badgy

Details

Badgy - a rechargeable coin cell powered ePaper display with WiFi connectivity

Uses:

smart home remote
badge/name tag
weather forecast
news feed & notifications
scoreboard
smart home dashboard / remote
deauther
anything that you can do with an ePaper display + ESP8266

Hardware Features

2.9" 296x128 ePaper display
WiFi connectivity
Rechargeable coin cell battery (LIR2450) w/ USB charging
5-way tactile switch for user input
Magnetic Clasp
Easy to solder 0805 footprints (most parts)
Compact design 3.9cm x 9.6cm (~ 1.5" x 3.8")
Lightweight 29g (~ 1.0oz)
Battery Life
- Deep Sleep ~35 days
- Light use ~21 hours
- Heavy use ~5 hours

Software Features

WiFi Manager GUI
Toggle WiFi On/Off, Sleep Modes
Over-The-Air updates
WYSIWYG Designer Web GUI (WIP)
Arduino Compatible
IFTTT

Components

1 × 2.9" E-Paper Display 296x128

1 × ESP-12 Module

1 × Rechargeable Coin Cell LIR2450

1 × 5-way Tactile Switch

1 × USB Connector

Discussions

Avi Cohen wrote 09/28/2019 at 16:02

Is this an open source project ?

Are you sure? yes | no

Gigawatts wrote 07/27/2018 at 20:28

Are there any spare GPIO on this board for adding additional parts, such as I2C sensors, IR emitter, etc?

Are you sure? yes | no

Thorsten wrote 07/09/2018 at 07:07

Hi w4ilun, great project. Are the PCB designs available for download? Or do you know when they will be available again on Tindie. thanks

Are you sure? yes | no

Mathias wrote 09/24/2018 at 20:32

I am interessted in the kicad files too.

Are you sure? yes | no

nerd wrote 01/01/2018 at 21:42

in my opinion to less button, 3 or better 4 is perfect. (meybe 2 button and joistick or potentiometer? cylineder)

second trouble is power. Is possible to using AA recarchable accumulators?

other functionality ok

Are you sure? yes | no

Dennis wrote 12/31/2017 at 23:57

I really like your project, and thanks for making it open-source! I've built a modfied one with a non-rechargeable battery (2032) and the buttons on the back, so it looks more like a name badge.

Are you sure? yes | no

w4ilun wrote 01/01/2018 at 06:35

Great to hear you liked it and made a modified version! How is it with the 2032, did you have to use a boost converter or does it work with 3V?

Are you sure? yes | no

Dennis wrote 01/01/2018 at 14:36

i replaced your charging circuit with a small boost pcb from pololu (U1V10F3), because i think the ESP needs stable 3.3V.

Are you sure? yes | no

hackaday wrote 12/31/2017 at 17:45

Have you found the e-ink displays to be fragile? I've had bad luck with them. They seem to stop working at the slightest bump and the glass they are made with is super-thin. I think definitely it needs to be behind a piece of plastic.

Are you sure? yes | no

w4ilun wrote 12/31/2017 at 18:25

I got my e-paper module from Good Display and they seem pretty robust, though an acrylic case would be nice (e.g. 3 layer sandwich). Wish you better luck with these display modules!

Are you sure? yes | no

Enes wrote 12/30/2017 at 18:11

This can prove useful in situations where electricity is not always fed into a system but the outputs should be able to be read at any time.

Are you sure? yes | no

rafununu wrote 12/29/2017 at 12:51

That's very interesting and needs a closer look. Apart from that it seems you're living in a cold country !

Are you sure? yes | no

w4ilun wrote 12/31/2017 at 18:21

Pretty cold this week in NY!

Are you sure? yes | no

badgy

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