Category Archives: Technical

433Mhz Still crashes

Posted on October 12, 2017 by larry

Something causes the 433Mhz to crash. Kind of frustrating.  Could be the reset I have in place, maybe I do not have the proper resistors. Also tired, been busy day. Need a break.

Posted in Technical, Training | Leave a comment

Secondary 433Mhz Transmitter

Posted on October 11, 2017 by larry

Getting a secondary transmitter up.  The other one seems to go offline, hoping the new one works better. Initially it works, hopefully it works tomorrow.

Posted in Arduino, Technical, Training | Leave a comment

433Mhz Small Package

Posted on October 7, 2017 by larry

I like this setup. It is small and uses less parts.  I can pass on the cheaper modules if I need to.  It is so much easier to set up, it is worth the higher cost.  

Posted in Arduino, Technical, Training | Leave a comment

Web Configured 433Mhz Gateway

Posted on October 6, 2017 by larry

This is fun, I finally got the device to configure via web page. I was able to get this working right. Looks good, cleaning up the code to get it to work with some errors.    

Posted in Arduino, Technical, Training | Leave a comment

Using a Superheterodyne vs Super-regenerative

Posted on October 5, 2017 by larry

Recall my past few posts and I been mentioning the use a of a 433mhz receiver. On this picture the three on the left are Superheterodyne and the one on the right is a Super-regenerative The superhet is supposed to be better … Continue reading →

Posted in Arduino, Technical, Training | 6 Comments

Kits For Sale

Posted on October 4, 2017 by larry

Soon. I need to start off simple, but I have a feeling things going to move fast and I need infrastructure. Where to sell, (offerup, craigslist) How to take payments How to market My supplies. I think tomorrow I will … Continue reading →

Posted in Arduino, Technical, Training | Leave a comment

433Mhz Gateway BOM

Posted on October 3, 2017 by larry

Here is the bill of materials for the 433Mhz Wemos Gateway, prices are from ebay US Sellers. Wemos D1 Mini           7.85 400 Tie point (half) breadboard           5.09 433Mhz Receiver           5.15 2n7000 mosfet           0.15 2x 10k Ohm … Continue reading →

Posted in Arduino, Technical, Training | Leave a comment

433Mhz Gateway ESP8266

Posted on September 27, 2017 by larry

I am thinking of putting together these instructions on how to build these things. Little note though, the one pictured above is for 315Mhz, 433Mhz ones are on the way. Hopefully will have a how to on these in the … Continue reading →

Posted in Technical, Training | Leave a comment

External 433Mhz Sensor

Posted on September 22, 2017 by larry

Trying to get an outdoor 433Mhz sensor working outside. Seems to not work, I am suspect there is just too much interference between the outside transmitter and the receiver. There are a few things I would like to try, but … Continue reading →

Posted in Technical, Training | Leave a comment

I thought it was me

Posted on September 15, 2017 by larry

I was trying to get the 433Mhz receiver to work with the ESP8266. Apparently, the issue is that there is a strict timing issue and stuff needs to come from RAM. Here is the article https://github.com/sui77/rc-switch/issues/46 So it is not … Continue reading →

Posted in Arduino, Technical, Training | Leave a comment