This is a small pcb with ATMega328p and BlueTooth HC-05
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I just did a quick Google search for FT232RL ... the only sources are > 3€.
So how it is possible to sell a
at 1,59€ with free shipping?
For me the BOM would be something like 7€ + production + shipping + gain.
Until now it was not my Main Idea for this Board but in fact Datalogging is also a nice choice ;-)
I created a simple programm to read data from A0 and send it cyclically by Serial.
The intent of the Parameters is to calibrate the readout using some voltage reference values.
Simply note them in Excel and then calculate the correction equation.
The "GUI" is a weng German this time ;-)
Please find some code below :-)
I'm not sure, is it possible that there is no really good complete ESP8266 Tutorial in the Internet?
I tried it this way:
But till now no success :-(
Does somebody have some advice?
I recently found the RN4020 - Looks like an awesome module:
Perhapps it would work more like i wanted and also is better sourceable ;-)
So obviousely the next step would be to create an app there for.
But I'm not motivated at the moment :-/ too bad...
Well there it is ... the Hardware ;-)
Designed in December 2000 and 13...and delivered a bit longer than a year ago.
On the plus side:
+ at least the serial connection via BlueTooth works.
+ It has a LM7805 Footprint
+ It has a mostly working EGBT-045MS
+ I can control LEDs via my Smartphone and a nice App "Bluetooth spp pro"
+ Arduino compatible
+ Convenient half euro card size
+ Footprint for FT232RL (also working ;))
On the minus side:
- can't get the BT Module to work as Master/Server
- no foodprints for SMD-keys
- No good capability of stacking other boards :-(
In general my Idea was to use a BT Master Module (Tried with EGBT-045MS (as i assumed)..)
I thought it would report identificable BT Devices. Somehow it nearly doesn't respond anymore if i set it to Mastermode and Inquire.
After Getting the BT ID, i would check if the RSSI is over a certain threshold and enable a Button to unlock the door... But first i have to find an other BT Master module or get it running ...
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Transistors should not be connected directly to logic level. They would clamp those signals to around 0.7V (or so). Might want to add a series resistor (e.g. 10K) to their base.
Are you sure? yes | no
Thank you. I used BCR562 [http://www.infineon.com/dgdl/Infineon-BCR562-DS-v01_01-en.pdf?fileId=db3a30431428a37301144082f4ed030d] with internal Resistors.
Ah "Digital Transistors". That should be fine.
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