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Intended Use:
Mobile Presentation
ASUS S1 Projector ASUS S1
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Street Price: $239
Weight: 0.8 lbs
Aspect Ratio:16:9
Lens Shift:No
Lamp Life:30,000 Hrs
30,000 (eco)
Connectors:  HDMI (MHL), Audio Out, USB
Video Formats:  480i, 480p, 720p, 1080i, 1080p/60, 1080p/50, 576i, 576p

Pocket Projector Review

Marc Davidson, May 15, 2014

Setting up the Projector

Limited Connectivity. The back panel on the S1 offers only three connectors:

1 HDMI, MHL enabled for easy connection to an MHL-capable phone or tablet.
1 mini-plug audio out
1 USB A (For providing power to a USB device)

Keep in mind that you can connect between the HDMI port and a DisplayPort, Apple Lightning port, or a DVI-I or DVI-D port. If you don't have at least one of these on the image source you want to use, however, you won't be able to connect.

Setting up. Assuming you have an appropriate connector on your image source, setting up the S1 is easy. Plug in the cable, turn the projector on, point it at the screen, and focus. Using the power cord is optional, assuming the S1's battery is charged.

One welcome touch is that the focus ring moves more than is typical with small projectors before you'll see a significant change in focus. That makes it easier than with most models to find the best setting. Another plus is that the two rubber feet--one all the way across the front and one across the back--do a good job of holding the projector in place. Most small projectors pivot away from the screen easily if there's even the slightest tension on the cables.

As with most projectors this size, there's no zoom, so you have to move the S1 to adjust image size. For most of my tests, I used a 52" diagonal image with the projector 45" from the screen.

Note too that the S1's vertical offset lines up the bottom of the image with the center of the lens. That works particularly well if you're using a table-top screen on the same table as the projector. If you need to adjust the image position and don't have a tripod, you'll need to tilt the projector up or down by putting something under its front or back edge. If you do that, however, you won't be able to square off the image, since there's no keystone adjustment.

Previous Page
Viewing Experience
Next Page
Features and Test Results
Review Contents: Viewing Experience Set Up Features and Test Results Conclusion

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Comments (9) Post a Comment
Claude Posted May 29, 2014 2:22 PM PST
I thought LED lighting eliminated the rainbow effect ? Is that not correct ?
Evan Powell, Editor Posted May 29, 2014 2:36 PM PST
Claude, that is not correct. Sometimes it can make it worse. The LED light source functions by alternating red, green, and blue in temporal sequence, just like a color wheel does, and that's what causes the problem.
Wayne Posted Jun 2, 2014 8:46 AM PST
I'm interested in the reviewer's discussion of brightness and the term "moderate ambient light". Does that mean it can be used in hotel hallways outside conference rooms? The lighting in such places is softer than office lighting, but certainly not "theatre dark".

If I'm showing slides on the wall outside the conference room, for people to glance at as they arrive, will they see something useful?

Given the above, I'm disappointed that the projector doesn't have connectivity for USB thumb drives, SD cards or WiFi.

Does anyone have suggestions for a projector that's bright enough and better connected?

Ignacio Posted Jun 6, 2014 9:01 AM PST
I've had a brookstone hdmi projector for 2 years now, it's a great little projector that has served me great but I am looking for an upgrade within the same dimensions. I certainly welcome the added lummens but I wonder if there is a projector this size with 720p resolution? Also can you comment of the fan noise compared to the brookstone?
Tim Thompson Posted Jun 17, 2014 7:50 PM PST
Does it have a fan? How noisy is it?
Dare Posted Oct 14, 2014 10:31 PM PST
The asus S1 has no built-in wireless connectivity however, I saw a video on youtube that demostrated how it can be used with an ASUS wireless dongle plugged into its HDMI port.

Does anyone know which dongles are compartible with it? I'll really like to be able to connect my laptop and phone to it wirelessly for ease.
Greg Green Posted Dec 17, 2014 10:05 AM PST
What resolution do I need? I have the projector and all it is showing is the desktop background. Nothing else shows up.
Samuel Onyiego Bosire. Posted Nov 2, 2015 7:33 AM PST
I bought Asus S1 pocket projector. I connected it to my laptop using the HDMI cable, it doesn't show any picture, just writes NO SIGNAL. What might be the problem?.
Evan Powell, Editor Posted Nov 2, 2015 7:48 AM PST
Samuel, typically it is because your laptop does not automatically output a video signal via HDMI until you tell it to in the display settings.

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