More information

  • The Yayagram is a handmade product, each one is unique an different.
  • Because of the handmade nature you can customize it, contact me at if you have a special request.
  • If you want, I can configure the WIFI network the Yayagram is going to use, so I can ship it prefigured.
  • The Yayagram runs on a micro computer called Raspberry Pi Zero W.
  • The Yayagram uses “Telegram” to send and receive instant text and voice messages.
  • The Yayagram code is open, so feel free to change it and share the modifications with the community.


  • In order to use a Yayagram you have to have a WIFI 2.4 GHz available, 5GHz networks are not valid.
  • Users are going to sent text messages to the Yayagram via “Telegram“.  Telegram is an open source messaging application with IOS and Android clients.
  • If you don’t want me to pre-configure the WIFI 2.4GHz network you will need to do it yourself. Please follow the next steps:
    • Unplug the Yayagram device and extract the Micro SD card from the Raspberry Pi Zero W.
    • Connect the card to a computer using a card reader. The Yayagram includes a Micro SD to SD adapter to make this step easier.
    • At the root directory of the card, create a file called “wpa_supplicant.conf“. Be careful, make sure the file name is “wpa_supplicant.conf” and not “wpa_supplicant.conf.txt“.
    • Copy and paste the following content to the “wpa_supplicant.conf” file.
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
country=<Insert 2 letter ISO 3166-1 country code here>

 ssid="<Name of your wireless LAN>"
 psk="<Password for your wireless LAN>"

You must change the following fields:

      • “country=<Insert 2 letter ISO 3166-1 country code here>”: Choose your country code, so if you are in Spain it would match the following:  “country=ES”.
      • ssid=”<Name of your wireless LAN>”: Here you must write the WIFI 2.5Ghz network name. This is an example: ssid=”MYWIFI_H5V2″
      • psk=”<Password for your wireless LAN>”: The password of the WIFI 2.5Ghz network you want the Yayagram to connect to. For example: psk=”my_internet_password”
    • Save and close the file. Safely extract the SD card from the computer..
    • Introduce the Micro SD card in the Raspberry PI Zero W and plug again the Yayagram.
    • After a few minutes you should see a green LED light blinking, that means the Yayagram is connected to Internet and ready to work.