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I have ordered a 12V (non-solar) motion sensor light. I assume it will draw a nominal current when not sensing motion, and a much greater current when the light goes on. How best do I detect the increase in current with a PICAXE so that I can tell when the light has switched on?

13-in-1 STEM robot kit

Apologies for a long post with only a bit picaxe-related. I don't want to hijack SolarMike's "08M2 PV MPPT Charge Controller", but papaof2's post has me wanting followup: For a number of reasons I feel there's no hope for solar for me in Nova Scotia, but I would like to have backup for oil...

Here is code to run an MQTT node on a PICAXE 20M2, sending the data using an ESP-01 flashed with Annex RDS (https://sites.google.com/site/annexwifi/home). (See post 11 for 14M2 PCB.) '20mqtt #picaxe 20M2 #no_data #terminal 4800 symbol baud=t2400_4 symbol pLED=B.0 symbol action=b4 symbol...

I've run out of 100nF capacitors, but by chance have a stash of small values of which the highest is 68nF. Are they suitable to use where where a 100nF capacitor would have been, adjacent to the picaxe power pins?

Here is a picaxe web server, derived from hippy's code in post #28 in the thread, Where's the Wizard? https://picaxeforum.co.uk/threads/wheres-the-wizard.31896/ and hemi's suggestion of using javascript on a remote web server to actually build the html (on a pi, in this case). Per Electronics...

I have a workspace, named 40x2.wsp, which opens with 7 programs. I delete three of them and open another, and then save the workspace. If I then close PE6 and open that workspace again, the original 7 are still there, and the new one isn't. How do I accomplish what I want--removal of 3...

and the datasheet doesn't help me. Looking at, for instance, the 1N5817, which is rated 20V, 1A: https://www.mouser.com/datasheet/2/389/1n5817-954386.pdf I want to be able to power a dollar store LED light, 3-AAA powered, from 5V from mains or battery sources (18650 holder module), connected...

From Goetex via Erco, this PCB plugs into this CH340 usb serial adapter and programs a picaxe with 3-pin SIL programming socket, using a 74HC14 to invert the signals. https://www.ebay.com/itm/Gold-USB-to-Serial-USB-to-TTL-FT232-Upgrade-Download-CH340G-Adapter-Brush-Board/382788900884 Attached...

Hedingham's dollhouse lighting thread made me wonder about a convenient way to turn on and off lots of 12V lights on a 24-hour timed schedule. I've designed PCBs, had them manufactured, and and have tested a 20M2 design which, with an MCP23017 I2C I/O extender allows control of 29 lights, with...

5 years ago I made a PCB using a 14M2 to provide a serial interface (from another picaxe) to a 2x16 LCD with the Hitachi interface using Hippy's 4-bit code. It worked (and works) fine. I had a use for it with a 4x20 LCD, so I plugged in the board. I thought it wasn't working, but happened to...

I found this i2c mcp23017 i/o expander module on ebay: https://www.ebay.com/itm/MCP23017-I2C-interface-16bit-I-O-Extension-Module-Pin-Board-IIC-to-GIPO-Convert/183487288052 Here it is in action with an 08M2: MCP23017 i2c module Here's the code: '08mcp01723.bas #picaxe 08M2 SYMBOL mcp23017...

I've been looking at a backup water system for my house to provide water from my shallow well in case the electricity goes out. I had been thinking about a 12V pumping system, but then after mulling over how to get the water where I wanted it, it seemed to me easier to just provide backup to the...

It just inadvertently came to my attention that there is a whole new (if small) world of picaxe stuff out there behind the "Blogs" link. I've never looked at it before. Is there a forum setting behind the scenes which would enable new blog posts to appear in the list when the "New Posts" link is...

On a 20x2, I'm trying to roughly replicate the "time" variable usage on the M2 parts (so I can interchange some M2 and X2 code). The following code, should, to my mind, print the count of minutes followed by 60 "."s, but I get only the number "1". It appears that toflag is not being set. What...

I've often used this code to calculate voltage times 10: calibadc b4 b4 = 2611 / b4 ' 1.024 * 255 * 10 / calibADC value: V*10 I have a design which needs to run at 32mHz and 3V to accomodate a Nokia 5110 LCD, but have found that CALIBADC doesn't return the right value for this calculation...

I tried to place an order from Tech Supplies. When I tried to login, I got a message like "email address and password don't match". I requested a password update but never got the email which was supposed to arrive if my email address was on file (not in spam account either). I tried to...

The following code loops every 500ms based on "setfreq M8", "settimer t1s_4" and a check for a change in the value of "timer". The two commands function so that the system variable, "timer" increments every half second. ' 20timertest tests 500ms timing #picaxe 20x2 #terminal 9600 #no_data...

Perhaps this has been noted before, but I missed it. I've been scratching my head as to why the "time" count that I've been using in a program for rough timing is so far off. As it turns out, the counting of "time" is disabled during a READTEMP command (up to 750ms), so if you are doing READTEMP...

The circuit above, with 24VAC fed into an LTV-814 photocoupler, gives me 120 pulses per second. What value smoothing capacitor do I need from the upper end of R13 to 0V in order to read a logic 1 when the AC is on? Are there better values for the resistors?