====== Wireless Module  for MaxxFan  (G6L-1P relays) ====== 

This module uses G6L-1P relays - and its design is inspired by [[https://www.youtube.com/watch?v=aS3BiYaEfiw&ab_channel=Everlanders|Everlanders Automation projects (video)]] ([[https://everlanders.com/2020/04/06/automation-arduino-and-blynk/|Project Home page]]), where a Wemos D1 mini wireless remote control option is added to the MaxxFan in the Everlander rig. 

In the Everlander project G6L-1P relays are used, so this PCB also uses G6L-1P relays.

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   * Here is a [[esp8266-d1-mini-maxxfan-a|similar PCB design]], but it uses G6K-2P relays 
   * Here is a [[esp8266-d1-mini-8x-relay-shield-a|general PCB design]], that can hold up to 8 mini relays

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**Project Status:** PCB design verify (rev.A1 - 2023 May 16)


Here are some screen shots: 

   * TOP side
   * {{:wemos-d1-mini-esp8266:maxfan-module-b-top.jpg?400|}}

   * Bottom Side
   * {{:wemos-d1-mini-esp8266:maxfan-module-b-bot.jpg?400|}}


//Notes about un-knowns://     
  * I do not know if the numbering (1-8) is similar to the actual MaxxFan. This needs verification.
  
Use the PCB viewer if you would like to see/test the entire copper path as it switches sides and/or connects to several solder points. 
   * Link to Free download of the [[https://www.electronic-software-shop.com/lng/en/support/free-viewer-software/?language=en|Sprint-layout Viewer program]]
   * {{:wemos-d1-mini-esp8266:relay-module-b.zip|The PCB design file}} (Status is: PCB UN-tested)

**Chips:**

//Miniature relay G6L-1P// 

{{:wemos-d1-mini-esp8266:g6l-1p.jpg|}}

Datasheet: {{ :wemos-d1-mini-esp8266:omron_g6l-1-relay.pdf |}}

//ULN2803a Darlington Transistor Array//

(Top View)

{{:wemos-d1-mini-esp8266:uln2803.jpg?200|}}

Datasheet: {{ :wemos-d1-mini-esp8266:uln2803a.pdf |}}