Begin with what the exhibit does
The playback device is the part of an exhibit that visitors never see and staff worry about most. The choice depends on the work it must do. Looping a video file is a light task. Running an interactive touch application with animation, sound and a database is heavier. Rendering real-time 3D is heavier still. Decide what the content needs first, then choose the smallest reliable device that does it with some margin to spare.
Margin matters because exhibits run for long hours, often every day for years. A device that is only just fast enough may struggle when content grows or when software updates add load.
Dedicated players and general computers
Dedicated media players are small devices designed to play video, images and audio from storage, often on a schedule. They tend to start automatically, have few moving parts and are simple to manage. Their limits are in interactivity: many handle basic touch triggers or simple inputs, but not custom applications.
Small form-factor computers run ordinary operating systems and can host interactive software. They offer flexibility but also more to maintain: updates, drivers, security settings and background services that might interrupt a show.
Single-board computers are inexpensive and compact, and they suit light tasks and prototypes. Their storage cards can wear out under constant writing, and power supplies and cooling deserve attention. They can serve well in a permanent installation if treated carefully.
Full desktop-class machines are needed for demanding real-time graphics. They draw more power, create more heat and take more space, which affects the enclosure and ventilation.
A useful rule is to avoid more complexity than the exhibit needs. A video loop on a full computer with automatic updates has many more ways to fail than the same loop on a simple player.
What makes a device suit long running use
- Cooling. Fans collect dust and fail. Fanless designs avoid that problem, though they rely on the case to shed heat, so they need airflow around them. Heat trapped in a closed plinth is a common cause of crashes.
- Storage. Solid-state storage has no moving parts, but heavy writing can wear it. Keep logs small, avoid unnecessary writing, and use storage rated for continuous operation where possible.
- Automatic recovery. The device should power on by itself after a power cut, launch the exhibit software without anyone logging in, and return to a working state unattended. Test this by pulling the plug and watching what happens.
- Ports and outputs. Check that the output type, resolution and refresh rate match your display, and that the sound output suits your speakers. Adapters and long cables are frequent weak points.
- Support period. Look at how long the manufacturer is likely to supply the same model and provide security updates. This relates directly to preventing technology obsolescence.
- Power consumption. Lower draw means less heat and a smaller power supply, which also supports environmental goals.
Software setup
Hardware reliability is only half the story. Configure the system so that nothing interrupts the show:
- disable pop-up notifications and update prompts
- run updates on a schedule you control, not when the system decides
- start the exhibit software automatically in full-screen mode
- set the system to restart the software if it closes unexpectedly
- keep a locked-down user account with no access to other programs
Where internet connection is needed for content or reporting, consider what happens when it drops. Many exhibits are better built to work from local files and treat the network as optional. That principle is also relevant for offline mode design, and the wiring side is covered by exhibit networks.
Plan for failure
Any device will eventually fail. Reducing the cost of failure is part of choosing hardware:
- Spares. Keep at least one tested spare of each model, already configured, if the budget allows. For a small collection of identical exhibits, one spare may cover several.
- Disk images. Keep a complete copy of the working setup so that a replacement can be made quickly. Staff should know where it is and how to restore it.
- Standardization. Using the same hardware across several exhibits simplifies stocking spares and training. Many small museums find this more valuable than getting the ideal device for each exhibit.
- Access. Mount the device where staff can reach it without removing the screen. A player that needs half a plinth dismantled for every restart will not be restarted promptly.
Remote monitoring and restart routines can reduce visits, but a physical power switch or a clearly labeled reset point remains useful.
Match the budget to the real cost
The purchase price of a device is a small part of its lifetime cost. Staff time for updates, repairs and replacements often adds up to more. An inexpensive consumer device that needs weekly attention may cost more than a pricier unit that is left alone. When preparing an exhibit budget, include spares, support and eventual replacement, and keep a maintenance plan that notes who looks after the device and how often.
Test before installation
Run the complete exhibit on the chosen hardware for several days before it goes into the gallery, in a warm space similar to the plinth interior if possible. Watch for slowdowns, memory use that climbs over time, and failures after restarts. A burn-in test of this sort often catches problems that a short demo hides. Record the device model, software versions and settings, and pass that record on at project handover, so whoever inherits the exhibit does not have to guess.