It used to be something of an electronic rite of passage, the construction of an FM bug. Many of us will have taken a single RF transistor and a tiny coil of stiff wire, and with the help of a few passive components made an oscillator somewhere in the FM broadcast band.
Valerio Backslashnew has designed a small dock for the Onion Omega 2 and 2+:
I needed the smallest dock i could do, that featured:
- Type A USB host
- Micro USB for power
Here’s what i came up with, i called it dock\new.
It has an onboard linear voltage regulation (i didn’t bother going with a switching one for such low power), magnetics integrated in the RJ45 connector to save space, USB host ESD protection (diode array), USB host PTC fuse.
On the left side there is the RJ45 connector and nothing on the back side of the board, so that you can easily access the MicroSD card on the Omega 2+.
On the right side (the antenna side of the omega) you have the USB type A connector, facing outwards, and the microusb connector for power, facing inwards.
The project is open source (CC-BY-SA 4.0), and the KiCad schematics, board layout and the other files are available on GitHub:
5N44P has shared the board on OSH Park:
Hey guys! In this tutorial we’ll be creating a GPS tracker using the Botletics SIM7000 LTE shield and an Arduino and view the data on two free IoT dashboards. I’ll start off by explaining how to get everything set up and posting data to the cloud, then I’ll move into how to set up the IoT dashboards to view data. The two dashboards we will be looking at are Freeboard.io and ThingsBoard.io.
Since this tutorial is a follow-up of my first Instructable on using the Botletics LTE/NB-IoT shield for Arduino so if you haven’t already, please read it to get a good overview of how to use the shield and what it’s all about. In this tutorial I’ll focus on IoT data logging, and specifically, GPS and temperature tracking and provide you will all the code and guidance you’ll need to hit the road and test it out! It’ll be a decently lengthy tutorial so sit tight and grab some coffee!
Although I’ll be mainly focusing on the LTE shield that I personally designed and built, everything here (including the Github Arduino library) should work on SIMCom’s 2G and 3G modules like the SIM800/808/900/5320 as well since it’s just an updated version of the Adafruit FONA library. Regardless of hardware the concept is exactly the same and you can do lots of cool stuff with this, including sensor data logging, remote weather monitoring, auto theft karma GPS tracking, etc… so read on!
The design files and source code are available on GitHub:
GReynaga has shared the board on OSH Park:
Oshwi Badge HACKSTER Version Rev 1
SoftRF is an open project for aircraft collision avoidance avionics and has designed an adapter for RFM9x to fit NRF905 module dimensions and pinout:
SoftRF has shared the board on OSH Park:
From Timothy Woo on Hackaday.io:
This open-source LTE shield uses SIMCOM’s SIM7000-series modules with the latest LTE CAT-M technology to allow Arduino users to painlessly connect their low-power IoT devices with the next-generation cellular technology!
NB-IoT is also available for many countries (but sadly not in the USA yet) simply by swapping out to a different SIM7000 module version. Luckily SIMCOM made it super easy to integrate this module because most of the AT commands are identical to previous version, and Adafruit has a wonderful library for their FONA 2G and 3G products. Check it out and help make this happen!
You can view the latest code and design files here on my Github page: https://github.com/botletics/NB-IoT-Shield. Note: The hardware works great but software is still under development! I plan on launching an Indiegogo campaign when I get a fully-working prototype, so stay tuned for updates!
[visualkev]’s friend was putting on his own fireworks show by lighting each one in turn, then running away. It occurred to [visualkev] that his friend wasn’t really enjoying the show himself because he was ducking for cover instead of watching the fun. Plus, it was kind of dangerous. Accordingly, he applied his hacker skills to…