Waveshare RP2350 e-paper board debuts

A tiny e-paper dev board is only interesting if it removes real project friction. This one mostly does. Waveshare has started selling the RP2350-ePaper-1.54, a compact board that combines Raspberry Pi’s RP2350 microcontroller with a 1.54-inch e-paper panel, battery support, storage, a real-time clock, and a temperature-and-humidity sensor. That matters because low-power display projects usually turn into a parts-integration chore before they become a product. ### What actually launched? Waveshare’s new board is the RP2350-ePaper-1.54, with a touch and a non-touch variant. The core is the RP2350A — the same microcontroller family behind Raspberry Pi Pico 2 boards — paired with a 200 × 200 reflective e-paper screen. Waveshare lists the board at $15.99 to $20.99 depending on version, with optional bundled 3.7 V lithium battery support built into some SKUs. ### Why pair RP2350 with e-paper? Because the whole point of e-paper is to show information without burning power continuously. A normal LCD needs constant refreshing and backlighting. E-paper doesn’t. It is readable in ambient light, holds an image with very little power draw, and fits jobs like badges, shelf labels, field loggers, simple dashboards, and portable status displays. Waveshare is clearly aiming this at exactly that class of project. ### What’s on the board besides the screen? This is the part that makes it more than “a Pico plus a display.” Waveshare says the board includes 16 MB of flash, an RTC chip, an SHTC3 temperature and humidity sensor, a TF card slot, a low-power audio codec circuit, lithium battery charge and discharge management, and expansion interfaces including USB, UART, I2C, and GPIO. Basically, a bunch of the boring support hardware is already done for you. ### Why does that matter to makers? Because most prototypes die in wiring hell, not in software. If you want a battery-powered environmental display, a portable notifier, or a small off-grid control panel, you normally have to stack a microcontroller, a display driver, a sensor board, a clock, power management, and maybe storage. Here, Waveshare has collapsed that into one board. That cuts assembly time, reduces failure points, and makes enclosure design much easier. ### Is the RP2350 a good fit? Yes — especially for embedded experiments. The RP2350A supports dual-core operation and a dual-architecture design, with support for either Arm Cortex-M33 or Hazard3 RISC-V cores, plus up to 150 MHz clocks, 520 KB of SRAM, and 12 programmable I/O state machines. That gives developers a lot of flexibility for custom peripherals, sensor timing, and weird little embedded tricks without needing a Linux-class board. ### What are the tradeoffs? The display is small, monochrome, and slow by normal-screen standards. Waveshare lists a full refresh time of 2 seconds and partial refresh at 0.3 seconds. So this is not for animation, rich UI, or anything touchscreen-heavy even on the touch model. It is for information that changes occasionally — names, readings, alerts, menus, schedules, labels. Think “persistent status,” not “interactive gadget.” ### Why now? This fits a broader pattern. Since Raspberry Pi introduced the RP2350 generation, board vendors have been racing to wrap it in more specialized hardware — displays, radios, sensors, matrices, and compact form factors. Waveshare already has several RP2350 boards, and this e-paper model pushes the lineup toward ultra-low-power and portable use instead of general-purpose tinkering. ### Bottom line? The clever part is not the processor or the screen by itself. It is the integration. Waveshare took a class of project that usually starts as a pile of modules and turned it into one board you can actually prototype with fast. For hobbyists, that means less soldering. For product teams, it means a quicker way to test whether a battery-powered e-paper device is worth building at all.