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Hi code below, no hystesis. Using ADC to detect voltage between 0 and 5 with 10K in series on C0 to + and the photo transistor between C0 and 0V. The sensor is outside but under cover and looks down so no direct sunlight, which a previous Australian forum member explained eats LDRs in his...

Hello I have a simple outside light switching system on an 18M2. Previously I used LDR's for day night sensing. 6 months ago the LDR failed so I directly replaced it with a Vishay TEPT 4400 all worked well until this last week when the system stopped switching on at night. I replaced the...

Thank you, makes a lot of sense.

I have a simple IR receiver that operates output c.2. The circuit below works to either toggle or flash an output depending on which button is pressed. The response to "0" is always the flashing routine that is correct, and only "0" operates this routine. "96" should toggle the output which it...

Thank you for your time. I can play with this to meet my requirment.

Thank you Ibenson and PhilHornby. Both correct motor interferance causing the problem, fitted an X2 filter across the open/close contacts and reliability has returned. I had two parts of the program operating "safety_out" B.4, this blip made me think it was the program. Thanks for the prompt...

I use Picaxe 18 project boards so all built in, I also fit an extra 0.1 cap across the PIC power pins as well. The relays are the transistorised Ebay type. If you can't see a problem in the program then I will rewrite it without the loops and see how that goes. Thank you

Hello I have a simple program on a Pic 18m2 that operates an electric door. The program works correctly, except it does not always start instantly when the input is applied, rather it waits for it to be applied then removed. The trigger is from a keypad which is about 3 seconds. Entering the...

Thank you

Thank you. Have that working with the full program as you say. I did try just sending EEprom data but it all went dark! Could someone elaborate on the controls, as for the LCD I read that you can make it go printer left or right, tried it with the OLED and gobdly goop went left or right and...

I would like to use some of the 16 OLED on board EEPROM slots. Do I have to send the full AXE133 program each time with the slots ammended or is there an abreviated way to just change the 16 slots EEPROM slots, or some of them. The OLED datasheet and the Picaxe manual are rather scant in their...

Thank you for the replies. The reason for using an OLED is the alarm will be attended by people who will not have knowledge of the system but can then contact someone who does, so the whole display will have a better description, it will not be "alarm 1". What I needed was help with how to...

Hello I am making an alarm control panel with a 20m2 that will have 4 alarm inputs, some outputs and the alarms displayed on a Picaxe 16 x 2 OLED display. Getting the display to work correctly from the 20m2 is OK but... How to display more than 1 alarm in a cyclic style is my question. If...

Excellent! I have tried it in my main program and all is good. Just what I need, neat, easy to adjust and short. I can change it for my uses. Toggle is a new command to me. Thank you.

Happy Christmas to you all. Is there a smarter or easier, way to program the following: I want to have a slow flashing LED but the input needs to provide a fast response prefferably without using interrupt. The only way I can do this is to break the pause time into multiple smaller pauses...

It was running too fast, thanks

I have lost the yellow bar that follows the lines of code when you simulate in PE6. It must be simple to get back but I can't find it. Thank you to Picaxe store, ordered bits Friday pm and they arrived in the post Saturday morning. Also now I can unplug and plug back in my 027 cable and it...

Hello I have an 18 standard project board working as an external alarm control panel, with four infra-red beams connected to it and some LED's and a light switching relay. Day mode is fine, when you break a beam you get the corresponding LED change and the internal buzzer Night time operation...

Hello I need some programming tips on how to do this: I have a pulsing input (that will gradually build up and down between 0 and 4 Hz ) it will need to pulse an output at the same frequency until the input goes above a certain frequency (say 2 Hz )when I would like the output to remain...

With an Axe 027 trying to program an 18 standard board the cursor keeps moving to the right on my screen, pull it left it goes to the right on its own. Tried two different leads three different com ports. Restarted the PC several times. Left it for ten minutes and everything was fine, board...