Kv4p ht-MagSafe
About the Kv4p ht-MagSafe PCB
Kv4p ht-MagSafe is an open source ESP32 PCB design by bi4wms, published on GitHub. It is a 2-layer board measuring 54.5 × 74.8 mm, with 72 components from 39 distinct parts.
Its main chip is the ESP32-WROOM-32E-N4, from the ESP32 family. Other key parts include the DRA/SA818, AZ1117H-3.3TRG1 and CH340K. By type, the board carries 31 capacitors, 17 resistors, 4 ICs, 4 switches, 4 inductors and 3 transistors.
From the project
MagSafe version for kv4p-ht
Main components on the Kv4p ht-MagSafe
Kv4p ht-MagSafe bill of materials (BOM)
72 components, 39 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DRA/SA818 | DORJI_DRA818V | U1 |
| 1 | AZ1117H-3.3TRG1 | SOT-223-3_TabPin2 | U2 |
| 1 | CH340K | SSOP-10-1EP_3.9x4.9mm_P1mm_EP2.1x3.3mm | U4 |
| 1 | ESP32-WROOM-32E-N4 | ESP32-WROOM-32D | U5 |
| 2 | SS8050 | SOT-23 | Q1, Q2 |
| 1 | AO3400A | SOT-23 | Q3 |
| 1 | C192301 SAO v.69bis | PinHeader_2x03_P2.54mm_Vertical_SMD | J2 |
| 1 | C192300 GPIO Header | PinHeader_2x04_P2.54mm_Vertical_SMD | J3 |
| 1 | C2894897 USB-C Socket | USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J5 |
| 1 | Antenna_Shield | SMA_BAT_Wireless_BWSMA-KWE-Z001 | AE101 |
| 2 | 100MA 100mA | C_0402_1005Metric | F1, F2 |
| 1 | LFCN-490+ | Filter_Mini-Circuits_FV1206 | FL1 |
| 2 | C455252 PTT | SW-Push-SPST-Horizontal-C782857 | SW1, SW2 |
| 1 | C318884 Reset | SW_SPST_TL3342 | SW3 |
| 1 | C318884 Program | SW_SPST_TL3342 | SW4 |
| 1 | C2286 RED | LED_0603_1608Metric | D1 |
| 1 | WS2812 WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |
| 1 | BLM18KG102SN1D Ferrite Bead, 1A | L_0603_1608Metric | FB1 |
| 1 | LQW2BAN27NJ00L 27nH | L_0603_1608Metric | L1 |
| 1 | LQW2BAN30NG00L 30nH | L_0603_1608Metric | L2 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LQW2BAN43NG00L 43nH | L_0603_1608Metric | L3 |
| 1 | Ya basic. 18pF | C_0402_1005Metric | C1 |
| 3 | C16133 100uF 6.3v | C_1206_3216Metric | C2, C16, C40 |
| 9 | GCM1885C1H222FA16D 2.2nF Murata | C_0402_1005Metric | C3, C8, C12, C21, C22, C23, C24, C28 +1 |
| 1 | CC0402JRNPO9BN160 16pF | C_0402_1005Metric | C4 |
| 1 | Ya so basic. 10pF | C_0402_1005Metric | C5 |
| 1 | 5.1PF 5.1pF | C_0402_1005Metric | C6 |
| 5 | 100NF 100nF | C_0402_1005Metric | C7, C11, C17, C18, C26 |
| 2 | 1UF 1uF | C_0402_1005Metric | C9, C10 |
| 3 | 10UF 10uF | C_0603_1608Metric | C14, C19, C20 |
| 2 | 100PF 100pF | C_0402_1005Metric | C15, C25 |
| 1 | 2.7PF 2.7pF | C_0402_1005Metric | C27 |
| 1 | 13PF 13pF | C_0402_1005Metric | C29 |
| 1 | 11PF 11pF | C_0402_1005Metric | C31 |
| 3 | 100K | R_0402_1005Metric | R1, R16, R21 |
| 8 | 10K | R_0402_1005Metric | R2, R3, R5, R9, R10, R11, R13, R15 |
| 2 | 5.1K | R_0402_1005Metric | R7, R8 |
| 3 | 1.2K | R_0402_1005Metric | R18, R19, R20 |
| 1 | C17888 0R | R_0402_1005Metric | R22 |
Kv4p ht-MagSafe design files
The KiCad project lives in the bi4wms/kv4p-ht-MagSafe repository on GitHub; these links point at the commit this page was built from.
Kv4p ht-MagSafe: common questions
What microcontroller does the Kv4p ht-MagSafe use?
The Kv4p ht-MagSafe is built around the ESP32-WROOM-32E-N4, from the ESP32 family.
How big is the Kv4p ht-MagSafe PCB?
The Kv4p ht-MagSafe measures 54.5 × 74.8 mm, has 2 copper layers and is 1.69 mm thick.
How many components are on the Kv4p ht-MagSafe?
72 components, from 39 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 Kv4p ht-MagSafe design files?
From the bi4wms/kv4p-ht-MagSafe 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 Kv4p ht-MagSafe design in my own project?
The repository has no license, so all rights stay with bi4wms. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Kv4p ht-MagSafe without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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