recreate.md

Recreate (WIP)

Building a Brick PCB

This guide shows how to build a battery-driven Brick PCB based on the ubiquitous Wemos/LOLIN D1 Mini, that allows swapping out accessories (sensors, buttons, LEDs etc) as/when needed.

Parts

• LOLIN D1 Mini
• Dual Base
• Battery Shield
• 900mAh Lipo
• Accessory Shield

Prepare D1 Mini

1. Add male headers

Prepare Battery Shield

1. Connect A0-BAT jumper

2. Solder male/female headers to shield

3. Check battery power

• Connect a battery.
• Flash the D1 Mini with the LED example.
• Check reading from battery.

Assemble Dual Base

1. Connect D0/16 - RST on base

• Enables wake up from sleep.
• Use a cable or solder.
• Snip off any protruding ends.

2. Solder shield headers to base

3. Test sleep wake up

• Attach D1 Mini
• Test sleep:5 and see if it wakes up in 5 sconds.

4. Add female headers for accessory

Building a Brick case (WIP)

Snip off headers

Insert and connect battery

Insert base

Add screws

Add button

Connect button wires

Close lid

Software (WIP)

A couple of ways to get up and running with Node-RED and MQTT:

• FlowForge for a hosted solution.
• Docker image on a Raspberry Pi using f.ex. Balena.
• IOTstack on a Raspberry Pi