Not a smart way to connect Easy Radio modules!
ER900TRS: An extremely smart little module.
You just give it some volts, and a serial string, and it transmits it over air to another ER900TRS. This one can be pretty-pretty far away if you have an antennae - and it willoutput the serial string.
It cannot be more easy to communicate ASCII from one microcontroller to another!
But they are quite expansive, and so I thought instead of usin a new one for each project, I would make some sort of hook-up-system with old IDE-PC-cables..
Idea was that I should just solder the cable, and then insert the module when needed here and there..
This is not a good idea.
Darn thing does not connect very well that way, and so I spend hours and hours bugtracking on the dumb strings that did not come in right :D
Liiiitle looose connections, all the time.
This is how to do it:
I found out that one can just de-solder the pins rom the module, and add some wire. Stick some ffemale headers to the wire, and you are go to insert radio-transmission in 2 minutes on any standard project board :)
Nice Tip
Hi Alseides,The reason for
Hi Alseides,
The reason for my interest in the ER modules was in fact the RSSI:
I wnated to build robots that I could "remote" this way:
* Come to me
* drive away from me
apart from that, they should be autonomous. Also i could use this to make 2 robots chase each other etc.
What I found was that the ER-modules are a fantastic tool.. But the RSSI is just a blurry, messy signal not suitable for anything than testing different areals / antennaes on long distances, optimising for long distance etc. And hardly that, as a matter of fact.
So.. If you had the same thoughts, we are two who are still searching for a way to easily and simply approxymate distance to another circuit.
But - what are your problem excactly, I am just going on about my own life here ;)
/ Frits
Hello, I'm Yoppy from
Hi Yoppy,Your english is
Hi Yoppy,
Your english is better than mine ;) - And I do understand your questions. However, it would take me half a day to come up with an answer, and that is simply too much - I have my own stuff to try to build.
I am happy to answer questions regarding things I have made, and made instructions on, but here we are talking third party, and I can only hope someone else is just working with these modules, are into them right now, and will answer you - I am somewhere else right now, sorry ;)
Best of luck, perhaps you should ask in the forum, make a new topic, and wait for someone to answer. This post is really just about the not-smart way of connecting..
/ Fritsl
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