We designed this board for a project we did with the FAO (Food and Agriculture Organization) in Senegal (Espion means spy in French). The design is geared towards data collection. It has four sensor ports with large terminals. It has a built-in display that allows users to easily view sensor values. It has a recharging circuit for the four AA batteries it uses. The recharging energy can be sourced from an AC adapter or a solar panel.

Current Version:

• Espion 1.2

Specifications & features:

1. 20 MHz PIC 16F877 microcontroller.
2. Four sensor inputs (10 bits resolution).
3. Connection to a computer via the serial port.
4. Reset button.
5. Power source: 4xAA Batteries or AC adapter (9-15V).
6. Built-in display with menu control buttons.
7. 32K EEPROM memory for data logging.

General Information:

• Espion's simple scripting language for data logging purposes.

Technical Information:

• Photo - Large (1024x768), small (640x480)
• PCB design - PDF, Gerber
• Schematic - PDF
• Design source - gogo16_protel.zip (requires Protel99se)

Firmware

• Latest is espion11.ms2 (July 10, 2002)
• Download firmware HEX file - espion11ms2.HEX

PC Software Download

Please see the Download section