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I have a 08M2 low power battery-powered app that regularly naps with the normal "setfreq k31/nap 5/setfreq m32" combination. It has "disablebod" at the start, so it runs with no brown out detection at all times. Sometimes the batteries go very flat and need changing. I have an eeprom...

One of for collective... I have a batch (>1000 :)) of white LEDs from a reputable manufacturer and reputable supplier. Each LED in isolation is qualitatively "white" but with say 20 all powered up and compared to each other they are a different white - some are warmer (yellower - lower degrees...

Bit out of practice with PICAXE :( Trying for minimum power consumption in a small 08M2 project, but not getting what I wanted, so reduced to a minimum... 3.1v supply - 3x fairly flat AA cells Leg 1 - V+ Leg 2 - Earth Leg 3 - Earth Leg 4 - Earth Leg 5 - Earth Leg 6 - Earth Leg 7 - open circuit...

..reasonable torque - enough to turn a benchtop milling machine X-axis lead screw (not ball screw) via direct drive (but can have gears internal I suppose) - maybe 1 lbft at a guess, or 14Kgcm/~1.4Nm in new money ..with a PWM controller to get the required rpm's - home made (PICAXE based of...

Was all working fine, in use in its intended application, then on the next power up (no software changes made) I get some vertical lines on both rows, with different intensity "pixels" on them If i have characters to display in those positions I seem to get "additive" results on the matching...

From EXAMPLE1.BAS progarm for GPS010/UBLOX6 GPS unit... ; $GPGLL,4916.45114,N,12311.12437,W,225444.00,A,A*xx ; `--' `---' | `---' `---' |`-----' -- \ ; #w1 #w2 w3 #w4 #w5 w6 w7-w13 #w14 w15 serin [2000,mainloop], B.6, T4800, ( "$GPGLL," ), #w1,#w2,w3, #w4,#w5,w6...

Stumbled upon this earlier, part way down on the right hand side of http://sim.okawa-denshi.jp/en/PWMtool.php There's some other good ones at http://sim.okawa-denshi.jp/en/ (cue monster thread with other peoples' favourite online calculators for all sorts of obscure and non-PICAXE related...

I've just been making some boards up with my favourite SM regulator (LM2575-5.0), circuit exactly as data sheet(*), and the power supply works fine. At low currents the power supply components are silent - at higher currents (220mA or so, so well inside specs) the wire wound inductors start to...

...for the first post on the new forum :D

More of a note to the search engine in case anybody else has this problem.... Spent 3 hours cursing at my scope / M41T81S RTC / AXE401 shield base trying get i2c comms going :( In exasperation did a final RTFM of axe401.pdf.... H4 *must* be disconnected to remove the LED from the circuit when...

As some of you know, my next favourite chip to AVRs and PICAXEs is the MAX7219. I needed 3 more last week so rather than pay close on GBP33 for 3 from Farnell, who can resist a bargain 5 for GBP5.49 and free delivery from the Far East via the great auction site? Did they arrive. Yes Do they...

I want to make a cheap and tacky one-off device (PICAXE-based) to measure fan rpm - yes, it's a fan on a car, about 15" diameter, 13 blades (who designs a fan with 13 blades?), 200 to 4000 rpm...and no it doesn't have a speed directly proportional to engine rpm. So I'm looking at (IR?)...

Time to start a thread on the next new command :D Manual 2 says that the DAC output must be buffered for reliable use (and shows a voltage follower opamp circuit that's bound to prompt a few questions - what's the cap for, what value is it, what's an op-amp, what op-amp should I use, why isn't...

The result depends on SETFREQ - doesn't seem to be stated in the manual? The higher the frequency, the higher the touch reading (understandable). Possibly a gotcha in waiting when you've calibrated your touch sensor and then decide you might as well wind up the SETFREQ to get max speed - your...

...with minimum value 3R, maximum value 160R? Need to find the resistance and then (the easy bit, suggestions not needed) either an equation or look up table to get to the right units. One for the PBTWA (PICAXE Brains Trust - Worldwide and Aussies)...

#picaxe 20x2 #no_data #no_table #terminal 76800 setfreq m64 do pause 100 sertxd ("U") loop..produces no output in the Terminal window, but perfect output into Bray's Terminal. Works fine in both with:#picaxe 20x2 #no_data #no_table #terminal 38400 setfreq m32 do pause 100 sertxd...

Arbitrary Frequency Generator (was SFO) Anyone got any real code/want to take the challenge of writing real code for the following pseudo code? Would be the basis of a nice piece of test equipment... - autosweeping within limits - set the frequency via serin - set the frequency by a pot on an...

Just checking...for the first time ever, I'm going to run a 3v3 (throughout) system. 1. According to http://www.picaxeforum.co.uk/showthread.php?t=8609, I can run a 5v 20X2 at 3v3? 2. I can use an AXE027 and the normal download circuit to program? 3. Sertxd commands will result in successful...

My latest headache which I have simplified right down to show the problem Hardware is an SPI device connected to HSPI SDO(MOSI), SDI(MISO) and SCK(CLK), with its Slave Select on pin B.7, plus a DS1307 SQW output at 1Hz attached in the HINT1 pin The following code sends data to an SPI device...

I want to run the interrupt code once on each falling edge on the hint1/pinB.1/leg 22 of a 28X2... ..so set up and enable hint1 on falling edge using hintsetup... ..and set hint1 to call an interrupt routine on hint1 occurring Input to hint1 is the SQW output of a DS1307 - verified on scope to...