zondag 4 april 2021

QIACHIP 433Mhz Wireless Receiver Transmitter Remote Control -1-

Experimenting with 433MHz remote control can easy done with these small modules.

QIACHIP 433Mhz Wireless Receiver Transmitter Remote Control Learning Code 1527 Decoder Module 4 CH output Learning Button

QIACHIP 433Mhz Wireless Receiver Transmitter Remote Control Learning Code 1527 Decoder Module 4 CH output Learning Button

I ordered a package with
Receiver module (RX480E-4) * 10pcs
Transmitting module(TX118SA-4) * 10pcs
My order did not include the antenna's. This was also mentioned in the description, in the description where instructions how to make your own small antenna.
However i decided to also order some antenna's (5 transmit and 5 receive).

This is the product description of both modules

Brand Name: QIACHIP
Use: Universal,Lighting,Electric Door,Automated curtains,Switch
Wireless Communication: RF
Channel: 4
Package: No
Frequency: 433 MHz
Model Number:
TX118SA + RX480E 433Mhz Universal Remote Control For Smart Home Garage
Product Description
Pin Description:
- : Negative power supply
+: Positive power supply, DC 3-24V
K1: 1 short to Negative start transmitting data, Similar the A button on the remote control.
K2: 2 short to Negative start transmitting data, Similar the B button on the remote control.
K3: 3 short to Negative start transmitting data, Similar the C button on the remote control.
K4: 4 short to Negative start transmitting data, Similar the D button on the remote control.
ANT: transmitting antenna

[Receiver module ] Product Model: RX480-4ch
Model: KSL-RX480-4ch
Working voltage: DC2.5V-5V
Working current:3MA
The sensitivity: -108DBM
rate: MAX 10KB/S
Working mode:Point move, self-locking, interlocking
The output: 4 channel CMOS level signal Corresponding to the remote control ABCD 4 buttons.
Pin Description:
GND : ground or negative pole
+V : DC3.3~5V input
D0: Data output
D1: Data output
D2: Data output
D3: Data output
VT: Output (When any pin of D0-D3 outputs the level signal, VT is output synchronously; VT is usually used as the output indicator.)

Applications (mentioned in the description)
1.wireless power switch, socket, remote control switch, receiver module,
2. access control, electric cars, motorcycles, automobile anti-theft products, remote door openers, closers control system
3. security, surveillance systems, home security products, electric doors, alarm host, alarm
4. rooms controls, shutter doors, windows, remote control socket, remote control LED, remote audio remote control electric doors, garage door remote control, remote control retractable doors, remote rolling gates, sliding door
5. smart home products, remote control curtains, remote MP3,

The first i build was a small transmitter module (using the transmitter module, a small 4 button pcb ans a battery holder.
Next i wired a receiver module up on a small veroboard with some leds resistors, a battery holder, an on off switch for the small battery. For the connection to the module i used dupont connectors so i can easy change the module. I also included the status led and a programming push button. These two items are also available on the pcb module itself so they are not really needed.
Later i also created a second transmitter module on a verboard with some big buttons

I hope to find soon more time for my next post with more info about this interesting and easy to use modules.

zaterdag 3 april 2021

Pogo pin dupont - adaptor

Also i sometimes want temporary connections for testing or transferring data. Therefore i ordered some pogo pins The pogo pins or spring-loaded pins where ordered relative cheap (e.g. on AliExpress) as a set of 100 pieces.

I also often use dupont connectors in my projects. So i made a simple dupont - pogopin adapter.
For the dupont side i used the crimp wire connector.
I soldered some pogo pins in some female dupont crimp wire contacts.
The i used pliers to close the crimp contacts.
Finally i did put it in the Dupont housing.
Currently i only made this cheap 1x 3 pin housing and 2x 1 pin housing connectors. See photo's.


4 Button PCB

Some time ago i received this nice PCBs with 4 push buttons in my Aliexpress mailbag.
The PCBs and buttons are somewhat smaller than expected. (About 32mm*8 mm)  
However they are relative cheap. For 10 PCBs with 4 buttons i did
 pay € 3,41 including shipment, so about 34 cent each.
One side of each button is connected to a separate pin marked K1, K2, K3 and K4. The connections on the other side of the button are joined together and is marked GND 

To 4 of these PCBs i soldered Dupont header to easy use them for prototyping.
The two on the right in the picture have straight male headers and can be easy plugged in a breadboard.
The bottom left has a 5 pin female header. The top on the left has 5 bend male header pins. The idea is that i can easy use the PCB with buttons one on the left with some Dupont wires.