Wireless Remote Control Duplicator - the "fix"

 

I promised to write about a "fix". Unfortunately, I found no other fix than soldering on an external 433mhz transmitter. Here is the pictures from the job. It works perfectly, but looks ugly.

 I used a 433mhz transmitter I bought on ebay and the helix antenna i blogged about earlier.

Wireless Remote Control Duplicator

Bought on ebay as "Wireless Remote Control Duplicator Key Cloning Gate for Garage Door 433/315MHz"

Philips Electronic Basis LAB

Was in the basement looking for parts and found this kit I got as Christmas present from my parents when I was 10(?) years old. There are some parts missing but the main parts are there: 2 transistors, an op-amp and a variable inductor(?). I guess it would work if I tried to build something:-) Was thinking about ripping the op-amp, but I ordered some on ebay instead. So the kit got to live a little longer:-)

433MHZ Helical Antenna

Bought on ebay as "10pcs 433MHZ Helical Antenna for Arduino Remote Control".

Can use instead of 17cm straight wire. I don't know much much effect i has to use this antenna vs. using no antenna at all (or 17cm whip), but it "feels" better to use something instead of nothing:-)

My old Raspberry Pi B

Aluminum heaters bought here http://www.dx.com/p/aluminum-heat-sink-for-raspberry-pi-silver-3pcs-336768#.VNzwgC7uQYI. Glued on with steel epoxy glue.

I rarely use it so will probably sell it soon.

Wireless temperature thermometer WS590H range fix

Had a problem with a wireless temperature kit.

Bought on Clas Ohlson Art nr.: 36-1795
Type WS590H

The range was very poor and I had a hard time just to pair the transmitter and receiver, even when having them side by side. When paired it usually worked but when the batteries needed replacing it was the same problem again...

Remote with EV1527 chip

Bought on ebay as "315MHz 433MHz DC12V 2 Channel RF Wireless Remote Control Learning Code EV1527". I got the 433 version.

Silvan Chip EV1527
http://aitendo3.sakura.ne.jp/aitendo_data/product_img/wireless/315MHz-2012/RX315-HT48R/EV1527.pdf

Is powered by 12V battery type 27A.