is it possible to make a voltage/ amp tester with two of the four A/D converter pins?
and use part of the optuput pins on the B port to switch the voltage and amp tester between different circuits. this would help me in a project tremendously.
Anyone got an answer with the parts necessary to make the pin's like switches?
voltage range to be measured 0.1V to 19.5 V on one tester on the other .1 to 5.0 V if it goes any higher I got a problem matter of fact if it goes above 4.1 V it needs to be turned off period. if the individual measurements 4 of them go below 3.2 V it also needs to kill the circuit.
and if the ampage which will have to be measured through some sort of part goes above 3 Amps on one side or above 1 amp on the other side A circuit needs to be killed too. further more if the current flow on one side goes below a certain point or doesn't go below a certain point after a certain voltage requirement has been forfilled and time has past a circuit has to be killed.
there are only three circuits that have to be switched on off ergo killed or started etc. but there are about seven points that will have to be switched to for measurements since I have 8 B port output pins I could use a combination of three for the kill/start (kill would be on!) switches and combination of three pins for the switching between measurements and then just check the voltage and current in differnet cycles of the same circuit selection state.
is this all doable?
Can I measure current and how what external cheap parts do I need?
and what external chaep part do I need to measure voltage of this range considering the pin can only handle somewhere around 4 to 5 volts and very little current. well these are my needs and this is the pic I have handy. and this project has already bankrupted me
some hints would be appriciated.
terramir
and use part of the optuput pins on the B port to switch the voltage and amp tester between different circuits. this would help me in a project tremendously.
Anyone got an answer with the parts necessary to make the pin's like switches?
voltage range to be measured 0.1V to 19.5 V on one tester on the other .1 to 5.0 V if it goes any higher I got a problem matter of fact if it goes above 4.1 V it needs to be turned off period. if the individual measurements 4 of them go below 3.2 V it also needs to kill the circuit.
and if the ampage which will have to be measured through some sort of part goes above 3 Amps on one side or above 1 amp on the other side A circuit needs to be killed too. further more if the current flow on one side goes below a certain point or doesn't go below a certain point after a certain voltage requirement has been forfilled and time has past a circuit has to be killed.
there are only three circuits that have to be switched on off ergo killed or started etc. but there are about seven points that will have to be switched to for measurements since I have 8 B port output pins I could use a combination of three for the kill/start (kill would be on!) switches and combination of three pins for the switching between measurements and then just check the voltage and current in differnet cycles of the same circuit selection state.
is this all doable?
Can I measure current and how what external cheap parts do I need?
and what external chaep part do I need to measure voltage of this range considering the pin can only handle somewhere around 4 to 5 volts and very little current. well these are my needs and this is the pic I have handy. and this project has already bankrupted me
some hints would be appriciated.
terramir