Very cheap home made flashlight data logger

CandleEater · Jun 2, 2006

If this is the wrong place to post this please move.

This thing cost me something like 10 bucks to make. It uses an 08m PICAXE.

eric

HarryN · Jun 2, 2006

Hi - That is interesting. Can you post a few more details - I am not sure how you did this and how it interfaces to a computer. Thanks

CandleEater · Jun 2, 2006

The program editer is free and is what I use to interface with the circuit (datalink). Push one button to start taking measurements and the other one is to download the data.

Here is the BASIC code.

Code:

main:
	if pin3 = 1 then rite		'push to start taking readings
	if pin4 = 1 then reed		'push to download 
	goto main
	
rite:
	high 1				'turn on red led
	for b0 = 0 to 199			'the number readings
	readadc 2,b1			'anolog input (0-255)
	write b0,b1				'write to memory
	pause 60000				'pause 1 min
	next b0				
	low 1					'turn off red led
	goto main

reed:						'download
	for b2 = 0 to 199	
	read b2,b3
	sertxd(#b2,44,#b3,13,10)
	pause 15
	next b2
	goto main

CandleEater · Jun 2, 2006

Here is the circuit:

Very cheap home made flashlight data logger

CandleEater

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HarryN

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CandleEater

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