Maybe you found this campaign on kickstarter with Arduino.
Modular development board which you can manage.
You can program it through grapical IDE and the project share to Arduino Cloud.

The choice of modules is very big. One module includes three sub-modules.
Fitness Monitor - GPS, OLED a Touch module
Seismic Detector - Motion, RGB LED, Buzzer module...

Developers which created Codebender, online IDE for programming of Arduino, launched kickstarter campaign for expansion of this IDE for very popular wireless chip ESP8266 (WiFi) and ESP32 (WiFi and BT)...

So, we have next single-board computer, which wants your interest and gets community for expansion.
Single-board computer which called MiQi with credit card size.
CPU RK3288 by Rockchip company (quad-core up to @1.8 GHz) provides more power for different projects.
CPU RK3288 contains FPU coprocessor...

After long time, we share interesting DIY project.
SumoCHIP is a project of robot, where the main component is very popular single board-computer C.H.I.P. computer.
You can find schematic, firmware and tutorial how to make robot on there website...

A lot of single-board computers have 64bit core, 1GB RAM, pin header with Raspberry Pi pinout etc, but I'm missing features like SATA and another. Globalscale Technologies made a new SBC with SATA bus. And more, also added USB3.0 and Gigabit ethernet for $39...

STMicroelectronics and Semtech released a new development board for IoT (Internet of Things).
The development board is designed for LoRaWAN™ network and it supports A and C classes.
The package includes two parts - boards. The first board contains Nucleo-64 development board with STM32L072 microcontroller and the second board contains LoRa™ module....

I received this message, after ordering of Orange Pi One for $3.69:
Dear Petr,
Thank you so much for shopping at our site.

We are extremely sorry to inform you that we experienced a system error regarding the Orange Pi One Learning Development Board. It shows wrong price on our website.

In this situation, we have to cancel your order and process you a full refund.

1.For PayPal refund, please allow up to 48 hours for the transaction to appear on your Paypal account.

You can view the status of your refund from your Account History.

> Log in to your PayPal account.

> Click History

If you do not have a Paypal account, please allow up to 7-14 business days.

2.For credit card refund,it may take up 7 to 14 business days to appear in your account.

This delay entirely depends on your credit card company and its intermediaries.

Once again, we very much regret this unforeseen situation. Please accept our unreserved and sincere apologies for any inconvenience caused. We hope that we can serve you again in the very near future.

Best Regards
Everbuying Customer Service
http://www.everbuying.net/

I wrote a news about SiPy (SiPy - Sigfox, WiFi, BLE), pycom.io released a new development board called WiPy 2.0.
Development board with ESP32 od Espressif (we can expect a lot of new developmnet boards with ESP32 in a few weeks)
pycom.io writes that the range of signal is up to 1km...

I found very interesting device. It combines all of popular wireless technology.

SiPy. The device is based on ESP32, for faster development of your project.

It combines wireless technology like WiFi, BLE (Bluetooth Low Energy) and Sigfox which is used for IoT (Interent of Things)....

I updated the article about CHIP computer and webcamera. I added tutorial how to make a video. This article you can use with Raspberry Pi, Banana Pi, BeagleBone and another. Tutorial for forks of Debian, Ubuntu and another.

Article there: https://time4ee.com/articles.php?article_id=31

So, cnx-software.com shared news about new version of very popular single-board computer.
pcDuino in version 4. pcDuino4 is not available to sell. It's only desing of new version pcDuino.
What we can expect? Maybe:

- SoC – Allwinner H3 quad core Cortex A7 @ 1.2 GHz with an ARM Mali-400MP2 GPU up to 600 MHz
- System Memory – 1GB DDR3 SDRAM
- Storage – micro SD card slot...

CHIP computer contains I2C bus. You can connect a lot of sensors like temperature sensors, magnetometer, accelerometer. The sensors have to contain I2C bus of course.
In this article, I show you how to do it.

The article there: https://time4ee.com/articles.php?article_id=32

Make other electronics device for your development.
Tiny DDS generator. That's device which generates signal.

Project there: http://www.electronics-lab.com/project/tiny-dds-open-source-dds-generator/

We know the CHIP computer, we connected to WiFi, we used UART, we tried WiFi speed connection and USB flashdisc, we measured power consumption during the boot and after boot and we blinked with LED.
Today, we use USB webcam. At first I wrote that's very easy and you can you use it for a Raspberry Pi Zero, a Raspberry Pi, a BeagleBone, an Odroid and another SBC's, where you use a debian or fork of the debian (an ubuntu, a minibian etc.). It's very simple.

The article there: https://time4ee.com/articles.php?article_id=31

The name of Teensy is well-known.
After Teensy 1.0 and 2.0, which included microcontroller by Atmel company (AT90USB162 v1.0 and ATMega32U4 in v2.0) came the first kickstarter's Teensy 3 in 2012. It included 32 bit microcontroller.
Then (2014) the world saw Teensy 3.1 and 3.2.
If you still don't know what Teensy is, so, it is development board which is supported in Arduino IDE...

I found my small project - actually one bash script. You can use it for uploading your *.bin file (from your IDE) to Maple Mini.
Instructions:

https://time4ee.com/articles.php?article_id=30

EasyEDA. It is a free web-based tool for schematic capture, PCB layout, and circuit simulation. The best part of any cloud- or web-based development tool is that it runs on a remote server (no worries to install on local machines), always up to date, and is accessible from anywhere through internet. EasyEDA is a zero-install cloud-based EDA application; all you need is a web-browser and internet connection and you are ready to draw circuits, run SPICE simulation, design PCBs, and even place an order for fabricating PCBs. I have a very pleasant learning experience playing with it for a couple weeks and I found the learning curve wasn’t too steep.

https://time4ee.com/articles.php?article_id=29

Espressif released first version of datasheet for ESP32 module.
ESP-WROOM-32 is powerful WiFi-BT-BLE MCU module with target get a lot of makers and designers.

Module integrates Bluetooth, Low Energy Bluetooth (BLE) and WiFi. ESP32 chip contains 2 CPU, which could be individually controlled. Clock frequency can be adjustable from 80 MHz up to 240 MHz. The user can off CPU and use only low-power coprocessor for monitoring of peripherals and wakes up CPU after crossing of threshold or peripherals activity ...

The website http://www.cnx-software.com shared very interesting news. The Alternative to very popular WiFi chip - ESP8266 (ESP-12, ESP-01 and another.) which is called RTL8710.
Generally, we can say that ESP8266 (and modifications of this) is the most popular WiFi chip ever, hence the ESP8266 has huge community support.
If you use the ESP8266 maybe you found limits of this component and so Espressif Systems released new WiFi chip - ESP8285. Website hackaday.com wrote that's ESP8266 killer. Nevertheless, check this very interesting WiFi chip - RTL8710 by Realtek company.
...

Onion Omega2 caused interest by makers and developers. So, I found a few videos (tutorials) about that on youtube. I hope it could help you with your decision if you buy that or how to begin. Videos are about - Onion Omega....