PICAXE IR Recive circuit - its changed?

[radiogareth]

Just browsing this command and I noticed that the 330R resistor that used to appear in the +ve supply to the IR module has been deleted. It was there when I designed the PCB last summer. Can anyone 'officially' confirm its OK to run without (data sheet on IR RX does not show it) before I commit to making some pcbs?

Thanks

Gareth

 

[g6ejd]

I recommend you decide what you need and calculate the values of any current limiting resistors, if that's what you need. So you need to know the source and the load, do have details?

 

[Hemi345]

I would go by whatever the datasheet says for your particular IR sensor. Vishay TSOP4038 recommends atleast 100ohm on the V+