2 | FOD420 | DIP-6_W7.62mm | U2, U3 |
| 1 | 5V700mA 3.5W | WX-DC12003 | U4 |
| 3 | NMOS | SOT-23 | Q1, Q4, Q6 |
| 2 | BTA16-600B | TO-220-3_Vertical | Q3, Q5 |
| 1 | Conn_01x08_Pin | JST_PH_B8B-PH-K_1x08_P2.00mm_Vertical | J2 |
| 1 | B3P-VH (LF)(SN) B3P-VH__LF__SN_ | HDRV3W114P0X396_1X3_1182X850X1090P | J3 |
| 3 | Conn_01x02_Pin | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J4, J5, J9 |
| 1 | Conn_01x03_Pin | JST_XH_B3B-XH-AM_1x03_P2.50mm_Vertical | J6 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_bornier-2_P5.08mm | J7, J8 |
| 1 | 1A | Fuse_0603_1608Metric_Pad1.05x0.95mm_HandSolder | F1 |
| 1 | Jumper_2_Open | SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | G2RL-1A-E-HA DC5 | Relay_SPST_Omron_G2RL-1A-E | K1 |
| 4 | TestPoint | PinHeader_1x01_P2.54mm_Vertical | TP1, TP2, TP3, TP6 |
| 1 | D_Zener | D_SOD-123 | D1 |
| 1 | PTVS6V0S1UR-QX | Nexperia_CFP3_SOD-123W | D2 |
| 1 | MP01EA06 | D_SOD-123 | D3 |
| 1 | LED | LED_0603_1608Metric | D4 |
| 2 | 0.01u | C_Disc_D11.0mm_W5.0mm_P7.50mm | C1, C3 |
| 3 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R10, R15 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 220 | R_0603_1608Metric | R2 |
| 2 | 47k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R5 |
| 4 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R16, R20, R21 |
| 2 | 360 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6, R11 |
| 2 | 220 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R12 |
| 2 | 39 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R13 |
| 2 | 330 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R9, R14 |
| 1 | 20k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17 |
HVBoard design files
The KiCad project lives in the parya03/EspressoMachineBoard_HW repository on GitHub; these links point at the commit this page was built from.
- LayoutHVBoard/HVBoard.kicad_pcb
- SchematicHVBoard/HVBoard.kicad_sch
HVBoard: common questions
How big is the HVBoard PCB?
The HVBoard measures 100 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the HVBoard?
49 components, from 28 distinct parts. The full bill of materials is listed on this page.
Where can I download the HVBoard design files?
From the parya03/EspressoMachineBoard_HW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the HVBoard design in my own project?
Yes, under the terms of its Apache-2.0 license, which parya03 chose for the repository.
