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In “VHP: Vibrotactile Haptics Platform for On-body Applications”, presented at ACM UIST 2021, we develop a low-power miniature electronics board that can drive up to 12 independent channels of haptic signals with arbitrary waveforms. The VHP electronics board can be battery-powered, and integrated into wearable devices and small gadgets. It allows all-day wear, has low latency, battery life between 3 and 25 hours, and can run 12 actuators simultaneously. We show that VHP can be used in bracelet, sleeve, and phone-case form factors. The bracelet was programmed with an audio-to-tactile interface to aid lipreading and remained functional when worn for multiple months by developers. To facilitate greater progress in the field of wearable multi-channel haptics with the necessary tools for their design, implementation, and experimentation, we are releasing the hardware design and software for the VHP system via GitHub.