
Holt Scientific is currently offering an educational chemical sensor kit for sale. The kit is capable of supporting any standard 6-pin sensor configuration (LPG, CO, ozone, carbon dioxide). The PCB has a built in comparator circuit which drives a piezo-buzzer and LEDs during an alarm state. A standard 8-pin microcontroller can also be used to interface the sensor. The PCBs small footprint allows easy integration into a hand-held or wall mounted instrument. Please contact us for more information on this kit (chris@holtscientific.com).
This is a screen shot of the CAD program used to layout the electronic components on a PCB for a sensor application. The typical lead-time from design to delivered PCB Board is 3-4 weeks.
Final PCB with components
Holt Scientific provides quick turnaround instrumentation and circuit design services.
We specialize in sensor prototype instrumentation for universities, businesses and inventors.
Recent Projects:
Educational chemical sensor kit
Turbine engine pallet safety sensor
Optical Deflection Sensor
High temperature carbon monoxide detector hard-ware and PCB design
Microcontroller based bench-top portable dual gas sensor and fuel cell test instrumentation with LCD readout
Hand held (field portable) optical sensor for measuring beetle bioluminescence intensity
Analog light to audible tone generator for examining infra-red to UV spectrum and PCB design
We provide the following services:
PCB CAD
Analog circuit design
Firmware programming
Holt Scientific will not consider deferred payment or a share of potential profits in client's invention or project.
This is a battery operated motion detector. This project needed a fresnel lensing system with an integrated microcontroller to log detection events.