Category Archives: Blackboard

Blackboard cofounder Michael Chasen takes CEO reins at PrecisionHawk

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PrecisionHawk helps drones navigate only where it is safe and legal to fly. Commercial drone tech venture PrecisionHawk has a new CEO—again. Red Hat Inc. cofounder Bob Young, who has served as PrecisionHawk’s CEO since July 2015, is handing over the reigns to another veteran of enterprise software, Michael Chasen, a cofounder and former CEO of education tech giant Blackboard Inc. Verizon Ventures, an investment arm of TechCrunch’s parent company… Read More Continue reading Blackboard cofounder Michael Chasen takes CEO reins at PrecisionHawk→

Homebrew Multimode Digital Voice Modem

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There’s an old saying that the nice thing about standards is there are so many of them. For digital voice modes, hams have choices of D-Star, DMR, System Fusion, and others. An open source project, the Multimode Digital Voice Modem (MMDVM), allows you to use multiple modes with one set of hardware.

There are some kits available, but [flo_0_] couldn’t wait for his order to arrive. So he built his own version without using a PCB. Since it is a relatively complex circuit for perf board, [flo_0_] used Blackboard to plan the build before heating up a soldering iron. You …read more

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