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Posts Tagged ‘esp8285’

USB Fun – Tiny USB WiFi and Hub Boards and micro USB Hub

September 1st, 2016 11 comments

I’ve come across a few interesting tiny USB boards and hubs in the last few days, so instead of writing a post for each, I’ve gathered all info into a single article.

Small ESP8285 USB Board

A couple of weeks ago, CNLohr released his first ESPUSB virtual USB implementation for ESP8266 allowing to use USB with external hardware, barring a resistor, and only two GPIOs. He has now made a tiny board based on ESP8285 with a USB interface leveraging ESPUSB.

ESP8285_USB_BoardHardware files can be found on github. So what can you do with it? CNLohr leveraged the work of the community in order to emulate a keyboard and mouse using a smartphone.

The only bit of bad news in the video is that finally USB full speed (12 Mbps) can’t be supported.

NanoUSB Hub Board

Mux wanted to add more USB devices to its tablets, but there was none free, so he decided to create a USB hub board small enough to fit inside tablets and called it NanoUSB measuring just 12x12x1.5mm, and provides two USB ports from one USB host port in the target hardware.

Tiny_USB_Hub_PortHe could use it to add a Bluetooth USB dongle inside Cube i7 Stylus tablet as shown in the video below.

You can find documentation on Muxtronics, and purchase the board on Tindie for $8.90 + shipping.

Micro USB hub

Smartphones usually only have one micro USB OTG port or USB-C port, but for example if you want re-purpose your smartphone for other tasks, or want to use a USB device while charging your phone, you’d need a hub connected via a USB OTG adapter. Another solution is to directly use a micro USB hub with 3 USB ports and one micro USB port which I found on DealExtreme for $4.71 including shipping.

 

micro-USB-hub-smartphoneIt could also be useful for Raspberry Pi Zero board for example. If you have a more recent device with a USB-C connector you might consider a USB-C to USB hub instead. DX sells one for $5.12.

Categories: Espressif, Hardware, Video Tags: esp8285, hack, hardware, usb

PSF-A85 is a $2 ESP8285 WiFi Board for IoT and Wearables

July 15th, 2016 5 comments

Last month, we found out that Espressif has made a smaller version of ESP8266 targeting wearables called ESP8285, but the only development board available at the time was quite more expensive than usual at about $25. ITEAD has now released an ESP8285 module with some I/Os and an IPEX connector which they sell for just $1.99 + shipping.

ESP8285_WiFI_Module

PSF-A85 specifications:

  • SoC – Espressif ESP8285 Tensila WiFi SoC @ 80/160 MHz with 1MB flash
  • Connectivity
    • WiFi 802.11 b/g/n/d/e/i/k/r with support for STA/AP/STA+AP modes, WPA/WPA2 PSK and WEP security
    • Antenna – IPEX connector (antenna not included) or “stamp hole interface”
  • Expansion – 24-pin with GPIO, PWM, UART up to 460800 bps, SPI, ADC,
  • Power Supply – 3.3 V
  • Dimensions – 13.7 x 13.4 mm
Click to Enlarge

PSF-A85 Schematics – Click to Enlarge

More technical information include the schematics (PDF only) and ESP8285 datasheet can be found in the Wiki, which sadly does not contain any software / getting started information, but those should be the exactly same as for ESP8266.

Thanks to Nanik for the tip.

Espressif ESP8285 is just like ESP8266 but with 1MB built-in Flash, and Designed for Wearables

June 22nd, 2016 1 comment

Espressif announced ESP8285 WiFi SoC was entering production last March. The new processor is based on ESP8266, but the company added 1MB built-in flash to make the solution smaller, and more suitable to wearables such as smartwatches and activity trackers.

ESP8285

A.I. Thinker ESP8285 Module

ESP8285 features a Tensilica L106 32-bit MCU and another ultra-low-power 16-bit RISC core, as well as 802.11 b/g/n/d/e/i/k/r WiFi connectivity. AI Thinker has already produced a tiny module based on the solution, called ESP-8285, and another person has developed an ESP8285 development board sold on Tindie for $24.95, and with some code sample (Arduino sketches) on Github.

ESP8285_Development_Board

Espressif ESP8285 Development Board

You’ll also find some more technical information on a Devacron blog post, or inside the datasheet on Espressif website.

ESP8285 Block Diagram

ESP8285 Block Diagram

Via Hackaday