2 layers
Sensors
LeHack/SPSP
Particulate matter pollution monitoring system (:poland: System Pomiaru Stężenia Pyłu w powietrzu)
8 parts3
2 layers
Display and comms
LeHack/SPSP3Particulate matter pollution monitoring system (:poland: System Pomiaru Stężenia Pyłu w powietrzu)
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 44
- Pads
- 154
- Tracks, vias
- 361, 16
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 2 Mar 2019
- Updated
- 8 Dec 2022
Overview
Display and comms is an open-source printed circuit board by LeHack, from the LeHack/SPSP repository on GitHub. It is a 2-layer board with 27 parts on 44 nets, routed with 361 tracks and 16 vias.
It is built around the RN4020-V/RM, 74HC14 and 74HC238D, with the 74HC4066D and 74HC595 among its other parts. Its parts include 13 resistors, 6 ICs, 2 capacitors, 2 connectors and 2 switches. It belongs with the radio and wireless and fPGA and programmable logic boards and the FPGA and CPLD boards of this library.
Main components
5RN4020-V/RM
SMD7.5dBm OTA (Over-The-Air) upgrade、Encryption function SPI、UART、AIO、PIO SMD Bluetooth Modules ROHSMicrochip TechnologyBluetooth Modules
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters
74HC238D
SOP-16SOP-16 Signal Switches, Multiplexers, Decoders ROHSMDDSignal Switches, Multiplexers, Decoders74HC4066D
SO-14-40℃~+125℃ 15ns 1:1 25ns 2V~10V 38ns 4 54Ω 8pF SOIC-14 Analog Switches, Multiplexers ROHSNexperiaAnalog Switches, Multiplexers74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
README
hardware/README.mdSPSP - Hardware
One of the goals of the project was to make it modular and easily fittable into a housing (in order to protect the electronics from weather elements).
Therefore I designed two easily detachable (via flat cable) PCBs:
-
sensors PCB - for all the sensors to be joined together (excluding the PM10 sensor, which is attached via a separate cable, due to the nature of PM10 measurements)
-
display and comms PCB - for the display (of own design), input switches and a communications module
Sensors
Display and comms
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 220 | Resistors_SMD:R_1206_HandSoldering | R3, R7, R8, R9, R10, R11, R12, R13, R14 |
| 4 | 10k | Resistors_SMD:R_1206_HandSoldering | R4, R5, R6, R15 |
| 2 | 100nF | Capacitors_SMD:C_1206_HandSoldering | C4, C5 |
| 1 | 74HC14 | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | U5 |
| 1 | 74HC238 | Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm | U6 |
| 1 | 74HC4066 | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | U8 |
| 1 | 74HC595 | Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm | U7 |
| 1 | B_NEXT | Buttons_Switches_THT:SW_PUSH_6mm_h8mm | SW2 |
| 1 | B_PREV | Buttons_Switches_THT:SW_PUSH_6mm_h8mm | SW1 |
| 1 | FJ-5461BH | footprints:FJ-5461BH | U9 |
| 1 | FPGA Connector | Pin_Headers:Pin_Header_Straight_2x07_Pitch2.54mm | J5 |
| 1 | LED | LEDs:LED_1206_HandSoldering | D1 |
| 1 | Power | Connectors_JST:JST_PH_B2B-PH-K_02x2.00mm_Straight | J4 |
| 1 | RN4020 | footprints:RN4020 | U4 |
The 26 most common of 27 parts.
Questions
What parts does the Display and comms use?
27 parts, built around the RN4020-V/RM, 74HC14, 74HC238D and 74HC4066D. 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 Display and comms KiCad files?
From the LeHack/SPSP repository on GitHub, at the commit this page was made from: the board is hardware/display_and_comms.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Display and comms design in my own project?
Its repository states no licence, so its author keeps all rights: ask LeHack before reusing the design.
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