2 layers50.8 × 76.2 mm
Breadboard-1
bicknell/DCC-Mobile-Decoder
DCC Mobile Decoder Reference Implementation Hardware & Software
76 parts14
2 layers50 × 50 mm
PolyPot
msplr/PolyPot1Main repository of the PolyPot semester project - yet another IoT device
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 27
- Pads
- 144
- Tracks, vias
- 281, 47
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 5 Nov 2017
- Updated
- 25 Dec 2017
Overview
PolyPot is an open-source printed circuit board by msplr, from the msplr/PolyPot repository on GitHub. It is a 2-layer board of 50 × 50 mm with 42 parts on 27 nets, routed with 281 tracks and 47 vias.
It is built around the ESP32-S3, BD6211F-E2 and PMV250EPEAR. Its parts include 11 resistors, 9 connectors, 7 capacitors, 5 ICs and 3 switches. It belongs with the ESP32 boards of this library.
Main components
3
ESP32-S3
QFN-56-EP(7x7)-40℃~+105℃ -98.4dBm 150Mbps 2.412GHz~2.484GHz 2.4GHz 21dBm 340mA 3V~3.6V 88mA SPI、USB、UART、ADC、I2C、I2S、PWM WiFi transceiver QFN-56-EP(7x7) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICs
BD6211F-E2
SOP-8-40℃~+85℃ 0uA 1 1A 1Ω 3V~5.5V Interleaved conduction protection、Current sensing/regulation function SOP-8 Brushed DC Motor Drivers ROHSROHM SemiconductorBrushed DC Motor Drivers
PMV250EPEAR
SOT-23-3-55℃~+150℃ 1 P-Channel 1.5A 2.5V 20pF 240mΩ@10V 40V 450pF 6nC@10V 890mW SOT-23 MOSFETs ROHSNexperiaMOSFETs
README
module/pcb/README.mdPolyPot Control Module PCB
Issues
- Button gpio 23 does not allow wakeup from deepsleep -> connect to IO15
- Soil moisture sensor pinout is wrong. FIX THE CABLE BEFORE CONNECTING!
- IO12 is not connected to SENSOR_ENn PMOS (typo in signal name)
- IO12 must not be pulled up during boot -> use IO25
- R1 and R11 need to be ~120 Ohm to have higher LED brightness
- Footprint of buttons RESET and PROG is too small
Images
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10k | Resistors_SMD:R_0603_HandSoldering | R3, R4, R7, R9, R10 |
| 4 | M3 | Mounting_Holes:MountingHole_3.2mm_M3 | J5, J6, J7, J8 |
| 3 | 100nF | Capacitors_SMD:C_0603_HandSoldering | C1, C4, C7 |
| 3 | 470 | Resistors_SMD:R_0603_HandSoldering | R1, R8, R11 |
| 2 | 1uF | Capacitors_SMD:C_0603_HandSoldering | C2, C3 |
| 2 | 4.7k | Resistors_SMD:R_0603_HandSoldering | R5, R6 |
| 2 | I_SENSE | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | JP1, JP2 |
| 1 | 10uF | Capacitors_SMD:C_0805_HandSoldering | C5 |
| 1 | 18k7 | Resistors_SMD:R_0603_HandSoldering | R2 |
| 1 | 1uF | Capacitors_SMD:C_0805_HandSoldering | C6 |
| 1 | AP7365-XXERG_SOT223 | TO_SOT_Packages_SMD:SOT-223 | U1 |
| 1 | BD6211F-E2 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U4 |
| 1 | Battery | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | BT1 |
| 1 | DC_WATER_PUMP | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | M1 |
| 1 | ESP-32S | ESP32-footprints-Lib:ESP-32S | U2 |
| 1 | HUMIDITY_CONN | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J3 |
| 1 | I2C_TEST | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J10 |
| 1 | LED_Dual_ACA | LEDs:LED_D5.0mm-3 | D1 |
| 1 | LOGO | PolyPot:PolyPot_13x20mm | G*** |
| 1 | MLX75305 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U5 |
| 1 | PMV250EPEAR | TO_SOT_Packages_SMD:SOT-23_Handsoldering | Q2 |
| 1 | PROG | Buttons_Switches_SMD:SW_SPST_EVQPE1 | SW1 |
| 1 | PROG/DEBUG | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | J2 |
| 1 | RESET | Buttons_Switches_SMD:SW_SPST_EVQPE1 | SW2 |
| 1 | S-5851A_SOT-23-6 | TO_SOT_Packages_SMD:SOT-23-6_Handsoldering | U3 |
| 1 | TOF_DIST_SENS | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J4 |
| 1 | USR_BTN | Buttons_Switches_SMD:SW_SPST_PTS645 | SW3 |
| 1 | V_BAT_1S | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J1 |
Questions
How big is the PolyPot PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PolyPot use?
42 parts, built around the ESP32-S3, BD6211F-E2 and PMV250EPEAR. 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 PolyPot KiCad files?
From the msplr/PolyPot repository on GitHub, at the commit this page was made from: the board is module/pcb/PolyPot.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the PolyPot design in my own project?
Its repository states no licence, so its author keeps all rights: ask msplr before reusing the design.
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