RobotShop Perimeter Wire Generator and Sensor Soldering Kit
Description
- Signal generator and sensor soldering kit for a perimeter wire
- Detection wave frequency can be varied with the on-board potentiometer
- Can be interfaced with Arduino (0-5V analog output)
- Perfect for DIY lawnmower robots
- Requires soldering
- Perimeter wire is not included
This is a nice soldering kit to build your own signal generator and sensor for an electrical perimeter wire. The generator board is based on the popular NE555 Timer and the sensor board is based on two LC (tank) amplified circuits. Can be used with DIY Robot Lawnmowers. A processing chain (amplification, filters, comparison) makes it possible to determine the position of the robot within to the wire. Note that the perimeter wire is not included, but it comes with the through-hole components.

- 1 x Generator board PCB
- 1 x Sensor board PCB
- 1 x 3.3 KOhms resistor
- 1 x 12 KOhms resistor
- 1 x 47 Ohms resistor
- 1 x 4.7KOhms potentiometer
- 2 x 100nF capacitor
- 1 x 1000pF capacitor
- 1 x 1uF capacitor
- 1 x 2.1x5.5mm barrel connector
- 3 x 2 positions terminal connector
- 1 x NE555P timer
- 4 x 10 KOhms resistor
- 4 x 1 MOhms resistor
- 2 x 22nF capacitor
- 1 x LM324N op-amp
- 2 x 3 positions right angle pin header
- 2 x 1mH inductance
- 1 x 1meter 20AWG cable (for the inductances)
Wish it came assembled. I haven’t got to check it out but. Looks like it will work as long as assembly goes well.
I've bought 4 of these kits. I've soldered them together all per the instructions. The receiver PCB does not work as advertised! I'm getting a steady voltage of 3.8V on the signal lines even with no sender PCB.
Unfortunately the kits I received were not complete. After receiving the replacement kits with the missing components (which were themselves again incomplete but I was only missing one of two capacitors each time so it was ok for me) the sensor wouldn't output any data at all except a steady changing value in the range of 780. Very disappointed. Comment RobotShop: We are very sorry to hear about the defective parts and our team will contact you regarding another kit!
This perimeter generator kit with its 2 sensors is well designed, simple to assemble, the plan provided is brief but sufficient... I tested with a small cable and an Arduino, it works well...now all that remains is to mount it on my robot mower prototype and test with a longer wire. In short, cheap, effective, I recommend!
Super product. Well packaged. Easy to follow assembly guide, when combined with the blog post about the kit. My one complaint is that the output of the sensor is a waveform, not a steady DC level that I was hoping for. In order to use the output of the sensor kit to be read by a controller, such as an Arduino, you need to add one more bit of components. I was able to create a simple RC filter that leveled out the waveform to do what I needed. These two components would have been a lot easier if they were part of the base product. Overall quite pleased. Fast delivery. Quality product.
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