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I want to recreate the circuit board below, but I am having a hard time figuring out what components I need. I have been trying to look them up on mouser but I haven't got any results.

It is called the NERS V2, the board uses a PWM signal from a remote control (RC) receiver to open or close a circuit. 1-2ms pulses at 50hz, where pulses > 1.5ms turns it on, and <1.5ms turns it off

Does anyone know what these parts could be?

Heres the board, all components are on one side.

enter image description here enter image description here

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  • \$\begingroup\$ Sounds like a smoother, comparator, and SSR. \$\endgroup\$ – Ignacio Vazquez-Abrams Nov 14 '13 at 2:50
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    \$\begingroup\$ One down, two to go. \$\endgroup\$ – Ignacio Vazquez-Abrams Nov 14 '13 at 3:02
  • \$\begingroup\$ I have the device on me right now. \$\endgroup\$ – AFerrara Nov 14 '13 at 3:04
  • \$\begingroup\$ Can you create a schematic of the device, as well as collect voltages relative to ground from various points while the device is in operation? \$\endgroup\$ – Ignacio Vazquez-Abrams Nov 14 '13 at 3:13
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    \$\begingroup\$ It's possible (though very unlikely) that one of those 5/6 pin devices is one of the really, really tiny PIC MCUs. \$\endgroup\$ – Connor Wolf Nov 14 '13 at 12:04
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The LPSL is the 5v regulator LP2985-50 that allows the circuit to work at a better voltage range then the PERS (Another version of the receiver switch that the manufacturer offers) 2-6v range.

The MN9 X1 is a N Channel Mosfet similar to Diodes Inc DMN2041L-7. The X1 is a Year/Month Code.

The 00J1 is most likely a Microchip PIC10F200 microcontroller, based on the number code 00J1 (00 is product, as in F200, J1 is a tracing code, like lot/bin/manufacturing number). 256 word code size, 16bytes ram, 4 I/O (1 input only) with 1 8-bit timer. The voltage range of 2~6v of the NERS is close to the 2~5.5v of the PIC10F200. Also, the pinout as you have shown, is very much the same, with pin 2 being ground and pin 5 being V+.

The code emulates a servo control circuit. It monitors pin 1 for a pulse between 1ms and 2ms every 20ms (50hz), then toggles pin 3 based on what it receives (Anything longer than 1.54ms switches it to On, anything less than 1.46ms switches it to Off). Pin 4 and pin 2 can be used for features, like the reverse output, and safety operation.

That's all it does. You could do the same with any microcontroller. This site has three versions using the same basic idea (Pic10f2xx reading signals, mosfet or direct gpio out)

This is a similar project, using a pic12f, with schematic and code.

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  • \$\begingroup\$ So what about the 00J1? \$\endgroup\$ – AFerrara Nov 15 '13 at 0:00
  • \$\begingroup\$ @AFerrara Not sure. Just wanted to add what we had. As conner had speculated in the comments that it could be a microcontroller, because considering the chip has three inputs and one output, with pulse counting. It's almost like the way a servo controller works. \$\endgroup\$ – Passerby Nov 15 '13 at 4:12
  • \$\begingroup\$ @AFerrara updated. \$\endgroup\$ – Passerby Nov 15 '13 at 4:43

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