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I’d love some help interfacing a 16-bit ADC (AD7706) with a 28x2 (3v) picaxe using SPI comms protocol if possible? My ultimate goal is to use this ADC to read the S+ and S- output from a set of electronic bathroom scales. I realise there are more elegant ADC's for weigh scales, e.g. the TI1231...

Dear friends I'm trying to implement a HTU21D temperature + humidity sensor on a Picaxe 18m2. This sensor by MEAS is a very tiny, but apparently very high spec'd (14-bit temperature and 12-bit humidity resolution) sensor at a very reasonable price (i.e. <$15 ea). The Datasheet for this sensor...

As part of my steep (but fun!) learning curve into electronics, I've tried to implement Westies 3x7 segment LED tutorial using a 4-digit 7-segment LED, but it's not working. The LEDS are flashing 3-digits at once and sometimes 4. The characters being flashed are mostly not numbers, just C's, P's...