Editor Version ×
Standard

1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

Profession

1.Brand new interactions and interfaces

2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

4.For enterprises, more professional users

Std EditionNAM 0.3 Hardware SDS011 Reseter

Profile:Hardware power cycler/reset for SDS011 dedicated for use with Nettigo Air Monitor 0.3

License: TAPR Open Hardware License

Published Time:2021-07-23 22:20:52
  • 617
  • 0
  • 0
Description

During our extensive use of SDS011 in NAM sensors we encountered some problems. Sometimes SDS011 hangs and become unresponsive. UART communication doesn't work at all. Our research shows that the reason is probably because of bugs in it's firmware. Only working method of restoring communication is to power off the SDS011 for couple seconds. Because in remote location it's usually impossible to cut the power off, we design this module to automate this task.

This module is plugged directly to EXT port of Nettigo Air Monitor 0.3. On board you will find PCF8574TS communicating via I2C on 0x26 address. Channel P0 controls power delivered to SDS011 connector. Ports P1-P7 may be used for other purposes in future as GPIO over I2C.

If you need one, you can build it by yourself or buy one at Nettigo.eu.

Compatibility:

  • The module is compatible with all NAM versions equipped with an EXT connector (from version 0.3.2 and above).
  • The module is compatible with HECA and HECA 2.
  • The module is compatible with the LED bar.
  • In the standard configuration, the module CANNOT be used together with the 4x20 LCD screen. It is possible to use IDC16 tape to connect the module and hot glue for mechanical assembly, but this is untested and requires a bit of DIY :)
  • The module has an EXT pass through connector, so theoretically you can still use CO2 sensors and GPS receivers, of course, if you find a place for them in the enclosure.
Documents

NAM SDS011 Hard Reset

Open in editor

NAM SDS011 Hard Reset

Open in editor
ID Name Designator Footprint Quantity BOM_Supplier
1 100nF C1 0603 1 LCSC
2 2.54-5P CN1 CONN-SMD_2.54-5P-WT 1 LCSC
3 DS1023-2*8S21 H1 DS1023-2*8S21-EDGE 1 LCSC
4 HDR-IDC-2.54-2X8P H2 HDR-IDC-2.54-2X8P 1 LCSC
5 Green LED1 LED0603-R-RD 1 LCSC
6 BC817 Q1 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR 1 LCSC
7 FDV304P Q2 SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR 1 LCSC
8 1K R1 R0603 1 LCSC
9 10KΩ R2,R3,R13,R14 0603 4 LCSC
10 PCF8574TS/3,118 U1 SSOP-20_L7.5-W5.2-P0.65-LS8.0-BL 1 LCSC

Unfold

Project Attachments
Empty
Project Members

服务时间

周一至周五 9:00~18:00
  • 0755 - 2382 4495
  • 153 6159 2675

服务时间

周一至周五 9:00~18:00
  • 立创EDA微信号

    easyeda

  • QQ交流群

    664186054

  • 立创EDA公众号

    lceda-cn