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nRF51422 Power Meter Dev Video

Quick Video showing the basics working. It’s not truly calculating power yet, but that is a minor calculation. I’m mainly debugging and trying to figure out power consumption right now.

Current Measurement

Minor coding changes can have a major effect on current consumption. The above was taken running a while loop to wait for the DRDY line to de-assert itself. Notice the [ … ]

Parts Are Arriving

Prototype parts are starting to show up. The first items are the cranks. Currently the line up include 4 x SRAM Rival GXP 53/39 172.5mm, 1 x S950 50/34 170mm. [ … ]

Testing Results

I have written a couple of partial posts and have chosen against posting them. Upon re-reading I was feeling that I haven’t added any real content – just subjective opinions [ … ]

Timelines

I’ve created a relatively aggressive schedule for myself which should have prototypes for beta testers to use around the end of June or early July. If you look closely to [ … ]

Thermals and Calibration

Toaster oven meet test setups. Test setups, toaster oven. Now that introductions are done, let’s get down to preliminary business. The above picture shows two test crank arms – one [ … ]