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Introduction

How to build your own device

  • Read Hardware Overview below.
  • Print 3D-Case.
  • Connect antenna.
  • (Opt. - on Actor) Connect the keyboard to the ESP32 board. Read How to connect pins below.
  • (Opt. - on Actor) Connect the battery to the ESP32 board.
  • Upload software to ESP32 board. Upload .bin file from Releases to ESP32 board. This is only necessary when initializing. After that, you can update via WIFI. See Update-Doc.
  • (Alternative) Upload software to ESP32 board. Read Build and upload (single device) in Developer Overview.
  • When setting up the device for the first time, a configuration wizard is started automatically.
  • For some functions like Online Chat, Update-Check, WIFI, NTP-Time-Sync and in order to use Gateways the Independer must be registered. If you are not registered, it is only possible to communicate with other unregistered Independers. (Read below). Use this form to register your Independer.

No Independer Registration

If the Independer is not registered, it will not run through the official Independer community.

This means that you can only communicate with other Independers if they do not participate in the official community. Also the connection to the Independer Server for e.g. an update check or maintenance notes is not possible. In order to use Gateways and WIFI for e.g. NTP-Time-Sync, the Independer must also be registered.

Unfortunately, this is technically necessary at the moment to ensure that, for example, no ID has been assigned twice in the official community.

Technically, unregistered Independers use a different sync word in LoRa connections. This means that they can only be heard by other unregistered Independers.

Use this form to register your Independer.

Hardware Overview

  • Heltec ESP32 WiFi/LoRa v2 with OLED-Screen (SX1276 V2, 868-915MHz) (Amazon) (≈ 25 €)
  • (alternative) LILYGO TTGO ESP32 (LoRa32 V2.1 1.6.1 Version LoRa ESP-32 OLED 0.96 Inch SD Card Bluetooth WiFi Module (868 MHz) ) (Amazon) (≈ 27 €)
  • CardKB (U035, MEGA328P) (Distrelec) (≈ 7 €)
  • (alternative) CardKB (U035-B, V1.1 MEGA8A) (M5Stack) (tests pending, but looks compatible) (≈ 7 €)
  • Antenna Adapter (CAB.616) (Mouser) (≈ 4 €)
  • Antenna 1 (ANT-868-CW-RCL-SMA) (Mouser) (≈ 9 €)
  • (opt.) Antenna 2 (ANT-868-CW-RH-SMA) (Mouser) (≈ 10 €)
  • (opt.) LiPo Battery (Seamuing 3.7V 3000mAh) (Amazon) (≈ 10 €)

In total ≈ 45 - 55 € per device (without shipping).

Connect pins

Heltec Board

TTGO Board

Keyboard