ios-cv/maxbox1An in car telemetry and access management box consisting of PCB design, firmware and case.
Maxbox is an open-source printed circuit board by ios-cv, from the ios-cv/maxbox repository on GitHub, published under the AGPL-3.0 licence. It is a 4-layer board of 71.2 × 66.1 mm with 110 parts on 101 nets, routed with 631 tracks and 164 vias.
It is built around the ESP32-WROOM-32E-N4, SN65HVD230D and LMR33630ARNXT, with the MFRC522, AO3400A and NUP2105L among its other parts. Its parts include 44 resistors, 35 capacitors, 10 diodes, 4 ICs and 3 transistors. It belongs with the radio and wireless boards and the ESP32 boards of this library.
This repository is for the 3D design files, KiCad PCB design/Gerber files, and ESP-IDF firmware files to produce a MaxBox control box. This takes the form of a 100mm diameter circular PCB with a Mifare antenna, buck converter capable of up to 36V DC input, RGB LEDs, high speed CAN bus transceiver, an ESP32-WROVER castellated module incorporating a Bluetooth and WiFi antenna, and GPIO to connect buttons and relays.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 33R | Resistor_SMD:R_0402_1005Metric | R22, R23, R25, R26, R28, R29, R31, R32, R34, R35, R37, R38, R40, R41, R43, R44 |
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C6, C10, C12, C13, C14, C20, C26, C27, C30, C35 |
| 8 | 75R | Resistor_SMD:R_0402_1005Metric | R21, R24, R27, R30, R33, R36, R39, R42 |
| 8 | RGBLED | maxlibrary:LED_FM-Z2727RGBA-SH | D4, D5, D6, D7, D8, D9, D10, D11 |
| 5 | 220R | Resistor_SMD:R_0402_1005Metric | R8, R10, R18, R19, R20 |
| 4 | 22u | Capacitor_SMD:C_0805_2012Metric | C8, C9, C33, C34 |
| 3 | 10u | Capacitor_SMD:C_0402_1005Metric | C11, C25, C29 |
| 3 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 100R | Resistor_SMD:R_0402_1005Metric | R15, R16 |
| 2 | 100n 50V | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 122pF | Capacitor_SMD:C_0603_1608Metric | C17, C18 |
| 2 | 12K | Resistor_SMD:R_0402_1005Metric | R7, R9 |
| 2 | 12p | Capacitor_SMD:C_0805_2012Metric | C15, C16 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C5, C7 |
| 2 | 2.7k | Resistor_SMD:R_0603_1608Metric | R4, R17 |
| 2 | 3.24R | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 2 | 41.8pF | Capacitor_SMD:C_0805_2012Metric | C19, C22 |
| 2 | 470R | Resistor_SMD:R_0402_1005Metric | R13, R14 |
| 2 | 470nH | Inductor_SMD:L_0805_2012Metric | L2, L3 |
| 2 | 560p | Capacitor_SMD:C_0402_1005Metric | C31, C32 |
| 2 | 82.8pF | Capacitor_SMD:C_0805_2012Metric | C23, C24 |
| 1 | 100K | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 100k 1% | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 10p | Capacitor_SMD:C_0402_1005Metric | C28 |
| 1 | 10u 50V | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 1n | Capacitor_SMD:C_0402_1005Metric | C21 |
| 1 | 27.12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 4.7u 50V | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 43.2k 1% | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 470K | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 6.8uH | maxlibrary:L_Cenker_CKST0603 | L1 |
| 1 | Antenna_Loop | maxlibrary:95mm-3turn-antenna | AE1 |
| 1 | ESP32-WROOM-32E-N4 | RF_Module:ESP32-WROOM-32 | U3 |
| 1 | LMR33630ARNXT | maxlibrary:RNX0012B_VQFN-HR | U1 |
| 1 | LOGO | maxlibrary:maxlogo | G*** |
| 1 | LOGO | maxlibrary:maxbox_picoblade | G*** |
| 1 | LOGO | maxlibrary:prog header pinout | G*** |
| 1 | LOGO | maxlibrary:reset_text | G*** |
| 1 | LOGO | maxlibrary:tagconnect_header | G*** |
| 1 | LOGO | maxlibrary:maxbox_logo | G*** |
| 1 | MFRC522 | Package_DFN_QFN:VQFN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm_ThermalVias | U2 |
| 1 | NUP2105L | Package_TO_SOT_SMD:SOT-23 | D3 |
| 1 | PICOBLADE | Connector_Molex:Molex_PicoBlade_53261-0671_1x06-1MP_P1.25mm_Horizontal | J2 |
| 1 | RESET | maxlibrary:XKB_TS-1187A-B-A-B | SW1 |
| 1 | SN65HVD230 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | STATUS | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | TC2030-IDC-NL_ESP | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
It measures 71.2 × 66.1 mm and has 4 copper layers, 1.6 mm thick.
110 parts, built around the ESP32-WROOM-32E-N4, SN65HVD230D, LMR33630ARNXT and MFRC522. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the ios-cv/maxbox repository on GitHub, at the commit this page was made from: the board is electronics/v1/maxbox/maxbox.kicad_pcb and its schematic electronics/v1/maxbox/maxbox.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the AGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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