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A digital reflective sensor to consider for the baseboard idea is the Hamamatsu S6986 from active-robots.com and other suppliers. This has an output which modulates the light from any red or infra red LED and is very resistant to false triggering by ambient lighting. They are quite expensive at...

Technical, the 14M2 surface mount version is marked "out of stock". When can I place an order?

I was expecting all Picaxe 18M2 pins (ignoring serial in and serial out) to be in the high impedance state during programme download. Pins B.3 and B.6 (the PWM pins) are grounded during download. Does anyone know why?

I have become increasingly disappointed with the negative and condescending tone of replies from some forum members in response to requests for basic information and/or help with programming from schoolchildren and beginners. Can we lay down some ground rules here. I'll start the ball rolling...

I am trying to design a piece of kit for my students to use when programming Picaxes for solderless breadboard use. It comprises: a 3xAA cell supply; zero insertion force (ZIF) sockets for 8-pin, 18-pin, 28-pin and 40-pin Picaxes; a stereo jack socket with the download resisitors; a 4k7 pullup...

I have a steering servo salvaged from a radio controlled car. It has 6 wires, 3 more than a conventional servo. Can anyone tell me what the extra wires are for?