mBarograph
is a full electric digital barograph measuring, recording and analysing the atmospheric pressure.
Functional description
The mBarograph full electric digital barograph measures the atmospheric pressure and records them. The records can be visualised in a 24 hour graph or alternative in a 4 day graph. The 4 day are 3 day plus the current day. The atmospheric pressure values are recorded and displayed every 5 minute for the 24 hour graph and displayed every 20 minute for the 4 day graph.
Pressure change from now to 1, 5, 10, 15, 30 minute, 1 and 3 hour ago are calculated and visualised. Based on the pressure change from 15, 30 minute and 1 hour ago the pressure tendency over 3 hour is estimated. If any of these and or the effective 3 hour pressure tendency is above or below the preset tendency limit an alarm bar appears on the screen and an acoustic alarm is sounded. In the alarm bar the estimated tendency values are visualised.
The device includes a high accuracy real time clock. Visualisation is done on a high-contrast sunlight readable 4.2 inch e-paper screen and the device can be powered by standard USB Type-C cable. It has an internal Li-Polymer Battery which allows the mBarograph to work without an external power supply for about 10 day.
The firmware can be updated by the user using a personal computer.
Technical data
| Operating pressure range | 900 to 1100hPa |
| Absolute accuracy pressure | ±0.50hPa |
| Relative accuracy pressure | ±0.03hPa |
| Offset temperature coefficient | ±0.6hPa/K |
| Temperature stability pressure | ±0.16hPa within 1 year |
| Altitude correction range | 0 to 50m |
| Active viewing area on display panel | 85 x 64 mm |
| Graphic resolution of display | 400 x 300 pixel |
| Timescale | 24 hours or 4 days |
| Pressure viewing range | 22hPa over 24 hours |
| 220hPa over 4 days | |
| Resolution of pressure value | 0.1hPa |
| Resolution of pressure curve | 0.1hPa per pixel 24 hours |
| 1.0hPa per pixel 4 days |
24 hour graph screen with triggered alarm
24 hour graph screen
4 day graph screen
Operation Manual & Firmware & Acquisition
Operation Manual
Below the Operation Manual can be downloaded. This allows to study in depth all the functionality and how the mBarograph operates.
Download Operation Manual
Firmware
The current mBarograph firmware version is v0.05. The user can update the firmware using a personal computer. All files and a short instruction is included in the zip-archive.
Currently no new version is available.
Acquisition
Currently the mBarograph cannot be acquired. It is planned that the mBarograph can be acquired in 2026. To be kept updated write an email to below email adress.
mBarograph@icloud.com
Frequently Asked Questions
Below you can find the most frequent question asked by users of the mBarograph. In case you run into any trouble, the best thing to do is to start here to check for an answer and solution.
Where and mostly when can a mBarograph be bought?
It is planned the mBarograph to be put on the marked early 2026. Check back regularly!
Since the mBarograph is delivered without, do the USB charger and cable have any special requirements?
The charger should deliver at least 2A of current and the USB Type C cable should be of data transfer quality. So the USB Type C cable can also be used to update the firmware of the mBarograph.
How to get in touch in case of questions and inquiry?
For any inquiry or question, you can write to mBarograph@icloud.com