G+_Daniel Stagner Posted August 17, 2018 Share Posted August 17, 2018 I wanted to share my progress on the LiPi project. It required a few extra parts. I am using a small 12v step down converter and the TP4056 that Father recommended. I am also using a 3.7 to 5v converter to run the Pi. I have uploaded a few photos and I am putting the finishing touches in the sketch up file. Once done I will upload the file here for anyone who is interested. Enjoy. Link to comment Share on other sites More sharing options...
G+_Black Merc Posted August 17, 2018 Share Posted August 17, 2018 Request function of completed project. Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted August 17, 2018 Share Posted August 17, 2018 Is Fr. Robert Ballecer, SJ still posting projects? I am curious what maker things he is up to. Link to comment Share on other sites More sharing options...
G+_Tim Nelms Posted August 17, 2018 Share Posted August 17, 2018 VERY interested in the sketch-up file. Thanks for posting this! Link to comment Share on other sites More sharing options...
G+_Michael Wild Posted August 17, 2018 Share Posted August 17, 2018 very cool, what are the specs on the battery? Link to comment Share on other sites More sharing options...
G+_Dan Baldwin Posted August 17, 2018 Share Posted August 17, 2018 Glad to see this project continuing, keep us updated! Link to comment Share on other sites More sharing options...
G+_Daniel Stagner Posted August 18, 2018 Author Share Posted August 18, 2018 Black Merc It basically houses and powers a RasPi 2, 3, or 3 plus and picam using 3 18650 batteries. The batteries charge when connected to 12v power. I got the batteries on eBay and they are labeled with 5800 mah. The 3 LCD displays from left to right are the voltages from the input end of the tp4605, The battery leads of the tb4605 and the voltage of the output of the boost converter to the RasPi. I set it up to be modular so other power line parts can be easily adapted to other more efficient parts in the future without changing the box. I have been using it for 24 hours now and it has not burst into flams;). The voltage of the batteries drops slowly under load even if connected to a 12v power supply. I am not sure if it is the tiny MP1584EN or just a limitation of the TP4056. I ordered some other battery tenders from China over a month ago but I have not received them yet. There is a hole for a momentary switch. But I just send the shutdown command via ssh and did not install it. Until the extra parts get in from China I will be working on a single battery setup for a RasPi zero W. Parts used are listed below. -DC power jack https://www.banggood.com/1Pc-DC-Power-Jack-Socket-Power-Outlet-Power-Socket-Female-Panel-Mount-Connector-p-1177643.html?rmmds=myorder&cur_warehouse=CN -20 Gauge Silicone JST SM Connectors Plug, https://www.amazon.com/gp/product/B074J5498N/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 -20 Gauge Silicone Wire and JST Connector https://www.amazon.com/gp/product/B071XN7C43/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1 -LCD 3 Wire 0.36" DC 0~30V Digital Voltmeter Gauge https://www.amazon.com/gp/product/B00YALV0NG/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 -MP1584EN DC-DC Buck Converter Adjustable Power Step Down https://www.amazon.com/gp/product/B01MQGMOKI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 -XL6009 Boost Module DC-DC https://www.amazon.com/gp/product/B07BNHR4HW/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 -TP4056 https://www.amazon.com/gp/product/B06XCXPY86/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 -Battery Tray https://www.amazon.com/gp/product/B01M7WDLLW/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 -8650 batteries ebay.com - Details about 10pcs SKYWOLFEYE 18650 Battery 5800mah 3.7v Li-ion Rechargeable Batteries Cell Link to comment Share on other sites More sharing options...
G+_Daniel Stagner Posted August 18, 2018 Author Share Posted August 18, 2018 Here is a link to the stl file. drive.google.com - Pi Case Working.stl Link to comment Share on other sites More sharing options...
G+_Daniel Stagner Posted August 18, 2018 Author Share Posted August 18, 2018 And here is a link to the skp file. drive.google.com - Pi Case.skp Link to comment Share on other sites More sharing options...
G+_Cesar Jimenez Lithgow Posted August 23, 2018 Share Posted August 23, 2018 I have built the Lipi per padres instruction using a pi 3, after encountering the low power booting problem added a DC Boost Converter 2A power supply my pi is not reliable it reboots at random what model converter di you use? How did you solve the inconsistent power supply of the step-up converter? What are your thoughts? Link to comment Share on other sites More sharing options...
G+_Daniel Stagner Posted August 24, 2018 Author Share Posted August 24, 2018 Cesar Jimenez Lithgow I am using the below boost module. There is an adjustment dial on it that needed to be set. It took close to 12 full rotations to get the output voltage down to 5v from around 24v. I ordered five and went through three before I realized just how much adjustment it was going to take to dial down the voltage. I think your problem may be with your TP4056. I found that more then one of the TP4056's that I have did not function as the manufacture intended. They output inconsistent voltage until I realized that they were just draining the batteries down to dangerously low levels. Even when they were being fed 5v power. I also do not think any of them are charging at the full amp they are rated to charge at. -XL6009 Boost Module DC-DC amazon.com - Robot Check Link to comment Share on other sites More sharing options...
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