When projects are realised, the result is very often interesting pieces of equipment which can be very useful for further projects. Here are a few examples which we offer for general sale.

• Temperature and Humidity Sensor MJB.A.000042

  This small module (25mm x 25mm) was developed for accurate and stable temperature and air humidity measurements. It uses a digital temperature sensor (DS1621), an EEPROM for calibration parameters and an oscillator based on a high quality capacitive humidity sensor ( HC104-K50). A control microprocessor circuit supplies the 5V power and reads the measurement values over a 6 pin connector.
  The temperature is read via an I2C bus. The humidity is calculated by counting the digital pulses from the oscillator during a fixed period. The corresponding relative humidity value is read from a lookup table in the EEPROM via the I2C bus. Every module has its own offset value (saved in the EEPROM) and can also be calibrated across the complete humidity range if required.
  
  

• Real Time Clock module for the Grafikkit EA KIT240-7* - MJB.A.000024

  The RTC module - MJB-A.000024 - for the Grafikkit EA KIT240-7* (touchscreen) incorporates a real time clock with battery as well as 56 bytes of memory. The module is useful when the time and date is required and for saving information such as operating hours, which the inbuilt battery maintains for over 6 months without external power.
  The battery is trickle-charged during normal operation.
  
  

• ModemBox Version 2.00 - MJB.E.000004

  The ModemBox is used to test analogue modems used for radio data transmission. It supports several standard FSK and FFSK modems and it is possible to add further types by updating its DSP software.
  The ModemBox supports stand-along operation or computer control and has a built in BERT (Bit Error Rate Test).