Mukunda | May 5, 2018

Alexander | Oct. 25, 2017

Great product, helpful guy. JUST BE GENTLE

For Creltek Limit Sensor 343RT

Let me say I love these little censors. They work awesome and help maintain repeatable accuracy. I ordered 3 sensors with wires and the breakout board. Installation was a snap and kept everything very clean.

The only bad thing I have to say about these is the crimps on the boards. I've never been a fan of the through insulation style crimps. They have a probability of not making good contact. As was the case with one of mine. When I went to remove the top portion to reseat the wires, the whole dang thing came off the board pulling the trace along with it. So, get em, remove some insulation so you know you are getting a good contact and be very very gentle if you have to take the wires off.

Response from Kevin H. Patterson | Oct. 25, 2017

Alexander reached out to me regarding the broken connector. This is only the second reported incident of this happening, and I treat it as a defect. I provided a replacement sensor at no extra charge. :) But yes, be gentle if you need to "uncrimp" one of the connectors for some reason.

Larry | Jan. 3, 2017

Robust. Took 12 volts overvoltage without damage.

For Creltek Limit Sensor 343RT

As per the documentation, I built a buffer circuit. Need to drain 22ma from the input of my CNC breakout board's input circuit.

My buffer had a wiring error, powering the Limit Sensor with 12v instead of 5v. I grew suspicious when after a few minutes I noticed the Limit Sensor was running hot.

Later, when the problem was fixed, the sensor is undamaged and runs cool when on 5v.

Response from Kevin H. Patterson | Oct. 25, 2017

Glad to hear the sensor survived unharmed. :) I try to over-engineer things a bit, so they should be fairly robust. While the sensors are designed to sink at least 10mA, it is worth noting that the Creltek RJ-11 Sensor Breakout board v2.1 can sink over 200mA on each of its 8 outputs. Or you can build or own buffer circuit if you need to switch even heavier loads. :)

Larry | Dec. 18, 2016

Have not tried them out yet, but they are nice and compact.

For Creltek Limit Sensor 343RT

The only issue I have with them is their limited output.

I am building a CNC controller/driver. And the opto inputs to my CNC breakout board (designed to run off of 12 volts) impose too great a load for these tiny sensors. They can only handle a maximum current sink of about 12 mA. And my BB's (CNC Breakout-Board's) inputs will source a total of 24 mA. (The BB has a LED in parallel with the opto, thus doubling the current. But even if it did not, I do not like to run electronics right at the limit of it's design.)

I will need to build a buffer circuit for each one.

Response from Kevin H. Patterson | Oct. 25, 2017

As a result of Larry's input and communication with other customers, I have designed an updated RJ-11 Sensor Breakout board that offers much greater current sinking capability, as well as the ability to interface with motion controllers using higher voltage levels in their sensor inputs. More details can be found on the Creltek RJ-11 Sensor Breakout board page, as well as my response to Larry's later review above. :)

Lawrie | April 22, 2016

Yet to install but pleased with what I have seen

For Creltek Limit Sensor 343RT

Happy Yet to install but pleased with what I have seen.........................................................................................................................................................

Response from Kevin H. Patterson | April 22, 2016

Awesome! Let me know how it goes...