DIY Projects

Two Hornbill development boards based on ESP32 (Crowdfunding)

Explore Embedded, the Indian manufacturer located in Bangalore, is launching a new range of development bords based on ESP32, the Hornbill ESP32 Dev and Minima. Explore Embedded offers this new development board based on the Espressif ESP-WROOM-32 module in the form of a participatory fundraising campaign on the Crowd Supply platform. There are already a lot of development boards but the Hornbill boards come up with very good arguments against the competition.

Hornbill ESP32 Dev

This first board solves the main defect of the current ESP32 boards, a width too large that makes use on breadboard almost impossible. This board is narrower. It comes close to the Arduino Nano V3 in terms of dimensions. The board is built around the usual ESP-WROOM-32 module. For the record, here are the main features:

1x micro USB port for programming and debugging. USB-to-serial converter CP21XX

Here the pinout

It is accompanied by a prototyping board, the Hornbill ESP32 Proto. The Proto is equipped with a microSD board reader, an RGB LED, a temperature and humidity sensor SHT31 (equivalent to the SHT30 of the shield Wemos presented in this article). The proto also has 6 slots for IR transmitter and 1 slot for an IR receiver. It is possible to solder the Dev directly on the Proto to gain in compactness.

Hornhill ESP32 Minima

The Minima is also built around the ESP-WROOM-ESP32 module but its design recalls the first LilyPad and LilyTiny boards (presented in this article). The connectors are located on the periphery as well as the connector for LiPo battery. It is intended for wearable applications. It is not equipped with a micro USB port for programming. It will have to go through an FTDI cable (which is much less practical, damage). The diameter is not indicated but according to the size of the ESP32 module, it should be around 35mm. The connector is on the top of the board (on the right in the picture). The Minima offers 15 wide connectors compatible with alligator clips (for focusing). The center hole allows circuits to be made using conductive sewing thread. Pins 13, 25, 26, 34, 35, 3 V3, GND, 23, 22, 21, 19, 18, 4, 2 and 15 are available.

The project is already funded, the minimum of $ 2,000 has largely been surpassed with over $ 5,500 in commissioned boards.The first boards will be delivered from June 5th. The Hornbill ESP 32 and Minima are available at $ 12 and the Proto at $ 15. A waterproof IP67 certified housing (dustproof and sprinklered) is priced at $ 15. The Essentials kit ($ 39) features the waterproof case, the Dev and the Proto. Finally, other kits are available. ($ 59), Hornbill OUR (Open Universal Remote) to develop a universal remote control (application delivered) at $ 39, Industrial Data Logger ($ 59 or $ 269 for 5 kits). Finally the Light kit ($ 79) which allows to create luminous environments using LED lighting. The source code of the project is available on GitHub here.

GitHub repos

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