Recent content by rolf_w

in the download section a version "V1.A-20180514" of the JBDTools is available. I wonder if this is the latest version? It looks the same as the version V1.8-20170822 displayed here. These versions amongst other things allow to select the language. Unfortunately part of the english text in the...

As far as I know this board is manufactured by Shenzhen Jiayuda/Jiaxa Technology Co., Ltd. (http://www.jiabaida.com , JBD, e.g. downloads http://www.jiabaida.com/home-1.7-info-id-104-catId-52.html). It seems to be the latest version (v1.4) of the SP- series, which all use the above TI chip. Thus...

The TI documentation for the bq769x0 Battery Monitor Family e.g. http://www.ti.com/lit/gpn/bq76920 explains it in tables 8-1 to 8-3. This BMS carries two bq76940 thus allows for 2x15 cells to connect. For a 22s arrangement you need to short 8 cell inputs - you have several possibilities to do...

The manual which came with the JBDTools 1.1 reads: Balance: turn on balance function. Chg balance: turn on the balance function during charge. If disabel Chg balance, then static balance, eg: the difference of battery more then 0.4V, then balance work. Enable is charge balance. Disable is...

Trains in our steep mountain slopes use the motors as generators to de-accelerate. The generated el. current is fed via the overhead line to the train on the other side of the mountain to do the climb (see). r

I recently received a first generation mini-e from a friend. It doesn't have the on/off wiring and I'd like to know, where I could tweak the system to include such an on/off (kill) switch. I searched for a while and it seems the only option is to splice it in the 'red' wire which feeds the...

It shouldn't be too difficult to combine the data arriving from 2 Neptune's on the same smart phone display !? I'd love to see such a feature (just software changes required, I guess)

Can anyone explain what "...channel B, outputted to the contact pad..." exactly mean? what and where are the "contact pads"? I would like to connect a second, external battery back and hope "channel B" might be useful !? r

If pin VBAT4 does not have >6.5V the OZ890 will not start! r

I am not aware of any chip revisions made and the valid tech reference still is the "08/03/2009 OZ890 - DataSheet - V1.6": OZ890 has embedded O2micro “Balance on Demand (BOD)” technology which starts up bleeding when the following conditions are all satisfied: Battery pack is in charge state...

see here (excerpts from the OZ890 datasheet...)

it's all non English, though: Art. 18 Motorfahrräder

thx, I'll study the details... the new FoundingPower CS-BMS (and EBS-BMS) only cut off the charging current and the auxiliary supply current (lights, CA, ...) - the main discharge current via the controller is cut off via a throttle limiter signal (pull down throttle signal either 'binary' or...

I'd like to use a CAv3 to set up 3 modes on my newest e-bike built in accordance with the 2012 Swiss regulations: e-Velo: 0.5kW max. motor power, up to 20km/h 'motor only mode' allowed, up to 25km/h only 'motor assist mode' allowed, above 25km/h pedal only (no motor allowed) e-Bike: 1.0kW max...

That's exactly the point! Discussing renewable energy efficiencies should cover the entire conversion chain and will finally lead to discussions about requirements of non-renewable resources such as land and metals. Here we compare the conversion of solar photons to chemical forms of energy...