DIY Electronics Message Board

Latching Relay - help me out?

skankinratfink — Tue, 08 Jul 2008 03:36:11 GMT

Hey everyone ... I am doing a custom wiring project in my car. I am using an intermittent button to kick a solenoid in and out. To do this I have been told I need a latching relay.

I've been looking at them online, but it seems hard to find what I need. I need it to be 12V. It seems that most of the latching relays available online remember their position when their power is cut. Simply put, this is NOT what I want- I want the relay to just return to the open position when its power is cut off. (I want it to disengage the solenoid when I turn off the key).

Can anyone direct me to a good source to purchase something like this? Thanks.

Forum: Messages

K149 - PIC12F675 Bandgap erased :(

dickheadz — Sat, 05 Jul 2008 13:47:25 GMT

I'm working with PIC12F675. A few ays ago I changed the 'Bandgap' setting in the FUSE before programming accidentally. After that when I want to erase or reprogram that PIC, i get an error message: "Error writing new bandgap".
Other instance of this type of PIC works correctly.
I use K149 programmer & diypack25ep with MicroBurn - Protocol P18A.

I'he searched on the web, but I could not find any usable things - only that the bandgap is factory programmed & only needed for the ADC on the chip.
Any suggestion?

Forum: PIC Programmers

Temperature Control with the K145

JohnG — Sat, 28 Jun 2008 16:45:11 GMT

Hello all,

For those of you using the K145 "Temperature Data Logger", I've figured out a way to add 2 channels of relay control - on the same serial port. The additional components are mounted on a separate add-on board. The only modification to the K145 is to feed power to the board from an external power source, rather than through the serial port.

There is a circuit diagram and basic software (freeware) on my website. Constructing the add-on board is do-it-yourself, there is no board available at this time. I'm hoping someone else (Kitsrus? Frank?) might want to take on creating and supplying the add-on board.

John
www.108relays.ca

Forum: Messages

pwm @30amps

draper — Sat, 28 Jun 2008 03:26:14 GMT

need to know if there is a pwm kit that can handle 30amps. I will be using it for a HHO generator that runs at about 25 cont. amps. can anyone advise?

Forum: Messages

K141 output power usage

larrymorris — Wed, 25 Jun 2008 16:05:10 GMT

I recently purchased K141 from one of your distributors and had a question about the 12V output of the board. I plan to use K141 to trigger a buzzer when our property gate opens using an NO switch and 12V input to trigger the mode 1 timer. The question is when I hook up the buzzer to the outbound side of the board (to NO and C), I need a power supply for the buzzer and I wanted to know if I could use the 12V supplied on the outbound side of the board ?

Forum: Messages

Kit 166 amperage

veroniqueblade — Tue, 24 Jun 2008 13:30:42 GMT

I bought this kit to run my hydrogen generator and want to know what if anything I can do/buy to upgrade it to run at 25amps continuous?

Forum: Messages

DIYPack problem with unsorted HEX

katmai — Mon, 23 Jun 2008 13:29:11 GMT

I have K150 programmer & Diypack25ep
There is HEX file attached below (just need to change extension) which i can't recognize in micropro burner, but ic-prog can recognize such hex properly
i have been confused & tryed to flash this hex using ic-prog with JDM programmer, & it working good!!!
But most time i can't use ic-prog because i haven't com-port in my notebook. possible to solve this problem with com<->usb converter, but i think much better to use K150
what to do? how to solve this problem with diy-software?

Forum: PIC Programmers

CHIP ID for PIC18F2423

besho741 — Mon, 23 Jun 2008 04:49:34 GMT

please can any one tell me how to add new device PIC18F2423 to chipdata.cid file
i'm still using old version beta26a (working nice with me)
after search in site i got one chipid file contain that pic but with same id of pic18f2420 =1140
could that work fine , I'm not try yet because I didnot recieve that pic yet?
shall i upgrade my programmer to 25ep ,note also that chip not in chipdata.cid of that final pack.

also how to calculate chipid from device id in pic data sheet?

pleaaaaaaaaaaaaaaaaassssssssssssssssseeeeeeeee heeeeeeeelp

besho741@yahoo.com

Forum: PIC Programmers

K150V21 major problems.. HELP

carlbradshaw — Sat, 21 Jun 2008 21:36:04 GMT

I have a k150v21 programmer. It seems that no matter what I try I can not get it to recognize and chip I have tried so far(16F84A,16F873,a few others).
I installed D2XX driver for FT232BM for USB and am using port 4.
5VDC is ok 12VDC is ok. using 16VDC to 18VDC for power. Power indicator led working. Even with all the messages saying it does not recognize the processor, when a program function is executed the green LED indicates activity. So far I have tried DIYPAK22,DIYPAK25,DIYPAK25A and DIYPAK25EP. Still same problems!#@$!@#$!@#$!!!
Please help!!!!!!!

Forum: PIC Programmers

pic16f628 programming

kky — Fri, 20 Jun 2008 14:32:32 GMT

I have a problem with epic programmer for pic 16f84.
How to solve it?

Forum: PIC Programmers

Anyway to program PIC18F1330 in K150???

ivan — Thur, 19 Jun 2008 15:37:16 GMT

Hi everyone!

My name is Ivan and I am working on a project which requires the PIC18F1330.
I bought the programmer K150 and I'm using the DIYPACK25 but the 18f1330 is not in the device list.

Can I add it manually? or is there any other software I can use to program it?

Thank you very much.

Forum: PIC Programmers

Problems with 12 Channel IR Remote W/Relay Board Kit

hubcitykid — Tue, 17 Jun 2008 22:03:30 GMT

I recently purchased and assembled one of your 12 Channel IR Remote W/Relay Board Kits.

I have 30+ years professional experience in the electronics and computers fields. That DOES NOT mean I DIDNT screw up, but just gives an idea of my experience level.

Anyway

I assembled the kit very carefully according to the brief instructions. Being careful to note polarity and pin orientation of the components. I reviewed the same several times during and upon completion of assembly.

My problem is that I get no action or response from the remote control when trying to activate any of the relays. Nothing in either MOM or TOGGLE positions.

Heres what I do know;

Power on LED showing power applied. Dont know how well this powers up, but no relay chatter on initial power up.

Diodes polarity checked.

Resistor array polarity checked. ( DOT on array aligned with SQUARE on board.)

IC pin and socket aligned with silk screening on board.

Capacitor polarity checked.

Power supply is 12 volt DC @ 800 ma. (Actually supplying ~14 Volts DC)

Voltage levels at 5 volt regulator is 5.02.

Voltage is correct at pins on all IC sockets. 74XX chips 5.02 pins 7 and 14. 14 volts on IC1 pin 10 and 20. ULN2003 chips, 14 volts, pins 8 and 9.

Checked with magnification for solder bridges and cold joints. Reheated and/or cleaned 2 or 3.

Removed ALL chips and rechecked for bent pins and socket orientation.

IC1 Observations Using O scope

Pins 4 and 5 on IC1 have clock signal.

Pin 1 on IC1 toggles with reset button.

Pin 6 showing square wave input in response to button press on remote.

Following schematic for control lines for relay #1, and pressing #1 on remote;

Pins 1 and 16 on IC4 show no response.

Pins 5 and 6 on IC2 show no response.

Pin 16 shows no response.

Removed ALL ICs but IC1. Still no response on Pin 16 for relay button 1 pressed on remote.

Any help will be appreciated.

Forum: Messages

A new Discussion Board for Electronics Engineering Students

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Forum: PIC Programmers

A new Discussion Board for Electronics Engineering Students

manu — Tue, 17 Jun 2008 06:28:53 GMT

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Forum: Messages

kit 23 (2 versions?)

robw — Wed, 11 Jun 2008 18:00:20 GMT

Greetings,
I just put together kit 23 opamp function generator. Unlike the picture, my kit did not have a point for common. I tested it by running the signal to the ground battery term and off the various wave pins. I then ran that same signal through a PA system to amplify it. I got no signal.

I also made adjustments to the trimmer, checked the direction of the ic, and of the 4 diodes, and further checked the soldering. Any other ideas?

Forum: Messages