ESP32-WROVER-DevKit-Lipo Open Source Hardware board with 4MB Flash and 8MB PSRAM is in stock


ESP32-WROVER-DevKit-LiPo is new open source hardware board which uses ESP32-WROVER modules with 4MB Flash and 8MB PSRAM.  It keeps same layout as ESP32-DevKit-C and ESP32-DevKit-Lipo, so boards made for these modules will work drop in.

The only difference between ESP32-WROOM and ESP32-WROVER modules beside the more RAM is that WROVER module has no GPIO16 and GPIO17 which are used internally and not connected to the outside pins.

New ESP32 Development board in stock ESP32-DevKit-Lipo target handheld applications with build in LiPo charger


ESP32-DevKit-Lipo is pin to pin compatible with Espressif ESP32-CoreBoard (ESP32-DevKitC) board, but adds additional LiPo charger and battery connector, allowing board to work from LiPo battery when external power supply is missing.

Tomorrow 16.10 at SofUnitConf in Paradise Center in Sofia we will have Workshop with this board to show how easily it could be programmed with JavaScript and Espruino.

New product in stock: 7000 mAh LiPo battery with JST connector


BATTERY-LiPo7000mAh is re-chargable Lithium Polymer battery with over voltage and under voltage protection circuit and JST connector for all our OLinuXino, OLIMEXINO, PINGUINO, Duinomite boards.

This battery when attached to OLinuXino OSHW computers will allow them to run without external power supply for all day long. Normally OLinuXino consumption is between 0.2 and 0.5A depend on workload this means with this battery fully charged they will work between 14-35 hours stand alone.

Note that these LiPo batteries are considered dangerous for transportation and we can ship them only with ground service like DPD, UPS Standard, TNT Economy, which limits the shipping options to just EU.

More LiPo battery models in stock 110mAh, 250mAh, 800mAh


For a while we were out of stock of our popular 1400mAh and 6600mAh LiPo batteries, but now they are back in stock.

We also have 4 new models:

110mAh with dimensions 30x17x3mm:


250mAh with dimensions: 27x21x5 mm:


800mAh with dimensions: 50x30x5 mm:


and 18650 type LiPo 2200mAh from the type used to build Laptop battery packs:



LiPo shipment problems with Airmail



Ourr Aimail post service is delivered by DHL Global Mail. Yesterday we got notice that their scanner detected batteries in one of the shipment and they stop and return in back.

We have heard that some carrier refuse to deliver LiPo batteries are they are classified as dangerous goods, indeed LiPo batteries could cause fire if punched, LiPo are excluded as goods for DHL normal service too.

So far the road services like DPD and UPS Standard do not cause problems to ship batteries, but now we try to figure out how to exclude DHL and Airmail shipping as options when batteries are put in the basket for ordering. Until we come with solution we will just manually stop such orders, so please do not order batteries with DHL or Airmail unless you want your order to be put on hold.


New Products in stock: Lithium Polymer batteries: 3000mAh, 4400mAh, 6600mAh



We got in stock three new types of Lithium Polymer batteries: 3000mAh, 4400mAh and 6600mAh, all they are 3.7V and compatible with all our boards with LiPo chargers like: OLinuXino A13, A20, Olimexino-328, Olimexino-STM32, Pinguino etc.

6600mAh is real monster and can backup as UPS A13-OLinuXino to work without external voltage for 20 hours under full load.

The products are available in our web shop in Power supply category:

All battery packs have protection circuit for over-voltage and short-circuit.

A13-OLinuXino REV.B works fine from LiPo battery


At first we couldn’t decide if we should make A13-OLinuXino to work from Li-Po battery,  this seemed to be just increase of the BOM and price, so we made REV.A without this feature.

Later though we decided that this is nice feature and we re-considered and included this feature in Rev.B

Now A13-OLinuXino Rev.B is assembling and we got some of the first boards to test with LiPo battery, the result is A13-OLinuXino now may run from single LiPo and support USB devices too thanks to the included boost DCDC.


Some current measurements were taken while board was powered with 3.7V standard 1400mAh LiPo battery we have.

Without LCD the board running Android consumes between 200 and 550mA depend on the different activities, when LCD is add the consumption rise with 450mA due to the backlight.

When the board is in power safe mode the consumption drops to 3mA.

So the A13 while running at 1Ghz takes just 2W power