PIR Motion Detector Alarm Board
Features:
9-12VDC supply input
ATmega88 (8k ROM)
2 alarm outputs (switch 12V at 1A)
Sensitive PIR input
Light level input
On-board LED
2x3 programming header
Serial I/O
3 spare I/O lines
The CGALARM1 is a super sensitive PIR (Passive InfraRed) people or animal detector. The microcontroller is an ATmega88 with default firmware in it, but if you wish, the "Arduino" development environment (or any other AVR compiler) can be used to make your own custom code.
Default firmware for the board will flash the on-board LED a few times on power up. The board will wait after power up for 30 seconds before registering motion as an alarm. When motion is detected, the J5 output blips on/off with the motion. The J4 output latches on for 10 seconds. After the alarm happens, the default firmware keeps J4 off for a full minute.
From the firmware perspective light level (LDR input on PC1) and motion (PIR input on PC0) are read as analog values. J4 output is on PD3, J5 output is on PD2, and the on-board LED is controlled through PD7.
9-12VDC operates this board. On J3 the left (square) connection is positive, the right (round) connection is power supply ground. For alarm outputs J4 and J5 the left (square) connection is again positive, and the right (round) is ground.
J7, J8, and J9 are spare connections to PC2, PC3, and PC4 respectively. On J7, J8, and J9 the lower pin is ground (blue in pic below), the center is the PCx connection, and the top pin is 5V. For J6 the top connection is serial Tx ("TTL" level), middle is ground, bottom is Rx.
Below you can see the sensors (PIR above LDR) on the face of the board. The board should be mounted in this vertical orientation.
In this picture the dome covers up the two light sensors.
The component side of the CGALARM1:
Connector/header layout for the board.
Location of power and alarm contacts.
http://www.circuitgizmos.com/products/cgalarm1/cgalarm1.shtml
CircuitGizmos Color Maximite
CircuitGizmos is offering the CGCOLORMAX1, the CG version of the Colour Maximite designed by Geoff Graham. The CGCOLORMAX1 is surface mount and completely assembled.
This version of the design includes all of the new features of the Colour Maximite, plus a couple of additional features. The CGCOLORMAX1 has a populated RS485 and dual RS232 circuit that the end user can wire as needed. The board also features a prototyping area where additional circuits can be mounted. Board size is 5.7" by 4.0".
The front edge has provision for a full-size SD card. Back of board has keyboard connector, Maximite expansion header (2x13), color VGA, USB, and DC input.
Inside is a populated RTC circuit, the populated serial circuits that I mentioned, and room for an Arduino shield.
Also on the board is a prototyping area - a sea of holes - for user circuits. That was a late-minute addition to the layout, but one that is very useful. You can add your interface circuits to the board itself, without having to wire up a board to plug into the Maximite connector. (Assuming your circuit fits in that approximately 6 square inch space.)
It is designed to fit into an XR-46 Polycase. The case will also be for sale at CG.
The CGCOLORMAX1 includes the features of the Colour Maximite:
The Color Maximite is a small and versatile computer running a powerful BASIC interpreter with 128K of working memory.
It will work with a standard VGA monitor and generate eight colours (black, red, green, blue, cyan, yellow, purple and white). The Color Maximite is the latest member of the Maximite family and brings new features including color, stereo music synthesiser, Arduino compatible I/O connector and a battery backed clock.
It also has all the features of the original (monochrome) Maximite including input from a standard PC compatible keyboard or USB, built in SD memory card, BASIC language and rear panel I/O connector with an additional 20 I/O pins.
Download of Beginning Maximite with the CGCOLORMAX1: Beginning Maximite
Download of Maximite Integrated Development Environment: MMIDE
