2 layers127 × 71 mm
2 layers77.6 × 108 mm
BTMessBox
hbend63/Mesknecht236-Channel AD-Converter Adapter for 4-20mA or 0-10V Measurement-Units
- Size
- 77.6 × 108 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 73
- Pads
- 244
- Tracks, vias
- 597, 25
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 10 Aug 2023
- Updated
- 29 May 2024
Overview
BTMessBox is an open-source printed circuit board by hbend63, from the hbend63/Mesknecht23 repository on GitHub. It is a 2-layer board of 77.6 × 108 mm with 75 parts on 73 nets, routed with 597 tracks and 25 vias.
It is built around the ESP32-DEVKITC-VE, MCP6044-E/P and MCP3208-BI/SL, with the AMS1117-3.3 and BAT54S among its other parts. Its parts include 34 resistors, 22 capacitors, 7 connectors, 6 ICs and 6 diodes. It belongs with the ESP32 boards of this library.
Main components
5
ESP32-DEVKITC-VE
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
MCP6044-E/P
PDIP-14-40℃~+125℃ 1.4V~6V 14kHz 15uV/℃ 170nV/√Hz@1kHz 1pA 1pA 20mA 3V/ms 3mV 4 600nA 75dB Built-in compensation、ESD protection Rail-to-Rail Input, Rail-to-Rail Output PDIP-14 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
MCP3208-BI/SL
SOIC-16-40℃~+85℃ 100kHz 12 1LSB 1MHz~2MHz 2.7V~5.5V 500nA 8 External SAR SPI Yes SOIC-16 Analog to Digital Converters (ADC) ROHSMicrochip TechnologyAnalog To Digital Converters (ADC)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BAT54S
SOT-231 Pair Series Connection 1V@100mA 200mA 2uA@25V 30V 600mA SOT-23 Schottky Diodes ROHSMDDSchottky Diodes
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R10, R12, R14, R16, R18, R19, R20, R21, R22, R23, R24, R33, R34 |
| 12 | 10nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16 |
| 6 | 10R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 6 | 150k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25, R26, R27, R28, R29, R30 |
| 6 | 490k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R9, R11, R13, R15, R17 |
| 6 | BAT54S | Package_TO_SOT_SMD:TSOT-23 | D1, D2, D3, D4, D5, D6 |
| 6 | JST-Bu | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J1, J2, J3, J4, J5, J6 |
| 3 | 10uF | Capacitor_SMD:CP_Elec_5x3 | C1, C2, C21 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4 |
| 2 | 2,2uF | Capacitor_SMD:C_1210_3225Metric | C20, C22 |
| 2 | 4,7uF | Capacitor_SMD:C_1210_3225Metric | C17, C18 |
| 2 | MCP6044 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U2 |
| 1 | 10 uF | Capacitor_SMD:CP_Elec_5x3 | C19 |
| 1 | 100R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | 820R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R32 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | ESP32-DevKitC | Espressif:ESP32-DevKitC | U6 |
| 1 | JST-BU | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | LM385S-1.2 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | MCP3208-BI/SL | MCP3208-BI_SL:SOIC127P600X175-16N | U3 |
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Questions
How big is the BTMessBox PCB?
It measures 77.6 × 108 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BTMessBox use?
75 parts, built around the ESP32-DEVKITC-VE, MCP6044-E/P, MCP3208-BI/SL and AMS1117-3.3. 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.
Where can I download the BTMessBox KiCad files?
From the hbend63/Mesknecht23 repository on GitHub, at the commit this page was made from: the board is BTMessBox/BTMessBox.kicad_pcb and its schematic BTMessBox/BTMessBox.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BTMessBox design in my own project?
Its repository states no licence, so its author keeps all rights: ask hbend63 before reusing the design.