💬 MultiRF MultiVoltage ProtoBox

[openhardware.io]

https://www.openhardware.io/view/422/MultiRF-MultiVoltage-ProtoBox

[NeverDie]

Would you please provide a link to the PIR lens that you're using?

[Koresh]

@NeverDie No problem
http://en.nysenba.com/index.php/page-7-26.html - summary.

[NeverDie]

@Koresh said in MultiRF MultiVoltage ProtoBox:

@NeverDie No problem
http://en.nysenba.com/index.php/page-7-26.html - summary.

Where do you buy them from?

[Koresh]

@NeverDie I bought this lens in the radio shop next street It is very difficult to buy something in my country so I hope it will be not so hard to find such lens in China.

[MiKa]

Could cyou please share BOM?

[Koresh]

@MiKa oh.. pdf doesn't have some component names, sorry. I will try to share bom today. And of course I will update schematic after I test the board if needed.

[NeverDie]

@Koresh said in MultiRF MultiVoltage ProtoBox:

@NeverDie I bought this lens in the radio shop next street It is very difficult to buy something in my country so I hope it will be not so hard to find such lens in China.

OK, thanks for the answer. If anyone reading this finds it, please post where you found it.

[Terrence]

@NeverDie why are you asking? Does this lens seem better than the one you are currently working with?

[NeverDie]

@Terrence
Just scoping out alternatives in case it's ever needed.

[Koresh]

I am not sure this board is useful, but it works properly

[Koresh]

This board fits the box good

[gohan]

may I ask how did you solder all the small SMD parts?

[NeverDie]

@Koresh

Nice work! It looks like a commercial product.

What about the antenna?

[MiKa]

And which battery? Small 250 mAh Li-ion?

[gohan]

@NeverDie said in MultiRF MultiVoltage ProtoBox:

What about the antenna?

Maybe this could fit

https://www.aliexpress.com/item/10Pcs-433MHz-Helical-Antenna-2-5dBi-32mm-for-Remote-Contorl/32608690665.html

[Koresh]

@NeverDie said in MultiRF MultiVoltage ProtoBox:

Nice work! It looks like a commercial product.

Thanks a lot for your high appraisal of this device. I designed this board just for fun but now I really like it with this enclosure. I would plan to improove this board a little (omit unnecessary functions and add useful features) and to start production of this device.

@NeverDie said in MultiRF MultiVoltage ProtoBox:

What about the antenna?

I use very simple solution for all my boards. I just solder wire and fix it with glue pen to the board to improve reliability. Not very ideal for 433MHz board (~20cm) but perfect for 868MHz (~10cm). By the way I tested different modules with Yury (433/866). we found 868Mhz optimal frequency. Excellent range (up to 10x compareble to NRF) and very good feedthrough. So may be it is the most optimal rf solution.

@MiKa said in MultiRF MultiVoltage ProtoBox:

And which battery? Small 250 mAh Li-ion?

May be. With usb and onboard charger of course

@gohan said in MultiRF MultiVoltage ProtoBox:

may I ask how did you solder all the small SMD parts?

I soldered all of my prototypes by hand. I use simple soldering gun and flux. All boards batches are assembled on the factory of course (manually or automatic, depends on the batch size).

@gohan said in MultiRF MultiVoltage ProtoBox:

Maybe this could fit
https://www.aliexpress.com/item/10Pcs-433MHz-Helical-Antenna-2-5dBi-32mm-for-Remote-Contorl/32608690665.html

I really do not recommend to use springs like this. It is not antenna it is... mechanical spring. I tried to use many of them and all of them are much worse compareble with single wire antenna. It has very bad characteristic. I verified it in modeling software and in real life.

[NeverDie]

@Koresh said in MultiRF MultiVoltage ProtoBox:

I use very simple solution for all my boards. I just solder wire and fix it with glue pen to the board to improve reliability.

Do you have a photo of this?

[Koresh]

@NeverDie I will make a photo on Monday.

[Koresh]

@NeverDie Sorry for delay... This is example (improved version with 3d printed fixer)