Naroch specializes in product designs for start-ups and small businesses. Over the years we have done over 150 circuit board designs

We provide the capabilities to design equipment that operates at room temperature, or that needs to survive in extreme environments such as industrial applications that need to withstand ambient temperature variation from -40°C to +85°C.

To give you an idea of what Naroch is capable of, here is a list of a few of the projects we have undertaken.

Some Recent Projects

Obsolete Component and Board Replacement

Reproduced a network card from 1991 and delivered 20 replacements.

Reverse-engineered a 6805-based control card from 1989 and produced manufacturing documentation to build more.

Small Low-Cost Microcontrols

Used a microphone to listen for a specific tone, amplifying the few milivolts out of the microphone, digitized the signal, and used a 64-tap FIR filter for Digital Signal Processing.

If the tone was detected, we had to pulse a laser at 110Hz while still running the FIR filter. There was also a simple user interface with two buttons and two LEDs. The unit would also wake up every few minutes and chirp and audible alarm if the battery voltage was too low.

Whereas some companies would want to do this in a single-board-computer running Linux, Naroch fit all of this into only 800 bytes of code running on a one-dollar microcontroller.

Yes! We do Analog!

Whether you're dealing with hundred of volts or millionths of amps, we can do that.

- Current meter, 40 picoAmp full scale into a 16 bit Analog-to-Digital converter gave 62.5 FemtoAmps per LSB. Through careful layout, shielding, and clean manufacturing, Naroch was able to obtain a signal-to-noise ratio so good that you could see the quantization noise of the A-to-D.

- Measured power provided by a 600Volt 200A electrical service, reporting out via Ethernet or ModBus.

Some Older Projects

Wireless Sensor Nets

Naroch was asked to build an energy efficient wireless sensor network capable of supporting up to 2000 nodes.

This design called for low-energy wireless sensors to communicate ambient readings to a Gateway which, through a Raspberry Pi, processes the data and sends it to the cloud via the cellular LTE network. Wireless routers can be added to extend sensor range as needed.

Casino Counter

The client was a dealer in a casino who wanted a device to help keep track of the state of the game and the current payout amount for a fast-paced complicated card game. By having the machine keep score, no-one could accuse the dealer of getting it wrong. Naroch designed the product with a large easily-readable colour screen, a numeric keypad for reliable entry of numbers, WiFi connection to the casino's local area network, a rechargeable Lithium-Ion battery recharging from USB, and a real-time clock to keep track of time and date.

Wireless Chemical Sensor

One of our customers wanted a device that would be able to detect the concentration of specific chemicals and measure temperature using a wirelessely connected sensor. Our customer further wanted this device to use minimal energy, as it needed to run for 6 months from a pair of AA batteries. Naroch designed this wireless sensor for our client that would transmit the relevant information to the cloud where it could be seen remotely by the end user. This entailed designing the sensor itself, connecting it to the internet, and using databasing technologies to store this information (historical and current) for reference of the end user. Lastly, Naroch developed a web-interface for the client to see the prototype in action.