Infra Red Monitor

APPLICATION OPERATION
The application of IR monitor is to check an IR
emitting device such as a TV Video remote controller.
This IR monitor requires only 7 resistors, 4 LED s, 1
miniature switch, 1 IR photo transistor and 1
PIC12C671 uC.
This circuit uses an analog converter from PIC12C671

to measure the infra-red intensity from the IR photo transistor.

The intensity is displayed on the bargraph
LEDs.
OPERATION
1. Put an emitting device in front of the IR monitor
(from 1 inch to 2 feet).
2. Press the switch on the IR monitor once to
wake-up the micro-controller.
3. Press one key on the TV video controller and
watch the 4 monitor LEDs. The LEDs blink if
data is received, if all 4 LEDs stay off, no IR is
sensing. If high IR power is received, more
LEDs will be on. If IR monitor didn't receive anything
for 17 seconds, it will turn off (sleep mode).
Note: The OPTIC IR photo-transistor must be protected
from daylight source to avoid false bargraph level.

BUGSY -mobile robot with obstacle detection whiskers

Six-Legged mobile robot with obstacle detection whiskers and
Video Capture Camera

Functions: Moves around in all direction, changes paths when
whiskers are bumped with obstacles.. Can walk in tripod, wave,
and ripple gaits.. Can simulate cradle, swing motion, dizzy,
push- ups and even dance around- according to predefined program
script..

Parts used:
Electronics- 2 SSC's, Hobbico Servo motors,
Mechanical- locally fabricated materials.

Outdoor robot

Built mostly with recycling parts. Driven by 2 car wiper motors on about 17 Volts. Direction change
by a third wiper motor in the middle to change the angle of the two halves of the chassis; it works
with a steel rope that is wrapped around the motors shaft, can just be activated while driving
because of self-destruction risks.
The wheels are from a lawn mower. The rear wheels were fixed on a tilteable axe and fixed on spring
resorts.
Power supply by two 12V lead rechargeables batteries in series (7 Ah each).
A main PWM-circuit stabilizes the motor voltage two around 17 Volts.
Controlled by an 8052AH-BASIC-Evaluation board from Elektor magazine. Most other circuits self
developed and built, 2 kits assembled. Can receive commands by a TV IR-remote control, an RC5-code
receiver is used.
2 Bumpers with microswitches on the front end, two on the rear and two in the middle for the
direction motor.
2 IR-Diodes on the front an one IR-modulated receiver (38 kHz). Ultrasonic obstacle detection on the
rear.
It got some obstacle detecting and avoiding routines, but had lots of problems with his own weight.
The remote control was quite unuseable when the sun was shining.

Email: gklares@ara.lu